学生党~想请教些问题~！代码如下想实现td背景自动变色不用鼠标事件

javascript

解决方案 »

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用css
td:hover {
background:#000;
}
window.setTimeout(function(){td.style.color='red'},100)?
自动变色是什么意思啊
试试这个setInterval<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <title>无标题文档</title>
    <style type="text/css">
    *{margin:0;}
    table,td {
    border:none;
    }
    #fix{ background:#F00!important;}
    </style>
  </head>
  <body>
    <table width="500" height="500" border="1">
      <tr>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
      </tr>
      <tr>
        <td> </td>
        <td> </td>
        <td id="fix"> </td>
        <td> </td>
        <td> </td>
      </tr>
      <tr>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
      </tr>
      <tr>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
      </tr>
      <tr>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
        <td> </td>
      </tr>
    </table>
    <script type="text/javascript">
    var aTd = document.getElementsByTagName("table")[0].getElementsByTagName("td");

    window.setInterval(function(){ for(var i = 0; i < aTd.length; i++){

    var iR = Math.floor(256 * Math.random());
    var iG = Math.floor(256 * Math.random());
    var iB = Math.floor(256 * Math.random());
    aTd[i].style.backgroundColor = "rgb(" + iR + "," + iG + "," + iB + ")";
    }},1000);
    </script>
  </body>
</html>