props:组建初始要渲染的数据,他是不可以改变的 state:组建状态发生改变,调用render重新渲染数据 我们来写一个例子: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react.js">&l…
提示:props的值是不可以改变的... <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react.js"></script> <script src="./js/react…
<!DOCTYPE> <html> <head> <meta charset="utf-8"> <title></title> <script src="./js/react.js"></script> <script src="./js/react-dom.js"></script> <script src="…
<!DOCTYPE> <html> <head> <meta charset="utf-8"> <title></title> <script src="./js/react.js"></script> <script src="./js/react-dom.js"></script> <script src="…
先写一个组建... 然后进行嵌套.. <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react-with-addons.js"></script> <script src="…
比如我们要实现的是这种效果: 用这种方法来写,她只能写死在哪,没啥意思,所以我们定义一个数据,然后来测试下map方法对她遍历出来的数据 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react-with-addons.…
首先要引入她.. <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react-with-addons.js"></script> <script src="./js/react…
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react.js"></script> <script src="./js/react-dom.js"><…
提示:props的值是不可以改变的... <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react.js"></script> <script src="./js/react…
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="./js/react.js"></script> <script src="./js/react-dom.js"><…