⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙

代码-JS之点击更换背景 

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<!--编写HTML-->
<table border="1" cellspacing="0" cellpadding="2" rules="all" width="200">
    <tr>
        <td style="background-color: blue;">&nbsp;</td>
        <td style="background-color: brown;">&nbsp;</td>
    </tr>
    <tr>
        <td style="background-color: crimson;">&nbsp;</td>
        <td style="background-color: orange">&nbsp;</td>
    </tr>
</table>
<!--编写JavaScript-->
<script>
    //找到页面中所有的td
    var tds = document.getElementsByTagName('td');
    for(var i=0; i<tds.length; i++){
        //绑定单击事件
        tds[i].onclick = function(){
            //更换背景
            document.body.style.backgroundColor = this.style.backgroundColor;
        };
    }
</script>

</body>
</html>
posted @ 2018-10-18 01:52  羊驼可以吃吗  阅读(275)  评论(0)  编辑  收藏  举报
⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙ ⊙︿⊙