代码改变世界

.filter(function(index)

2011-12-17 22:15  youxin  阅读(403)  评论(0)  编辑  收藏  举报

注意index是从0开始的，A function used as a test for each element in the set. this is the current DOM element.0-based

 

 

<!DOCTYPE html>
<html>
<head>
  <style>
  div { width:60px; height:60px; margin:5px; float:left;
        border:3px white solid; }
  </style>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
  
  <div id="first"></div>
  <div id="second"></div>
  <div id="third"></div>

  <div id="fourth"></div>
  <div id="fifth"></div>
  <div id="sixth"></div>
<script>
    $("div").css("background", "#b4b0da")
            .filter(function (index) {
                  return index == 1 || $(this).attr("id") == "fourth";
                })
            .css("border", "3px double red"); 、、

change the color of all divs; then add a border to the second one (index == 1) and the div with an id of "fourth."



</script>

</body>
</html>