JavaScript进阶 - 第2章 你要懂的规则(JS基础语法)
第2章 你要懂的规则(JS基础语法)
2-1什么是变量
什么是变量? 从字面上看,变量是可变的量;从编程角度讲,变量是用于存储某种/某些数值的存储器。我们可以把变量看做一个盒子,盒子用来存放物品,物品可以是衣服、玩具、水果...等。
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" 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2-2 给变量取个名字(变量命名)
我们为了区分盒子,可以用BOX1,BOX2等名称代表不同盒子,BOX1就是盒子的名字(也就是变量的名字)。
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" 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我们赶快给变量取个好名字吧!变量名字可以任意取,只不过取名字要遵循一些规则:
1.必须以字母、下划线或美元符号开头,后面可以跟字母、下划线、美元符号和数字。如下:
正确:
mysum
_mychar
$numa1
错误:
6num //开头不能用数字
%sum //开头不能用除(_ $)外特殊符号,如(% + /等)
sum+num //开头中间不能使用除(_ $)外特殊符号,如(% + /等)
2.变量名区分大小写,如:A与a是两个不同变量。
3.不允许使用JavaScript关键字和保留字做变量名。
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" alt="" />
任务
在右边编辑器的第7行补充代码,在var 后,填写变量名,如"myname"。
?不会了怎么办
在半角及英文状态下输入变量名
变量名以字母、下划线和$美元符号开头
代码:
变量命名
2-3 确定你的存在(变量声明)
我们要使用盒子装东西,是不是先要找到盒子,那在编程中,这个过程叫声明变量,找盒子的动作,如何表示:
声明变量语法: var 变量名;
var就相当于找盒子的动作,在JavaScript中是关键字(即保留字),这个关键字的作用是声明变量,并为"变量"准备位置(即内存)。
var mynum ; //声明一个变量mynum
当然,我们可以一次找一个盒子,也可以一次找多个盒子,所以Var还可以一次声明多个变量,变量之前用","逗号隔开。
var num1,mun2 ; //声明一个变量num1
注意:变量也可以不声明,直接使用,但为了规范,需要先声明,后使用。
任务
在右边编辑器的第7行声明了一个变量mya,代码程序有问题,我们来修改下:
1使用正确声明语法,将vra修改为var
2.将变量名3mya修改为mya
?不会了怎么办
变量声明使用var
变量名以字母或者下划线或$开头
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>声明变量</title> <script type="text/javascript"> var mya; mya=5; alert("mya的值是:"+mya); </script> </head> <body> </body> </html>
声明变量
2-4 多样化的我(变量赋值)
我们可以把变量看做一个盒子,盒子用来存放物品,那如何在变量中存储内容呢?
我们使用"
=
"
号给变量存储内容,看下面的语句:
var mynum = 5 ; //声明变量mynum并赋值。
这个语句怎么读呢? 给变量mynum赋值,值为5。我们也可以这样写:
var mynum; //声明变量mynum
mynum = 5 ; //给变量mynum赋值
注:这里 "="
号的作用是给变量赋值,不是等于号。
盒子可以装衣服、玩具、水果...等。其实,变量是无所不能的容器,你可以把任何东西存储在变量里,如数值、字符串、布尔值等,例如:
var num1 = 123; // 123是数值
var num2 = "一二三"; //"一二三"是字符串
var num3=true; //布尔值true(真),false(假)
其中,num1变量存储的内容是数值;num2变量存储的内容是字符串,字符串需要用一对引号""
括起来,num3变量存储的内容是布尔值(true、false)。
任务
定义两个变量,并赋值,同时在网页中显示出变量的值。
1.在右边编辑器中第7行,定义num1变量,并赋值数值10。
2.在右边编辑器中第8行,定义num2变量,并赋值内容为字符串"JS"。
?不会了怎么办
定义变量var
变量赋值使用=
号
赋值内容为字符串,一定要记住字符串需要用一对引号""
括起来
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>变量赋值</title> <script language="javascript"> var num1=10; var num2="JS"; document.write("num1的值是:"+num1+"<br>"); document.write("num2的值是:"+num2); </script> </head> <body> </html>
变量赋值
2-5 表达出你的想法(表达式)
表达式与数学中的定义相似,表达式是指具有一定的值、用操作符把常数和变量连接起来的代数式。一个表达式可以包含常数或变量。
我们先看看下面的JavaScript语句:
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" 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生活中“再见”表达方法很多,如:英语(goodbye)、网络语(88)、肢体语(挥挥手)等。在JavaScript表达式无处不在,所以一定要知道可以表达哪些内容,看看下面几种情况:
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e8mP5GMIyAieGMetE+X5ggwl4v5XZTbjflcIRsNtJkCuj1fpWKePHCOzQEM0sc7e321lbbL79Yvv9+1mayGtu0SVVaCt0q8jVrlAUF6i1bDEePWsRi1927fpUq7PWmpJ1NpZAYiiJNJte9e5P/+pdaJJJnZSlyczVbtxpPnrTfuDHz7FnIZkO9tH9DmFCI9vkoHCdNpqDB4JPLvU+eePr7XffuOdrb8V9/tV2+bPr6a8OHH8KTkYrsbGVBgaay0vj55/bWVt/Ll2GPZ5nllBohMTRNOZ3e//3P/O232h07lAUFqtJS/QcfTF286L5/P6DXhwkC2R9ENAxF0QRB4XjQYCBevHB2dlovXRqvrVVv2aLMz1fk5GAbN45//DF+82ZAq11OLyYFQqKDQT+G2a5cGaupgS4dw5Ej09euESMjFI6vlKWuXS6XjbdECWKZYRiGJEPT0z6FwtnVZWlo0O3bpywokGdlYeXlpvp6z8OHoenp5XFqlldINE05HJ7+/sm6OtX69YqcHN2+fdaffyZevKDc7mRnA4RCIZvNRhCEzWZzuVyw0cYhFArN9bOkgB15yunt7ZVIJAs42gJYoktYahaf7cShAwHSZPIMDlouXNBs3w5hwtiBA7YrV4jR0WXw9JZPSAxFBQ0Ge0vL2IEDitxcVUmJ8Ysv3H19IZttYZPBbDabRCKRyWQSiaS3txc2SjhApYn5s6SAHXnKWU4hLdElLDWLz3ayQN+v6+5d48mT2MaNirw8rKxs4sQJZ1dX7PkiwrEsQmKYMEEQw8OmM2fUIpGyuFi3Z4/t8mW/SrWYKQgx75PNZuvo6AAVgUVCQor8bYQUiczOw/QrldPXruk/+AC6IjSVlTaJJGgwLF3gsBxCCrvdnocPx2trlUVFqnXrJj791P3HH5TDsfhZyRKJxGQydXR0yDjrYkdXl5g/S5ze3t7h4eHh4WFubVjmSrkUl7AMLDLbC4ahaQrHvUNDloYG9ebNsnfeUW/ebGtsDBoMSxQyLbGQaJpyuZydnfr334cQ0NLQ4JPJhJoLB5ant7d3XiFF/4yLXq8fHh6e6yywo0wmiy+kUCiEYVh/f39vb29/f79er2f/ZTKZZDIZL05wuVzcjbA72A0Mw0Jvtp3CXkIoFJLJZBiG8X4G+WRPTRAE7NLb2zs0NMSLr2QyGfcaI5GIzWaTyWQEQSSe7SUFhiinr1/XVlUpcnLUFRW2K1fIqamliJeWUkgMQzkcjtu3xw4cUBYVaSorZ5uEJe6XW4Ct4IlkAWchCKKtrU0ikXR0dPT29ra0tEgkkqGhIfivXq/nfgWGhoYkEglUO+7u4Jp2dHSEkimoZC8BTset9LCxra0NPptMJrgK1ieUSCRc5UQ7bODFpVdnJk2H7HZcKtXu2iXLzNRs22ZvaQlNTwveLb5kQqLpkM2G//abtqpKvnq1trra3tpKTk0tw0NmKRESfGXrWSgUAp3AllAo1NLS0tLSwj1CS0sLe1LYna2CILykWvFkLwHDMIlEwjVKLpeL3cJmmDWYBEGAwlntrQwhRSIMTYemp+0tLZpt2+RZWbq9e51dXeGZGWHPsjRCoumQ3W6/cUNbXa3Mz9fu2oVLpSGbbXkGm5dfSFAFeQYnFApxqxroyvRqVROTycTKDHbnOWZtbW0dHR1LdwmQPe4pIIdgBkFmPM8N8szKe6UIKRKJwMumbFeuqDdvlmdljR8/ToyMCDvbdQmERNPk1BQ0AIq8vLEDBxzt7ZTDsWxTNhIUEvQpxSQRU8A9C1QgU9TSP3HE1t/fzxoo2H1oaEjGAVyvJb0Erm8ZiURaWlrY7EHOo31LyZsjDStGSJEIEw4HDQbzt98qCwuVBQWWhobg+LiAdVJoIdE0heO4VKqtqpKvXavbu9fZ0UHh+HLO90lQSDBcCAwNDXV0dLBfeZHDvGeZqwLxctLW1gbiAWvA1lrYPSZLeglgYcCXA2eSvYS5ynDlCikSiTCh0MzTp4YjR+SZmeotW5xdXbTPJ9TBBRZSeGbG1dOj27tXmZ+v27vXeecO5XYv86y55XftYjpCkUiko6ODGxfBz0wmE9RaNvyA7Yusfwu4hAjHgezv72e7GeBrdFcE6L+/vx++rjghRSKR8MwMfvMmtmmTIjvb9PXXQYNBqMoppJAYipp5/txw9Kh8zRrN9u34b79ROL78c9pTFSPxjkAQBC9wYg1Rf38/NziJGWIly8KEBFWf280AgLZ5/iHon20vortP2KHwBV3BskDTAY3GeOqUfO1azfbt7t5eod6DKJyQGIacnDSfPQtTua0XL4ZstuWfwR09syERFt9rB0340NAQO50CzBGvUYfQiFdr2aOxYzgulyt63EbwS4i8UjuUGLe4QqEQBGlsPvV6fUtLC1f/3EuGXkq4tLQWUiQSJghHe7t682ZFXp6loSFoNApyWMGEFJ6Zcd65o6msVOTlTZ4+7Verl3Rq01xwA4wlvaM8IYVCIXawBWhpaYnufoCwJDqOZzuXWdra2hKJcxYPqwfedpfLBVpi6ejo4I4pu1wuUA773+Hh4fQXEkPTPoVi4pNP5FlZYzU13sePBRmSEUhIDOPHMHjN/dj+/Z6HD1P15uDo2d9LRMyZ1DBZAYb85zp7nKnQMLFAJpNFK3DpiB/YxM8SzMZgpzjARO8lLXZBoFyu6atXYTEJ/LffwkI0WMIIiQZzKRIpi4utFy+GpqcFOSxiGeDOZvibwNC0u69Ps327Ii9vNgZZNMIIKWgwTH71lTwra2z/fu+jRylx6hALAPoPoifdvfV4h4Z0+/YpsrMt588L8lo3AYTEhMOehw+1VVWK3FxLQwN6JcmKYGhoCEKapOZPvDV4nzwZ279fkZNjOX9ekBorgJAoh8N2+bKysBDbtMl5506arDOGiA87rTb9Q5qlwPvkydiBA4rsbEtDQ7pYJJ9cbjh2TPbuu4YjR3wyGVq0BJH+vLZIAvlQixUSQ1HOri51RYUiJ8d68SKF44vPEwKx1HifPHkdI6WDkNj3zKlFIte9e6ibAbEieCNGivk2qiRZrJD8GDZx4oQsM9Nw9KgvFU9BIhALwPv4sW7fPkVOjuX779PAIjGMZ3BQW12tyMmxXLgQsloXnyEEYhnwDA5qd+1S5OVN/fSTIPV2UUJiSNLx++9YWRlWVoZLpSv0rUSIvxsMTbt6ejTbtikLCmxXrlAOx+KPuSghUThubWxU5OVpd+50P3iA+utWOn+T5WNpgrC3tqpKS7GyMkdbG53yKULBiQnTN9/I167VHz5MvHix+NwkC9z49J/itVLyucxrjKUGhgkaDKb6ekVOjm73bs/AQOonrfoxbOLTT+WZmcZTpwI63eJzkyzs0wdpPul4ZeUz1blYWuhg0N3Xp62ulmdlGb/4IqDVCnLYRQmJGB01HDkiX7vW9M03wYkJQTKUFCurgq6UfKY6F0sJwwSNRktDA7y9297aGvZ6BTnwooQ08/w5rPxoOX+enJoSJENJIZPJOjo64CGf5T974qyUfL71QqIDAde9e5rKSllm5vjx4z6ZTKgnuBcnpKdPx957T5GTYxGLU9L3DY+FwmI63O0EQcDyvL29veyj0bBuKM8g6PV67gPV7KM1er0edueuPMoCi41Erz/KngIece3t7YWH8+bKJ5fe3t6YzymxxyQIAo45PDzMfZAWssHuG3NVV1halftMEXsJ/f397HZWSCaTCZaMZc8Vs2x5K8KyhQlLxqZkddU4MDQd0Ggm6+oU2dlYWZm9tTXs8Qh1cCGElJ09lSIhxYR9cpNdIpT3Wgruj3ltMOwFT0339vayq59yqwt4aPADOBGrVTjF8PAwPJUNy/okmO25vD44ZnSWYDu7Miv7WHvMVV15yy3AQlxwQNidWxoymYx3LvY4YFTn+i9vd3aZlDSBcrnwX3/FNm2SZ2UZT570Y1i6LMc18+zZ2MGD6SYkeHaau0Qo1LAEhcSbEw11jt0LDtLf38++fAnWZuC++UISa0WheYkvJO4VRS8gDNpml5iMXpYk5jJ67DXyjsw2HHB1Es6SfRiGcS8Nippn0JJdbHl5YEhy5s8/DUeOKHJytFVVru5u2u8X8PiL62wYGdEfOiTPyjKfO5c+jyHB7Yx2kxIXEm8ZEG67C1WH58+wlYm1EgvIdnwhcVt3MAvcLbxVXeFBI7Z+wwonXJm1tbXFrOu8lZMj8y2ezCtS2H05n5NPEFgd0tLQAO9DmfrpJ9JkEnbYc9Hd3598Is/KGv/oI+Kvv5ZhXe9EYN2P4eFh7vohibt2vANyfwPLknCXROWarJiniANvvRQucbId8yzcnPNWAoO1taAoYi6PPFdpxDwXrEsBERR4tjwhJXjtywZDUcGJCWtjI7ZxoyI723Ds2MyzZ4K/yWFRQgrZ7daff1YWFakrKqavXVuKRf4XBrxKBGokW2mEElJMFiYkGKgFJBIJhmHsV+61JCukyJtrU7a1tbH/ip/DeYUErUZbW1t/f79MJgPTl75CYhja7/fJ5dZLl9RbtshWrdJWVTm7uoTq8uayuLl2oZD3yRP9Bx8o8/PHDhxw9fQIsiCLULhcLjb8jSxCSNzlQbivkIgmWSFxie/aJSsk1uEEE8TrDplrMcr4QuItoh+dk7QSEkNRIZvN3ddnPHUK27BBkZur3bHD3toastvT8f1IlNOJS6XwwgzDsWPeJ09StRBXTLjBA1Sp6NCCJyS25wDg1byYa/nyfpwOQoL3ssDCDNGvk+FdI0t8IUUPKMOWNBRSmCB8CoVNItHt3avIzlbk5o4dPIhLpSGrdYkCkEU/ak7TpNlsuXBBVVKiyMszfvGF7+XL1GppeHiY28vElQF3lVNYkxG2sPuCrjo6OtiOPvgB963pkle9z5FIJBQK6fV69vjpI6RIJAI95m1tbbyICGo/u9ojDDHBv+ILCawc22OJYVgaxkhMOEyaza67d42ff64qLZWtWqVat26yrs794AGF40sXxguxihBF+THM9PXXyuJi1fr15u++82PYEr2pMxHAcWfh9sZCVWCBEclo1w4iARZeXzaIMzpAiixOSHOxYCGBBY5pP3lFxJqs+EJie8PZvXhLhKdYSDQd9npnnj+3iMXanTvlWVmK3Fzdvn02icSvUtF+/5IG8AItEBkM+l6+nPj0U2Vhoaq01PzNNz6FIoXLCdlstrnWB4WJAuwUB96DA2x1hPkBGIbF9OIIgoAVRnk/gPesCLvUcPQxY54l5gKuMUM+gL0E7qKw0Y9RRJ8Lpi/AnAbef1P4FAZDkkGj0XHrluHIEWVBgTwrS715s+nMGc/AAIXjy7ACgmBrf9OBgPfx4/HjxxU5OaqSElN9/czTp2GPJ0368RIkTs1bcfBmM7y1wAvMnzyxXLig2bpVlpmpzM83fPiho60tMDa2bFGGkK91oQnCOzQ0XlurzM9XFhUZjh1ztLUFdDqaIJb/5S4L420SEvtes7cWmqYJwq9U2q9fNxw5oiwqUuTkqEUiS0PDzLNnYbd7OQc2BX3RGMPQBDHz7Jnxiy+wsjJFXp5m27bJujpcKp15/pw0m9NfUW+BkMD14k3teZtgKCrs8QTHx2f+/NPe2jrx2Wcw0qpat278+HHHrVvBiQmGJJfZFRL+HbIMSfpVKtsvv+j27lXk5Smys7GNG/WHDpm/+87e2up+8MD38mVApyMnJ0NWK4XjFI5TbjflcoXdbtrnY0KhFHqDMN85VWcXBOgAaGtre5tUxJAkheOBsTHixQtXT4+9udlUXz9WU6MqLZWvXSvPytLu2mW9dIkYHg673SlprJfkreZMOExOTXn6+y3nz+v27FEWFMjefVe+erWyuFhTWWn45z8n6+rM3303dfGitbHRJpHYJJLp//53+to1+40bjlu33L29noGBmefPfTKZX6UKaLVBgyE4Pk6aTKTFErLbKYeDcjrDbnfY7Q57PGGvlyYI2uej/X6GJF8nikqTWUuIJGAYhiTDXm/Iag3odMSLF56BAcft27bLl4sgVzcAABQMSURBVCe/+kp/6JBm2zZlcbF89WrZO+8osrM1lZWm+nr3/fukxSL4xJ/EWRIhAQxJkiaT93//s0kkE599pt21CysrU+Tmylatkq1aJV+9WpGdrcjJUeTlKfLylPn5EFmpSkvVW7Zod+3Sv/++4ciRiRMnjF98MXn6tOnrr83nzk2Jxdb//MfW2Djd1DR97dr0tWvTV69OX79ub2mxNzfbW1vx337Db96cTVKpo73d2dnpvn/fMzg48+yZTyYLaDSBsbHg+DhpNofsdsrlCs/M0MEgQ1Erq1/kbQA04/GEpqeDBoMfw4jhYU9/v/POHXtz89TFi8Yvv9QfPqytqsLKy5X5+fI1a+SZmYrsbFVJiXbHjvGPP566eNHd2xs0GJa6d3tellBIAENRlMsV0Go9g4OO33+3Xro0WVc3fvy4/tAh3d69uj17tFVV2p07tTt3arZv12zdim3YoCwqUuTmyrOy5KtXyzIzZatWyTIz5ZmZ8jVrYHBgVnsFBfCqd2VBgbKoSFVSoiopUa1fDy+QgjVisPJydUWFZts2bXX12HvvGY4enfj008m6OtOZM5YLF6w//2yTSOw3buC//gqSc/X0uO/f9wwMzPz5J/HXX36VKqDRBHS6oMFATk6GbDYKx8MEMSs8mo4wzGyi6ddfEbFgwuEwQVA4HjQYfHK5d2jI/ccfjlu37M3N1kuXTF9/PfHJJ/oPPtBWVWGbNsH4vnz1avmaNYrcXFVJibqiYmz/fuPnn0+Jxfhvv7kfPPApFCGbjQ4G06HMl1xIr2EY1tP1KRTEixczf/7pffTIMzDg6e93P3jg7utz9fQ42tvtLS3Wn3+2NDSYvv7aeOrUxCefjB8/bvjnPw0ffqh///2x/ft1e/bodu/WVlXNpp07NZWVmspKzdatapFILRKpN2+GhJWXq0pLVSUlyoICRXY2NGnyzMxZe5ibqywogHFkbONGdUWFZutW7Y4dut27Z1X32WfGU6eMX345+dVX5nPnpn780fbLL/bmZvzmTUd7u+P2beedO86ODuedO69TZ6fr3j33gwfex4+JkRGfXB40GEizGRT4dto9mmZIkvb7w243heMhuz1ks5FmM2kyBScmAjodMTrqffTI2dVlb221Xrpk+ve/x48fHztwQFNZiZWXz2omK0u+erV87VpFXp5q/Xq1SKStrtYfPjx5+vTUjz/am5udXV3eoSE/hoWsVpog0m1x7GUUUmIw4XB4ZobC8dnboNX6VSq/SuWTyYjR0Zlnz2b+/NP7+LFnYMAzOOjp7/f097v7+tx9fe4//nD19Li6u1137zq7ulx37zo7Ox3t7fjNm/YbN2xXrkz98IPpm2+Mp05NnDhhOHZMf+jQ2P79ut27Ndu3q7dsUVdUgOqUxcXKwkJFXp587VpZZqbslfDAGM4Kr7QUKy/HNm1SV1SoKyqwTZvgM7Zpk1okUm/Zot25c2z/fv3hw+MffzxZV2c5fx5Mn+PWLVdPj7uvz9Pf7xkYiJcGB9/43N/P7uJ99Gjm2TNidNSvVgfGxsjJSdJsDtlsIbudcrvDMzMMSQobHDIURRMEheOkxRIcHw9oNL6XL71DQ56HD109Pc7OTkdbG/7rr/br120SibWxcerHHy1isaWhwXz27GRdneHIEd3evWqRSFVaqszPl2dlybOyFHl5qpISrLxcU1mp27vX8OGHxpMnzWfPWv/zH3trq7OryzM4SLx4EdBqyampsNeb5m1Q2glJWBhoLAmCcjrJqamgwRDQav0Y5pPJiOHhmadPPYODYAmdnZ2OW7fwX3+1NzfbJJKpn34yffPNZF2d8YsvjJ9/Pl5bC/ZQt3evtqpKs22bWiSaVc4rIYG0sPJyrKxMtW6dMj9fkZMjX7NGvmaNIidHWVg4W2+2btXu3KndtUu3ezf7V1tdPfth1y7d7t3sZ16a3WXfvrGDBw1Hj06cODF5+rTpzBnL+fNTFy/arlyZ/u9/7TduONraZt3Uvj7Pw4exhRpfyZy93H/84ezowH/91Xb58pRYbDpzxnjypOHIkbH9+7XV1Zpt29QVFdiGDbOWv6hImZ+vyMtT5OQosrNnNZOToywowMrKNFu3ju3fP378uKm+HuwMtCzex499L1/61erg+HhoejqcfgZnXt5yISUBwzChEB0Mhr1eyukMWa1BozGg0wW0Wr9a7VepwB56Hz2CZth1966zo8PZ2cn17hy3bzva23Gp1N7SYrtyxXLhgqm+fuLECf3hw7p9+7Q7d6o3b8bKylQlJcri4tlqV1z8OvG+xkxFRWAwWZVCTVXk5SkLCyFWxDZsUG/erNm2Tbtjh7aqiitRrlDfUCxHyW/8q7pas327evNm1fr1ysJCRU7Oa20UFqrWrcPKytQVFeotWzTbt+t27x7bv3/s4EH9oUOGDz80HD06/tFHxpMnzd99Z7t8GZdK3b29oJnA2FjIag17PAxJpvnQYoIgIS0CtqeB0+XA0DQdDM56pxbLbGfUixfex4/dDx44OztxqdTe2mpvaXmdmpvtzc2zH7hf2c9sammZdZ8uXbI0NEz+61/Gzz8f/+gjw5Ej+vffH6up0e3bx7cS69bNdsOUlERrdXYj5yv7M9C5at06VWkptmmTdseOsQMHDB9+OF5bO3n6tOXCBdvly/aWFlwqdd654+rudvf1eQYGvI8fzzx9OvP8OTEyQoyO+uTygEZDmkwhu532+9/i0QgkpGWFCYfpQCA8MwODYJTbTcFo2KtEzZ1e/9fhgGg+aDD41WqfQkGMjoKn6h0a8gwMuHp6nHfuONra3hBtc7P9+nVWja9Vyv3MU/L162yXpruvz/vkCfHihV+lCoyNkSbTbPcJSaZ59LI8ICGlJYvsRmcYhqLoYJAmiLDXG3a7Z/++UuPrDx7PXDKe/YHXSxNEaqebrAiQkNIOhqbDbjdNEKjuriCQkNIMhgm73Y72dldPj7ALryGWFCSkNINhKByHXmZychIZpZUCElLaESYIW2Oj/oMPZp4/fzu6hv8OICGlHUw4bG9p0VRWulf4k1F/K5CQ0hH85k1swwZHe3uqM4JIFCSk9IOm7a2tqvXr7a2tyLVbKSAhpR1MKGRvblaVlNibm1P4pBoiKZCQ0g46GJy+elVZVDR99WpaLVuLiAMSUtpB+/02iURZVGSTSNBQ0koBCSntCBOE7coVZWGh7Zdf0uqlBIg4ICGlHWGv19bYqCwstF25shQvIEEsBUhIaceskAoKrD//HHa7U50dREIgIaUd4ZkZiJEsFy6EpqdTnR1EQiAhpR00QdivX1cWF5u/+YY0m1OdHURCICGlHbTfb29uVhYXm77+Omg0vtpKh71eyu1O4ftyEHFAQkolDEmGrNaQzcYdeJ21SEVFpvr64MREBN5ApVZbL16c+uGHgFabuvwi5gQJKZWQFsv01auW8+fdf/wRmp6GCUE0QUxfu6YsKpo8fTpoMNDBIPHXX+O1tfI1a5QFBc7OzlTnGhEDJKRUQuG4tbFRLRJpq6osFy4QL17QPl+YIGwSiSIvz/jll36VihgZMX75pbKoSFlQMHHihB/DUp1rRAyQkFIJQ1HB8fHppiZtdbUiL09/+DAulfrVavv166qSEtOZM+779ydOnFAWFGAbNljOn/fJ5WjSUHqChJR6wm63+/594+efw5rJpvp6+/Xr5u++c965Yz53TrVunaay0vrzz6TJhHoa0hYkpLRg9qVSly/r9u3DNm7U7ds39dNP09eva6urVaWlUz/8QE5OvsWLwr0FICGlCwxNUzju7u0dr61VFhSoKyq0u3YpcnL0hw/PPH+OVJTmICGlF3QgQIyOmurrVevXy9euVa1fb29upqJeV45IN5CQ0g6GJANa7fS1a5NffWX75ZfgxAQyR+kPElI6woTDlNtNTk5SOI46GFYESEgIhAAgISEQAoCEhEAIABISAiEASEgIhAAgISEQArB8QgqjlaVeETAaA+wTe4i3AuGFZBSL7d3dvI1WqVSWm7vUWrJKpaMZGYLv5RwcNIrFAp5RV1urq62NzFFWCybs9xvFYhLHuRsDRiOca65drFIpd8toRgZvSyLnNdTXOwcH5/0lgWGjGRlE1JMgSVWP2TJPsxfeCCwkEsfZkgoYjQSGQXIODo5mZBjq69ktbGnqamtHMzIST9G3gWWJhAS3P2ZFWaSQoFjmUmmyOAcHZbm5vI2Q+bl2CRiNstxcXW0tW4kXIKRIJGIUi+PfGkBXWyvLzeXWgYDRGPb7Zbm5vLox/11+u4Vkbmpi2795FcL+TF1TQ2CYZ2TEKpXySpOb7N3d3LsFBZpIYrO3YNHCuaL9sUUKKfJKS/NWwUQw1NcbxeJEioUrFdCSuqYGtDSvkLjtI5s8IyOy3FxzU1P0v1gL6RkZic6JrrZ2rgzDXknc5ZRKS0ghQdPCNTVz3RJuM8nWKrDvcY7PcwygiLn3jG0XeVvYI8SsBNF7sYnrbKhratQ1NbwszSUkcKjmSrLcXLADkJQika621tzUFL944xP2+0czMjwjIySOx2x9YlZubm7Dfj84FPGdtGQbI6gDrNmJRCJGsZg9BYnjstxc+MrdzpLEXX5rhGSVSkES4DHramuNYnEc2wJ7sZG3ob4+jjcfiUTCfj+3ckdX4kS2xMx2IlYFnBC4Lq4GoFnlJufgIInjVql0rgQ78jYmEmPEwd7drRSJ4DNXS9FCYgswulmBH9u7u6NvGWuNueZ0XkBIYb9fXVOjFIng1GCa4HrBH4Efg3Hmmf057ylHNung7AkmJDY6Yu1Ggq4dC1TKOIl3/6D4eBU05hbuXsk2pTwIDIt/RvBO45fVwhzC+IBZ4x5/rrSw6JTrsScrJALDZLm5oBDPyIhzcNA5OBgwGkFRXOWA6rhHSOIuvx1CguYEEkTPcVw7aLC5W8AziR8jxWyr4tsH2MLdK3HXDvwfrpMWfSGG+nrWDiSO4EKCwucKaa66Prqg3hru5bMeRCLNEFuMrDy4gocfcD9HZy+Ju/x2CAn8Lgg6oexASHGEwW17oBCTGl0B48DdEl0Pon8TTfxqDZrnxVosSpEI/P6YO8a8ahLHoSWOn6vEgfADgi7YYpVKo11HSPGFNFd7EXN7zKuDQJcbKnOBDPAiNO4Bo7M3513myCaRu7zUCNxrx7VCcTpkeD5GJJYFj5nYewC6TdC2gD7hPiWV2NpDxOpEDhiNoxkZ8StNzKZ6Aa1GHMxNTdBjxhUStzODm+IICZwCc1NT9OBSIu4ciePQjxLtngFQXLra2gRvRGRBdzlVCCkkbrwb4QgJrhPuBJRjJMrH4AXx0UldU8PdJSlVwKlj3hV1TY0sN3c0I8M5OMjdDl/ZexNTSHBHzU1No3F7uqIbWu5o2+Kxd3fDyMEiXTs21ud1iEcSEBKIxFBfP5e1Cfv9rEsW80YQUV0dkQXd5VQhmJCgKMEDhnZ3NCMDfJhEhDQvvOoYx5/m7RinEhjFYgiCeb+xd3ezfbLc00XnB/qsoQrOpaWYWYWWO/4lJwhUd56QFmCRINiAzzwtqWtqIO4l3uxrYRO0KTCKFZ3gCEqRSF1To+MMoPHuS3RBxbvLb0ZESXWBLAVCxkhggsB1YRtdKF+jWAxeu1IkYgcNFyAk3tcFCwlmtbBdSZBbaAuhtvHm2vDOHt1mx7FLMbOqq62dK7haGDwhJRsjEVGzN+AaoaUYfdV5MJfjAP4C6CQ6QeTMa7Cg5eWOniEhxYCNp6F8wYMCHxqKGwoofhDFjSu4Q0+RV0XMG/GI6T1zW0EAptLwnAG21zF6ulrkTSFBtWBFyAJnj9ZSzNoARo9bXHEm3UG/RfypaDwhwWSR6DSXkMBi8DbC0FkkgekOcY7MXkIkqrrzhD2XkBZwl6GLaJFDc0kh5DiSvbvb+mq0EfQTeeXCzeXazdW1xUtQLtFCStZ7dg4OQt7MTU3c6BxgY57oKssKyVBfD5cWMxgAX5G3O1sbnIODUD4Bo5E3hyB+NzqYu6SEFKc0oqs7XLhnZGSugy9eSEC03eD2TMwlpGTvMsyWgLZ7kfNFEkcwIXlGRqAv2CqVgjmCJlaoGMnc1MStauAnzDsKDjtCabITNOG8bM1j5ytAHwNYG6NYzFYsEsfBdTGKxQGjMX6VYn1FECrsyLvf8BtocdggJI6nF/+/7LUvrLNh3omzbEMQ5+wLFlL8g8S7y2+6duxdjrwyyBHWLVqW8aUlce2gQ5b1CnhCgl6mecuda5GgfidSmaKFxIVrRtiADdw8tseJxHFooWEjKz82Loo5g4aXoCsZAiFoWaIvFhpOQ309t92JBg41r5cC4gHTrYs1BYmNkSBGhb3A1vFUFDAaIdtWqRRu5egcgz9sV2fis7+jhcSWJxxk3l7smELi5UqWm+sZGYHIPP7RhGJJhGSor2erRXT5so5ffF+FN2MoOiaJJqkZAxCnqWtqnIOD0TkBMwXzONmsgsbmncqU+M0DccLVxR+mnPdZHdZpjD+KwKbIKzc1pi3iXc5cXh/b4rCefHxiCgnEDCkRT2xeIbHHVIpEyza4tCRC4k1ZWNjzfLwplYkcBCKuxI8/V91dZuJfHRjkeQ9C4niylSZgNC7ysUJuiLuY4yzgpMt2ugRBazYgEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEAKAhIRACAASEgIhAEhICIQAICEhEALw/wFHmgP7yQXtNgAAAABJRU5ErkJggg==" alt="" />
注意:串表达式中mychar是变量
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" 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注意:数值表达式中num是变量
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vX93//17d2rUIkUubl9e/aZfr3v0evXRt7/JgaGWEoComQBclvYmiaDgRCBoP399+tly4ZKys1UqkqP1+Vn6/Zvt1w/PjIF1+479wJqNVRklylVYqm6VAo4nAEBwZ83d2OxkbLxx/rjx0jSkuVubkKkahvzZq+NWuwtDR1UZH+1Vetly75Hj4M2+0oQgMg+SWCpulAIKjVulpazOfOafftg6E2oqRk4JVXLB9/7Lx5k+ztDY+Ook0iWJhIJOrzhQYHyZ4eV3PzSE2N8fXXNVKpUiJRQLQmNVVVUKCvqBj9/nu/Uhn1+Zaoy72IIPnxYSiKGhpy37ljOnNGI5Uq8/KUeXn9u3eb3nnHXl8/9ugRZTbTgcAqNXfTgKFp2u8H19T966/Wr74ynDpFlJbimZmKdeuw9HR1cbHp3Xc97e3IDCL5vYCJRiNOp6+7e/jTT/t37cKzspS5udqyMsuFC+67d4NabdTrnUWD7Xa7MQzDMMw8hyXtJEkSBIFhmF6vDy+XnXkZhg4Gw1Yr+eyZo6HBdPo0UVqKicWKlBQ8K2vg8GH7Dz+EDIbV3BtE8ovFYrEYTUd9PrK311ZbO3D0qKqgQJmbq9mxw/Lhh+M/BjYrJzMcDre1tdVyaG5unoV4MAzjZlJfX6/X62dRHqFgaDrq8fiVSvuPP+orKpR5eYrkZEwk0kilIzU1wf7+VatAJL8YQ1GhwUHnzZvGqip1cbFSIiG2bh18+21Xc3PIaKRDoVnnjGFYW1ubzWaLxWLhcPjp06e1tbUPHjyYaT5Pnz5lLafZbK6vr6+vr182NvA5TDQacTh83d2WCxeI0lKYjKretMny0Udkby/t969CBa5u+TFM1Ocje3qG//tfzcsv4zk5qsJCfUXF6NWrfqWSJsk5xgbcbjfvTFNTU21tLftydhICGYOqlxkMQwcCwf7+0atXtWVluFisSE1VFRaaz50je3tXoQ1cvfJjaJoaHna1tBhff121YQMmFmukUsvHH/v+/DNsty/QCB74ouxLm83W1NQ0UyGBLxqv7eUCE4lQIyPOGzcGyssxsbhvzRpVQYFZJvMrlXPxNZYjq1J+DEMHgwG12lpToy0rw7OzVfn5+ooKR2NjyGhc0LGE+vr65uZm9mU4HH7w4EFtbS3ro05JOBxuamriZrIcYWg64nC4W1sNr72GZ2WBDRyRy4NabcI5QyuV1Sc/homOjY09fjz03nvqTZvw7GzNyy+bz5/3dXdHPZ4FHYkiCKK2tjY+amKz2cAqPnjwgCTJhJ/V6/UYhj148KC+vr6trW2iZMsJmo44ne67d/XHjuGZmYrkZM3LL9t//DFst68eF3SVyY+mw3a7u7XVcOKEMi8Pz87WHThg/+GH4MDAQg+gu91ununjwYrw6dOn8X1CNoLa1NQ0iUqXGTQdcblcLS26gwdhubD+2LGxx49Xz2SGVSQ/hqbDNpujoUF36BAsJzWcOOG+ezc8OrrQDg9JktMMV+r1ehhaSPhuOBw2m81NTU319fXLt+/3N2g6bLONfveduri4b+1aVWHhaF3d6vnFi9UiPyYSoYaGRq9d0+7Zg+fkECUlZpls7PHj6NjYQrs64XC4ubl5SsHYbLaOjo7p9ANtNtvsBjCWJkwk4lcojFVVWEYGlpZmfP11P4atkvloq0J+TDgc1Olsly9rpFIsPZ3YsmVELh8f7V1gpqM9s9kMvuX0AzCQeP6KKTARl8t+7Zp682ZFcrJmxw73r7+ukhDoypcfQ1EBghj+9FNi61Y8J0ezY4e1piao1y8F7ZEkCSOBM+rOrTDrF4vFmEgEdgNQpKYq8/Js33yzSvzPFS4/hqKCWq3lk0/URUWYSNS/e/fotWt/2wRpwQDt1dbWEgRh+ztsGpvNNqXwIA0rYOj7Letxv4QEdbqh99/HxWJMLB56//3gsppVN2tWsvwYmg7qdMOffaYuLsazs7VlZfb6emp4eHFGlsBGJWRG+UDYhjfncy6zt5cmYbvddvmyMi9PIRIZjh8ne3uFLtFisHLlxzDh0VFbbS1RUoKLxdp9+xw//7xw01niCYfDtgmYRVZms5ldNrHsZntOh4jHAz++rUhJ0R065OvuXg2jfytWfrTf7757V3foEC4Wa6TS0atXw1brKtkMYjkSHRtzNjWpi4sVKSnasjLP/furIfi5MuXHRCIBlcp0+rRy/XrVxo3DcnnIaETaW8rQJOn85ReipATk5/39dyS/5QnDhG220bo6oqQEz8kxvvEG+ezZ6plIsUyhSdJ54wZRUqJITkbyW8bQgYD39991//wnlp7ev3On6/btqM8ndKEEJr7/udQCpzRJOhobiS1bFMnJ2n37vJ2dqO+3DKHp8RB2To5SIrF89FFocHA1tKOTEx99XWqj9lGv19HQACPvukOHfH/+ieS3/Ij6fM6bNzXbt2Pp6fpXX/V1dyO3MxaLwT4XS9n6RZzO0e++UxUWKkQifUXF336GbeWyouTH0HRApRp8+22Y1Tl67VrE6RS6UEuCJWjueFAWy0hNDWxcP1hdHSAIoUu0GKwo+UW9XueNG8S2bXh29mB1tR/D5jjCTpIkhmE2mw12amlra+vo6OAOebMJuJ+CtXnsS3Z7Mtj6hZ3CMlGeC8HSl1/IYDBfuIBnZuJZWeYLF0KDg0KXaDFYQfLjmD7N9u2On3+OejxzzBJmrjx9+hSW6sEkstraWlYtkIArtljcjhJQ9ZufA9NWYPlfU1MTu5BvQRW49OUXUKsHq6uxjAylRGKtqaGGh4Uu0WKwcuQX9fmcTU2a7dvHTR+Ozz3iwk4cY5eow3o8tipPU34w8xNesrsGsnOmIRPuSlzezoJceJZ2omQ8sXHfam5uXoJz1shnz/T/+pdCJFJt2DB69WrE4RC6RIvBSpEfTQc0GtPp03hWFrF1q6OhIer1zj1XEEZHRwf3JHe3smnKj7t8NhwO18YtqAWryL4kSXKiCWu8GWcTJeNFVrDnwJJCbnOwJGAYX3e37tAhRWqqetOm+Xp8S58VIj86EHDeuqWRSnGx2HDqlB/D5mWOy5Tqmr7zyU0Qf4b3kQUF/N6JFtQLAhONetrbtXv2KJKTidJSV0sL7fcLXajFYEXIj2GCev3Q++/j2dmqjRtH6+oic+71AStSfrGlt1Mo7fe7WlqIbdv61q7t37XL89tvq+S3H1aC/BiK8ty7p92zR5GaOnD06Nhff83XkiKh5DfvfT8ekP/SkV/U67Vfv64uKlKsWzdw5MjYo0erYcw9tjLkF7bZrDU1yrw8pUQy8uWXYat1vnKeUl1ut5vXOYSu3RzlN+99Px7Q1Vw6C5fCVqvtm2+UeXlYWpqxstKvVApdokVi+cuPYfwKheG117CMDO3evZ729nmc5jId4wZrYSGSQZIk7C6xpJxP+GkkEBtJkhB9efr06QJdbhaEDAbzBx/gWVm4WGw+dy5kMAhdokVi2cuPDgZdzc2a7dvxrCzTu+8Gdbp59FumIz8YimB58ODBUuv7mc1mnmu6tPaJoWmyt9dw4gQmEinz8myXL4dHR4Uu0yKx7OVHjYyMXLyozMtTb9o0+v33cx9q5wIr1nl7sbjdbl6vCea+sNNfeAniXcH4M/F5zi/szwMSBLHUtuil/X73nTv9O3dC2NN561Z0bEzoQi0Sy15+fqXSWFWFicXa/fu9XV1oTe2yg7JYRr74QimRjEfOnjxZPT/zsLzlx9C0t7NTu38/LhYPvv32Kpmnu5JgwuGxR4/0FRWYSITn5Fg+/pgaGhK6UIvH8pYfu0ZTmZc38sUX8xjzRCwOYZvNduWKauNGRUqKRip1tbTQS8w3XlCWt/zCNpv1q6+UeXlESYmjoWFVPbkVAENRY48f6ysqFCIRJhabTp8OqNWrqvuwvOUX1OuH3nsPz8rq37XL096+qp7csodhKLN55MsvVfn5fWvWEKWljsbGVTLVk2V5y8+PYYZTp7CMDH1Fxdjjx0IXBzEDoiTpaW+Hada4WDx09myAIFZP0AVY3vIbe/Ro4MgRLCNj8M03A2q10MURmHA4TBBEW1sbd1Evi9ls7ujogLcEn27GUJRfoTCdPo3n5ChSU7VlZe47d6Krr++wvOXn7erSlpXhmZlDZ88GdTqhiyMksI4BlvO1tbXV19dzZwvAT1gv2ureyWHC4YBGM/z556qNG2GB30hNDTU0tAp3xFre8vPcv6/duxfPzjbLZKtnplI84XAY1uNzLR47vG77+y8iCbvgiAmHg3q99dIlYts2xbp1eE7O4Ftvkb29q3NHrGUuv/Z2+LlM8wcfrCr58bxHMG4TTbOGSZ7cCdaw4GjxDSAdCgXU6pGLF4mtWxUiEZaerq+o8Ny/HyXJVbLEgceyl1//7t14dvZCz9PV6/VtbW1ut5sgCFjt3tTUpOf8CBZsmsT9iNvtbmtrY9OwL9lfCGON1UR5JsRms4F7yT05+TTO+CmmCeeyLjS030/29Vk++YTYskWRkoJnZg4cPuxqaYk4HKvQ7QSWt/y8nZ2L0/eDBXIdHR1NTU0YhoG14S6Zi58zzavi8LKtrY2bA/TQ6uvrnz59Chs6TbIMDwRcG/dbnJAz/PIRTOyEjdXgXZIk49c3wKqoxdt8iWGiPp/v4cOh995TFRYqUlKwjIyB8nLnrVvh0dHVPFy0vOU39tdfA+XlWEaG4bXXyL6+hbsQyK+5uZmt1gRBcKv1NOVXX1/P5sAqkHUaYfFEvB0jSRISJ/z1aSgJQRDcnwFsamoCiU5k6BZPfjQdJUlvZ+dgdTVM7FSuX284ftx99+5qtnvA8pZfsL8ftlfq373b096+cDsUgPy4niHPgExTflxpxZ+JxakCdgedSHjcsrFrDrkfiS/GRBdaIBiajrhcnt9+Mxw/jmdn961Zo8zLM1ZVee7fj7jdq1x7seUuv4jDYbt8WVVYOL7Fi8u1QBdKuDvDLOTHlUFCYfBUAZaNF9JMWLaEixJh1bxg8qPpiMvlvntX/69/wfieqrDQLJONPX68amMtPJa3/OhQCJaK4VlZptOnAwSxQA9VKPlBMsh8IgMIEuW9xRYY+n48G5uwQzjP0HTE6XQ1N8O8CEVysrqoyHLhgl+hoJH2nrO85RdjGD+OGysr8cxM7Z49nnv3Fmj4aBbygzXmc5cfmxjGD5qbm3nRUciHd5K7lxlsp819FzqZU0ZZZw0TjYatVldz80B5OZ6ZqUhNJbZsGf7884BavTrH9yZimcvv+aIHVX6+UiIZ/vRTymxeiB7FlPKD0Ah3JA3UMl/yA9gYDG/n3/r6el6PsampiR1Yh49wCw/TYhZkqyWGof3+gEZjq63V7t+PZWQoUlKIkpKRixeR9uJZ9vJjKMrb0aHdvx8Tifp373Y1N8/vfhPAlPIDe1JfX6/X68FSwVDe/MoPgJ0juGfA/+zo6LDZbGazGTYyY40bSZIwzYUt2wIN+jEURVksnvv3zTIZUVqKpaUpUlOJbdtGvvwyZDAwS2ZjtaXDspdfjGEoi2VYLlfl5+OZmYZTp3wPH9Kh0PxeZEr5xZ77e0BbW9v8Op/TKSE78FBfX8/Tp9ls5g5LzLP2GIahqLDV6nvwYKSmZuDwYWVurmLdOiwjo3/XLuvly0GtFtm9hCx/+cViDEWRz54ZTp3Cs7NVBQVDZ8/6FQo6EFj8kkCkUahfroSNoSZZzZBwp9A5AcKz2Xzd3davvhooL1fl5ytEIphIbTh50nnzJmWxIO1NxEqQXywWi/p87l9/1R06BPvMm86c8T14ECVJNLK0UNA07fdTZrPvjz+sNTUD5eWqggLFunV9a9fiOTnasrKRixfHHj+OOJ2reVLLlKwQ+cVoOjw66mho0O7di6WlKXNzDSdOuFpaKLMZNb3zC0PTUZIMDgx42ttH5PIXFi85GReLNVKpWSZz3707fufRAMOkrBT5xWIMTYetVkdDg+7AATwzE8/O1u7dO/z5596urrDVivr9c+W5n0n29jpv3DDLZNq9e5V5eZhIpEhNxbOzNb0SbhUAABXbSURBVDt2mM6ccd66FdRqaeR3TI+VI78YTHFyONytrYZTp1SFhbhYrCosHDh82FpTM+4IrY7fzZlfmGg06vMFtVpPe7v10iXDqVNEaSmena1ITYV9qbVlZeZz51zNzQGNJurzIeFNnxUlv1gsFqPpqNc79uTJsFyuO3BAKZFgIMKjR0fr6sb++ivicCARTgeGpmmSpCyWsb/+cjQ2ms+d05aVjZu7lBRMJFJt3DjwyivDcrnnt9+CAwPRsTHUzZspK05+sVgsFmPCYcpi8bS3m2UymJKGiUTqoiLDiROjdXW+7u7Q4GCUJFF1SQDEVIaHyb4+V3Pz8Gef6Y8dI7ZswcXivrVrFcnJeGYmsXWrsbLSVlvr6+6mzGba70cWb3asTPnFYrEYw9CBQFCvdzU3m06fJrZuxTMzsYwMdVHRwCuvWD75xNHY6O3s9GNYyGQK2+1Rn4+hqFUrSAioUMPDfoXCfeeO9dIlY2Wl5uWXlevXK0SivrVrsbQ0ZV6edt8+87lzzhs3/BgWcThQcGWOrFz5ATQdJckAQTgaGgarqzXbt+M5OZhYrMzNJbZu1R06NFhdbfnoI9u33zp++sl1+7anrc3X3U0+exbQaEKDg2G7PeLx0IHASt0Aj4lEol5vyGQinz513ro18sUXxspKzY4dL5zMtDRlbq5GKjVWVlq//trb0RHU66Mez0q9IYvMSpcfQNPRsTG/Uun85Rfz+fO6Q4fUxcV4Tg6WkYGJxXhOjqqgQF1URGzd2r9rl+7gQcNrr5neecfyySe2b74BWbp//dXT3u7t7PR1d489ejT2119kT49foQioVAGNJmQwUMPDEZeLJkkmElniBoGJRqMkGbZaAyqVt7PT0dBg+egj/bFjmu3blXl5WEaGIjUVS09XSiQaqdRw8uSIXO5qafFjWNhmQ+Zuflkd8gNoOkqSIYPB98cf9uvXLR9/bDhxQltWRpSWqjZuVObl4VlZmFiMiUSYSISLxXhOjjIvT7VxI1FaqtmxQ7tnj+7AAd2hQwPl5fqKCv2//mU4ccL4xhumd981X7gw8sUXo99957x509PeTvb0BAhiXJCBgOAOLRON0n5/xOmkhob8OO7t7HQ2NY18+eVgdbW2rEy9aROenY2JRIp167D0dGVenmbHDsOpUyMXL7qam8meHspioQMB1LtbCFaT/J7DRCJRny80OEj29Xk7O523btl/+MH69deWCxdMp0/rjx3T7tunkUrVmzerCgrAWcXS0hQikSI1VZGSokhJUaSmwtQqLC0NE4vxrCwwoURJSf+uXfqKCtM77wx//vno9987b9703L9PPn0aUKtDRiNlNkeczqjXSweDTDQ673WaoWmGoqIeT9hqDRmNAbV67MkTz2+/OW/csNXWWj76yFhZqS0rUxcXK9evB/dSkZKCi8WqDRv6d+0yVlVZa2pcLS3ks2fU8DCKqSw0q1F+f4Nh6FAoAvV1cDBAEGRPj7ez033njv36ddu33w5/9tnQf/5jrKoyHD8+8MorukOHdAcOaMvK+nft0kilRGmpevNmVWGhMi8Pz87G0tMV69YpUlPHfdoNG4itW7V79uhffXXwrbcsFy5Yv/pq9OpVx08/OW/edLW0eO7d89y/7+3q8nV3jz1+PPbXX+TTp2Rvrx/HAwQRIIigVhscGAgZDCGDIWQ0vviH/d9gCA4MBNRqP477Hj70tLc7b960//CD9auvzOfPG994Y6C8XLNjh7q4WJmXh4vFinXrFMnJfWvXKkQiPCeHKCnRHTo0dPasrbbW09bmxzDKbKZRTHixWPXySwjDMBRFk2TYbqfM5qBW68dx8unTscePfX/+6e3s9P7+u+fePfedO67btx2NjfYffrBevmz58MPB6uqBw4c1Uqm6qEiZm4uLxZhIpEhOVqxbh6Wl4ZmZyvXrVfn5qo0biS1bNNu39//jH9o9e7T79ukOHRo4cmTg6FF9RYXh+HHDyZPGN94YfOutobNnh/7zH/P585YLFywffgh/zRcujB/nz5vPnRt67z3Tv/9tOHFi4MiR/l27iJIS1YYN0LNVpKb2rV3bt2ZN39q1sARBmZurLi7W7t8/+OabI3K5o7HR9+efQZ0u4nDQwSCydYsMkt9soWmGpulgMEqSEZcrbLOFjEa/Uul7+NB99679+nXr11+bz50zVlbqDh3SvPyyevNmZV4enpMzrsnUVLBCoI2+tWsVKSmK5GRFSgrYT5hTgqWnj8eHxGJcLMae/31xZGRg6ekvMmSVlpaGZ2UpJRJ1UZFm+3bdgQOGkyfNMpntm2+cN254OzsDKhU1PBz1+dAkBAFB8ptvOL2v4MCAH8N8f/zh+t//HA0NttrakYsXzefODb79tuHEiYFXXtEdPDjux+7YoXn5ZaK0lNiyRV1crC4qUhUWqjZsgFX8ytxcPCeHf2Rnwz/K9euV69erCgrUmzZppFLtvn2G48dNZ84M//e/tm+/dTQ2ultbfd3dfgyDoRTkWy4dkPwWHhDk2FjE4aDM5pDBENBoyL6+sSdPfH/+6bl/33PvnvvuXdf//ue6fdt565bzxg3HTz/Zr1+3X7s2evWq7fJls0xmOnNm+PPPrZcuvTi+/nr879df22pr7deuOZua3HfueDs7/QpFsL+fsljCdnuUJNF08yULkt+SgKFpJhJhKIqhKDoYpP3+qNcbcbsjLpcfx4fOntXu3etqaaFGRqjhYcpioUZGwlYrNTwctlrDo6Pj0wOQ0pYbSH5LHcpsHjp7Vr15s/PmTaHLgphnkPyWOiA/VX6+vb4eTfVaYSD5LXVCRqPpzBnl+vW22lra7xe6OIj5BMlvqRPUagerq/HsbOvly5EF2EMRISBIfkudAEEYX38dz8wc+eKLsN0udHEQ8wmS31LHj+OGkycxsXj4s8/Co6NCFwcxnyD5LXX8OG547TUsI2P400/DVqvQxUHMJ0h+Sx0/hhmOH8cyMiwffUSNjAhdHMR8guS31CH7+vTHjmEZGZYLFyjOT7ggVgBIfksdP4bpKyqwjAzzBx/w5AcLF6MeDxMOo0XoyxEkv6WOX6k0nDiBpaUNvfdeyGBgzzMUBXvYOBob0e8HLVOQ/JYYDMOzYwGNZrC6WiESDVZXB7Xa8VThcFCrNZ05o8rPJ0pKnL/8shA/q4ZYaJD8lhZRr9evUJC9vRGHA5YFhQYHzefOYenpA0ePkj09sViMiUSC/f3Dcrlq40ZFaqq6uNj5yy9Rn0/osiNmDJLfUoKmfQ8eDBw+rN2zx3blih/DoiQZHh0d+fJL+MkKb2cnEw6HjMaRixfVxcUKkUhVWGg+fz5AEGjV7HIEyW8pwTB+pdJYWakqKFAXFw++9ZanrS1kMNi+/RbPzlYXFztv3qTMZtu33xKlpYrUVFV+/tB77/kxjA4GhS46YjYg+S0tGIoie3pMp0+ri4qUEom2rMx25Qo4n3hW1ohcPvrdd/07d2IZGar8/KGzZ8mnT+lAAIU9lylIfksOOhQi+/rMH3ygLipSiEREaam2rEyRnKwQifT/+tf4DxhKJINvv0329KA1EMsaJL+lCB0KBdTq4U8/JUpKYMNf2O+d2LoVthU1Vlb6/viD9vuR3VvWIPktUWBoYeTiRWLLFsW6dZhYrMrPx7OysPT0gcOHPW1tEbcbaW+5g+S3dGEoKqjVWj76SJWfr0hOht3v+3fudPz0U8ThQHtyrgCQ/JY0DEWRz54Nvvkmnp3dt3atqqBg+LPPqKEhtFPgygDJb6lDk+TY48fmCxcGjh4d/vxzP4YxFCV0oRDzA5Lfkoemab8/ZDT6FQrKbEZDfCsJJD8EQjCQ/BAIwUDyQyAEA8kPgRCMRZVfNBBYzMshEPNLNBAgCWIeq/GCyM8kl9tbW3knrY2NmESyoAq01NVZ6uqmn15XVWWSy6efPhoImORyyuHgngyaTLqqqulnssjoqqp0VVXRQEBXVeXt6YlPEA0ErI2Nuqoqg0xGORzWxkaSIBahYNbGxvhKYm9ttTY2Tj+T3pdemiQ9fOugyTSLzyaEJIjepCSSIOCh82rCLJh/+VEOBxQxFosFTSaSIOBwdXX1JiUZZDL2DPuYdVVVvUlJ0z8mqh+YRDJ9OQVNpt6kpBk9AFdXFyaR8E7CI5l+JosMyC8Wi9lbWzGJxCCT8VpATXl5b1KSprxcJZXCd5lppZwdCR+WSio1yGTTz2RKCemqqjTl5Qkb/bnILxoIaMrLMYkkODg4oxx4zL/8LHV1rDWYUldsMk15OUkQ3p4eaH0nOuytrfD9oZ3mHia5vDcpySSX886zh6uri1tOKJulrm6i9HBwpW6QySD/KRsI9rmSBDEjAzvv6KqqWI8A2myuNYA2kVvaxZEfXJdnPeDqCU00vDX9g62B0UAAGp34POciP8hZU14+R8dnnuUH35Zr1ib6hlyjwbbQ4KBOkj/P+nOP3qQklVTKO8k9uH4pPP5JEkOLwK2L0UAAKgflcCRsEbgHW7GgYHO7qVMQfyu4ByaRJLwt8FloStjntQjySygkuCI0oAmFBJ2u+AMa3Pjz3CbG29OTUNUTyQ/sxyRVAlQHL+H/ifzbKZln+UEvIhaLGWQyV1cXdK4msWPwqaDJBF/AIJNN3pxM1PcFzwoqvauri2foeARNJl6LmDBbqJqskOytrSqpFP7nKjBeftx8FkF+8Y4A9wDtxZ/nfsfFl5+9tZUrIWtjI/RZeL7PlOZlmhYMvuB02utYLObq6prkfib0sGbdCZxP+bG9PtZGTdP5ZFFJpdN0KnjXxSQSth/Pbd3jYb12rki4TgWbDJNIuAYTHhX8P7n/CflA64NJJKyZhUYBzgdNJktdHSaRgLXnGWduMu5JkBPUm2mKxCCTJUwJNhNyg1ru6uqKlx/lcJjkcvgW8Rdly4NJJLy3giaTQSaDG2KQydgvEn+r4YomuZxt3VjiDfU0j4RLseKFFN8wTXk/Z+GyTsJ8yg88OjigwzOJ8wltNvcMeHeT9/0SWnlwA7gvJ5IfaK83KYmXT3yd4MVpWWeVfXeiS0wpP3jwBpkMajPcqPiWhWeXYs8NKdxStuPK+9bcg70ct/PJ9manKT/wXaGHDInZdy11dWx5oCnh3U9ov9hWBkxEQvlBmnifhfsoeT7/5M4nW0LureACgbfJvaSELF35gQvn7elh7zU8m0nkFG+CZupGQyVg3XGo8ZhEwquLkC24nexNZ/sDvC41+w/7vdg84QzUxYmck3jNcAsMaVRSKfe7Tyk/XowkFouBbWHdHp5TxFoqbksRH+yd0vnkjg3AfWBtFNx27rvs/yqplNt4wXWhFZjI+kUDAVdXFy9MNbkjE5tKDOBGJvQU4H5OVNkmqq6xWExTXr5E5QdwLR78P6WfBkDKyeOQPD+btbdcL0IllXK1AR169kJsneDWA+7/YPe4V4G2mRvRhTQJe+fTlB9vyGtK+YHDzE0AEQW2KYm/LjwFV1cXKxJwI7k6mVHfj/Ud4CU0SfE1GArG+4IwsMFegttSsFcElXI/yPrkU/ZiJqlaCV0waLxMcvlEYxIT+bS6qqoZDY1MzjzLjxufiHHkB40H1DBdVRXcGl6NAW9tkgOePa+ugPXj3l9ekxnf3MYn41k/bjcPvhSMiMzI+WSvklB+vPJMKT/w5eLvBvvFJ5If+TzCzMY2JrlKvPxIgjDJ5XCtF7UwFotx2j4Yy+XlyfVHWCecvQT3Xe4VIY7FeiXst+AOIHMjXnBPeG+BF83qKl5+cCvA/59oVJD9LO+5mOTyyQ3yjJhP+UHrBXUX7incymnKb0q4IgE3EjKchfzYUiVMQz6PzsFLeDw8+c3R+s1dfrxezUTOZ+z5fY43ffFX4ckPBAbulrenh42lsR+HwEwvp7cfm0B+7EOZyPlkXxpkMl7nJRYHPH3o9XFzoxwOXdw4e3wm0BxQDgfY80kUGC+/8Yj9PO2yM899P9YJJAmCDYTCs4HQFtQMdvB6FvJjr8V6DjOVH9g3rgsRnwYqAc9Pm8e+35TyA6vOJoN2epKb0xvXAWbvCZzvTTT2Nbn8wI3npo//OrHnz531hEG0CUfPY9OQH+QG8osPqMZiMQgusGqHegWRPOiaxs+v4GYC7QWbBsLmEykwXn7jEYq5TXZhWcAp12BhYs9rBvReoGawFYIkiMk7h+xhbWzkDhVyman8wA5we3cJJcqbFcWTH0zTiT9mJz8IKnKDPXCGTcbrwbLJuDeB58mzL0HJ3OYGQh3xheHJr/fvwRXwbrgtIO8Gwgeh2Y330CD9lPLj0hs3CsIOZnA78+AbxwsPYOUXDQTYLh83AdjShApMGPvB8vK4HVRLXd2SGHanHA6YMqvjRLRjz2vGRM5nwoBy/AHN2yzkxw6Lw0tom3mBgYQOKu+DPPlN0lLwpN6blGSpqyOfj5oklB8k05SXe3t6vD09EKjguVUQ6gDPwtvTM0knBG4pG6bimqbYcxXBW5PLj+1eQocKbAv7CFRSKYyeQ4G5+bBjEuCyQkSAjItyJXx8XLiShlvETkzl5gD6YS/BQ/c8/A79z/h53mwO8cXQPZ8OCTE8iANxhyiDJlPvSy/NYgADmE/5eXt6wKmDrgL7Veer72epq4sfmY1NID8QDxysGznRDMCE8os9r2Hw/+xCLyAb1oDHJpAf67/BAeNsvGQkQXCnJaikUnDwKIcDIuwwZ4hNoCkvD5pMYOqhQYSbAM4b+0UmkV/QZGKvCAM2XGMOGuO+y/063Hd7OTHGyUMvXMCKwv2Hb8Ea7d6XXmJDAJa6OphHDllpysvtra3cuUpQvKDJZG1snMRMsW+5urrgTrIPjr3hID9uaMDb09P70kuz9kUXyvmEYD3bN+PJD2KJU8qPF86acO5sIvmxa2fIv48uBk0m7mA6NM8JXbvY3/0rkBxkC7V5or4f9Gzjv8iUNw3ie5PPYII08XMaQWPQ8MG7L2blm0zQ7oB1NchkMwqdx99DFtZzSfhBdqJmvJuacOAh9veJKTB4CHcjGgj8zdN+6SU2HsttIl1dXWx7AU1PLyfsZJLL4XFPcoBKIXxoqasD8x7/RNh5AhAjmHUkZqHkZ5DJ2JsyUVdn8phvLG4OWsJRpngS+usJ4fqQkwc2Ys/lN/n8Zl6Ub3GIBgLx9YMdImfvWNBkYscPJoqLLALxqy648VvudGeTXJ7wcZPPp9RMlCBoMsEXNMnlbM6s6Z78mL4byYZ8Z7TElMdCyY/X4M1ulS1vtGeambATuKfD5O03L+Wse9iCwLXz3JNzXyQqOAI2H1zmXiXQXi8IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIBpIfAiEYSH4IhGAg+SEQgoHkh0AIxv8HdmuPs7BqoqUAAAAASUVORK5CYII=" alt="" />
注意:布尔表达式中num是变量
任务
小明有10元钱,买了一个本,花了5元,小红说:"你剩下的钱加上我的6元钱,就可以买个铅笔盒了。
1.在右边编辑器的第7行,定义变量num1,并计算小明剩下多少钱。
2.在右边编辑器的第8行,定义变量num2,并计算小红花多少钱买铅笔盒。
?不会了怎么办
表达式中可以是变量、字符、数值等。
小明剩多少钱:var num1=10-5;
小红花多少钱:var num2=num1+6;
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>表达式</title> <script type="text/javascript"> var num1=10-5; var num2=num1+6; document.write("小明还剩:"+num1+"元"+"<br>"); document.write("小红花:"+num2+"元买个铅笔盒"); </script> </head> <body> </body> </html>
表达式
2-6 我还有其它用途( +号操作符)
操作符是用于在JavaScript中指定一定动作的符号。
(1)操作符
看下面这段JavaScript代码。
sum = numa + numb;
其中的"="
和"+"
都是操作符。
JavaScript中还有很多这样的操作符,例如,算术操作符(+、-、*、/等),比较操作符(<、>、>=、<=等),逻辑操作符(&&、||、!)。
注意: “=” 操作符是赋值,不是等于。
(2) "+"
操作符
算术运算符主要用来完成类似加减乘除的工作,在JavaScript中,“+”不只代表加法,还可以连接两个字符串,例如:
mystring = "Java" + "Script"; // mystring的值“JavaScript”这个字符串
任务
使用"+"号连连看,看在网页中能输出什么内容吧!
1. 第7行输入1+5;
2. 第8行输入"中"+"国";
?不会了怎么办
+号两边是数值,功能为计算,值为数值。
+号两边一侧为字符串,功能为连接作用,值为字符串。
代码:
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>+操作符</title> <script language="javascript"> var mynum=1+5; var mychar="中"+"国"; document.write("mynum的值:"+mynum+"<br>"); document.write("mychar的值:"+mychar); </script> </head> <body> </body> </html>
+操作符
2-7 自加一,自减一 ( ++和- -)
算术操作符除了(+、-、*、/)外,还有两个非常常用的操作符,自加一“++”
;自减一“--”
。首先来看一个例子:
mynum = 10;
mynum++; //mynum的值变为11
mynum--; //mynum的值又变回10
上面的例子中,mynum++使mynum值在原基础上增加1,mynum--使mynum在原基础上减去1,其实也可以写成:
mynum = mynum + 1; //等同于mynum++
mynum = mynum - 1; //等同于mynum--
任务
试一试,让变量numa自加一,让变量numb自减一
1. 在右边编辑器中第9行输入numa++;
2. 在右边编辑器中第10行输入numb--;
?不会了怎么办
numa++ : 变量numa值加1后,再赋值给numa
numb-- : 变量numb值减1后,再赋值给numb
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>++/--</title> <script language="javascript"> var numa=1; var numb=7; numa++; numb--; document.write("numa的值:"+numa+"<br>"); document.write("numb的值:"+numb); </script> </head> <body> </body> </html>
++/--
2-8 较量较量(比较操作符)
我们先来做道数学题,数学考试成绩中,小明考了90分,小红考了95分,问谁考的分数高?
答: 因为“95 > 90”,所以小红考试成绩高。
其中大于号">" 就是比较操作符,小红考试成绩和小明考试成绩就是操作数,并且是两个操作数。
也就是说两个操作数通过比较操作符进行比较,得到值为真(true)和假(false)。
在JavaScript中,这样的比较操作符有很多,这些操作符的含义如下:
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" alt="" />
看看下面例子:
var a = 5;//定义a变量,赋值为5
var b = 9; //定义b变量,赋值为9
document.write (a<b); //a小于b的值吗? 结果是真(true)
document.write (a>=b); //a大于或等于b的值吗? 结果是假(false)
document.write (a!=b); //a不等于b的值吗? 结果是真(true)
document.write (a==b); //a等于b的值吗? 结果是假(false)
任务
实验考试成绩中,numa考了1分,numb考了7分,我们来比较下它们的分数。
1. 在右边编辑器中第10行输入numa>numb
2. 在右边编辑器中第11行输入numa!=numb
?不会了怎么办
在半角及英文状态下输入>、!=等比较操作符
numa、numb要小写,因为JS中区分大小写
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>比较操作符</title> <script language="javascript"> var numa,numb,jq1,jq2; numa=1; numb=7; jq1=numa>numb; jq2=numa!=numb; document.write("numa大于numb的分数吗?"+jq1+"<br>") document.write("numa不等于numb的分数吗?"+ jq2); </script> </head> <body> </body> </html>
比较操作符
2-9 我与你同在(逻辑与操作符)
数学里面的“a>b”,在JavaScript中还表示为a>b;数学中的“b大于a,b小于c”是“a<b<c”,那么在JavaScript中可以用&&表示,如下:
b>a && b<c //“&&”是并且的意思, 读法"b大于a"并且" b小于c "
好比我们参加高考时,在进入考场前,必须出示准考证和身份证,两者缺一不可,否则不能参加考试,表示如下:
if(有准考证 &&有身份证)
{
进行考场考试
}
“&&”是逻辑与操作符,只有“&&”两边值同时满足(同时为真),整个表达式值才为真。
逻辑与操作符值表:
aaarticlea/png;base64,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" alt="" />
任务
JavaScript考试成绩中,numa(表示笔试)考了60分,numb(表示实践)考了70分,只有两项成绩都大于或等于60分,该课程考核就通过。
1. 在右边编辑器中第10行,if语句的括号内输入numa>=60 && numb>=60
?不会了怎么办
使用&&完成与操作
numa、numb都是小写的,因为JS中区分大小写
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>逻辑与</title> <script type="text/javascript"> var numa,numb; numa=60; numb=70; if(numa>=60&&numb>=60) { document.write("JavaScript考核通过!"+"<br>"); } </script> </head> <body> </body> </html>
逻辑与
2-10 我或你都可以 (逻辑或操作符)
"||"
逻辑或操作符,相当于生活中的“或者”,当两个条件中有任一个条件满足,“逻辑或”的运算结果就为“真”。
例如:本周我们计划出游,可是周一至周五工作,所以周六或者周日哪天去都可以。即两天中只要有一天有空,就可以出游了。
var a=3;
var b=5;
var c;
c=b>a ||a>b; //b>a是true,a>b是false,c是true
逻辑或操作符值表:
aaarticlea/png;base64,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" alt="" />
任务
在右边编辑器中第10行补充代码,在“jq1=”后输入numa>numb || numa==numb,看看结果是什么。
?不会了怎么办
numa、numb都是小写的,因为JS中区分大小写
使用||完成或操作
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>逻辑或</title> <script type="text/javascript"> var numa,numb,jq1; numa=50; numb=55; jq1= numa>numb||numa==numb ; document.write("jq1的值是:"+jq1+"<br>") </script> </head> <body> </body> </html>
逻辑或
2-11 是非颠倒(逻辑非操作符)
"!"
是逻辑非操作符,也就是"不是"的意思,非真即假,非假即真。好比小华今天买了一个杯子,小明说:"杯子是白色的",小亮说:“杯子是红色的”,小华说:"小明说的不是真话
,小亮说的不是假话
"。猜猜小华买的什么颜色的杯子,答案:红色杯子。
逻辑非操作符值表:
aaarticlea/png;base64,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" alt="" />
看看下面代码,变量c的值是什么:
var a=3;
var b=5;
var c;
c=!(b>a); // b>a值是true,! (b>a)值是false
c=!(b<a); // b<a值是false, ! (b<a)值是true
任务
在右边编辑器中第10行补充代码,在“jq1= ”后输入!(numa<numb),看看结果是什么。
?不会了怎么办
numa、numb都是小写的,因为JS中区分大小写
使用!完成非操作
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>逻辑非</title> <script language="javascript"> var numa,numb,jq1; numa=60; numb=70; jq1= !(numa<numb) ; document.write("jq1的值是:"+jq1+"<br>") </script> </head> <body> </body> </html>
逻辑非
2-12 保持先后顺序(操作符优先级)
我们都知道,除法、乘法等操作符的优先级比加法和减法高,例如:
var numa=3;
var numb=6
jq= numa + 30 / 2 - numb * 3; // 结果为0
如果我们要改变运算顺序,需添加括号的方法来改变优先级:
var numa=3;
var numb=6
jq= ((numa + 30) / (2 - numb)) * 3; //结果是-24.75
操作符之间的优先级(高到低):
算术操作符 → 比较操作符 → 逻辑操作符 → "="赋值符号
如果同级的运算是按从左到右次序进行,多层括号由里向外。
var numa=3;
var numb=6;
jq= numa + 30 >10 && numb * 3<2; //结果为false
任务
?不会了怎么办
操作符之间的优先级为:
算术操作符 → 比较操作符 → 逻辑操作符 → "="赋值符号
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>操作符优先级</title> <script language="javascript"> var numa,numb,jq1; numa=5; numb=2; jq1=numa + 30 >10 && numb * 3<20; jq2=((numa + 30) / (7-numb)) * 3 document.write("jq1的值是:"+jq1+"<br>"); document.write("jq2的值是:"+jq2); </script> </head> <body> </body> </html>
操作符优先级
2-13编程练习
计算以下计算公式的结果。然后在浏览器中运行一下,看看结果是否跟你的结果一致。
任务
第一步: 在 ? 处填写你的答案。
第二步: 填写完成后,运行一下,看看是不是跟你填写的结果一致。
第三步: 如果你有不一致的地方,思考一下为什么跟你的不一致呢。
?不会了怎么办
代码:
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>JS基础</title> <script type="text/javascript"> var a,b,sum; var a = 5; var b = 100%7; sum = a > b && a*b > 0 ; document.write( "我认为 a 的值是:" + 5 + " b的值是:" + 2 + "sum 的值是:" +true+"<br/>"); document.write( "答案是,第一轮计算后,a 为:"+ a +";b为:"+b +";第一次计算sum为:"+ sum +"<br/>"); sum = ( (++a) + 3 ) / (2 - (--b) ) * 3; document.write( "再一次计算后,我认为 a 的值是:" + 6 + " b的值是:" + 1+ "sum 的值是:" + 27 +"<br/>"); document.write( "答案是,第二轮计算后,a 为:" + a + ";b为:" + b +";第一次计算sum为:"+ sum +",sum的类型也发生变化了。"); </script> </head> <body> </body> </html>
JS基础
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