<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>点击按钮计算 x 的值.</p> <button onclick="myFunction()">点击这里</button>…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> document.write("Hello World!"); </script> </body> </html&…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>如果时间早于 20:00,会获得问候 "Good day".</p> <button onclick="myFunction()…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>创建 JavaScript 对象.</p> <p id="demo"></p> <script> var p…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p> JavaScript 能够直接写入 HTML 输出流中: </p> <script> document.write("<h1>这…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>本例调用的函数会执行一个计算,然后返回结果:</p> <p id="demo"></p> <script>…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h2>JavaScript <b>this</b> 关键字</h2> <p>实例中,<b>this</b>…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script> function validateForm() { var x = document.forms["myForm"]["fname"].value; if (x == null || x == "") { alert("需要输入名字.&…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> var d=new Date(); document.write(d); </script> </body> </html> &…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h2>JavaScript 对象</h2> <p id="demo"></p> <script> functio…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h2>JavaScript HTML DOM!</h2> <p>Hello World!</p> <p>Hello Runoob!&…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h2>JavaScript HTML DOM</h2> <p>Hello World!</p> <p>Hello Runoob!&l…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> var txt = "Hello World!"; document.write(txt.length); </script> &l…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>点击按钮,测试带有 break 语句的循环.</p> <button onclick="myFunction()">点击这里<…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>点击下面的按钮,只要 i 小于 5 就一直循环代码块.</p> <button onclick="myFunction()">点击这…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> cars=["BMW","Volvo","Saab","Ford"]; for (v…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>点击下面的按钮来显示今天是周几:</p> <button onclick="myFunction()">点击这里</butto…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>x=5, 返回 x==8 的比较值结果.</p> <button onclick="myFunction()">尝试一下</b…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p id="demo"></p> <script> var x = 'It\'s alright'; var y = "He…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <button onclick="getElementById('demo').innerHTML=Date()">现在的时间是?</button>…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>局部变量在声明的函数外不可以访问.</p> <p id="demo"></p> <script> myFun…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>测试实例</title> <script> function myFunction() { alert("Hello World!"); } </script> </head> <body> <button onclick=…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> var carname1="Volvo XC60"; var carname2='Volvo XC60'; var answer1='It\'s…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p>点击这里来创建变量,并显示结果.</p> <button onclick="myFunction()">点击这里</butto…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h1>我的网页</h1> <p id="demo">我的第一个段落.</p> <script> document…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p id="demo"></p> <script> document.getElementById("demo").…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h1>我的第一个页面</h1> <p>我的第一个段落.</p> <script> window.alert(5 + 6); <…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h2>为 JSON 字符串创建对象</h2> <p id="demo"></p> <script> var te…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <p>输入数字并点击验证按钮:</p> <input id="id1" type="number" min="100" max="300" required> <…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <head> <script> function validateForm(){ var x=document.forms["myForm"]["fname"…