map(callback)

jquery.api.3.2.1中文手册

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characters

返回值:jQuery

概述

将一组元素转换成其他数组（不论是否是元素数组）

你可以用这个函数来建立一个列表，不论是值、属性还是CSS样式，或者其他特别形式。这都可以用'$.map()'来方便的建立。

参数

callbackFunctionV1.2

给每个元素执行的函数

示例

描述:

把form中的每个input元素的值建立一个列表。

HTML 代码:

<p><b>Values: </b></p>
<form>
  <input type="text" name="name" value="John"/>
  <input type="text" name="password" value="password"/>
  <input type="text" name="url" value="http://ejohn.org/"/>
</form>

jQuery 代码:

$("p").append( $("input").map(function(){
  return $(this).val();
}).get().join(", ") );

结果:

[ <p>John, password, http://ejohn.org/</p> ]

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