jquery 遍历 add(expr)

add(expr)

对当前匹配元素集合增加新的匹配元素集合‘expr’,形成新的匹配元素集合

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
                    "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
  
  <script>
  $(document).ready(function(){
    
    $("div").css("border", "2px solid red")
            .add("p")
            .css("background", "yellow");

  });
  </script>
  <style>
  div { width:60px; height:60px; margin:10px; float:left; }
  p { clear:left; font-weight:bold; font-size:16px; 
      color:blue; margin:0 10px; padding:2px; }
  </style>
</head>
<body>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <p>Added this... (notice no border)</p>
</body>
</html>

 

$("div").css("border", "2px solid red")
     .add("p")
     .css("background", "yellow");

对div元素集合增加p元素集合,形成新的元素集合。以下是新的元素集合
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<p>Added this... (notice no border)</p>

 

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