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返回值:jQuery
prepend(content)
概述
向每个匹配的元素内部前置内容。
这是向所有匹配元素内部的开始处插入内容的最佳方式。
参数
contentString, Element, jQueryV1.0
要插入到目标元素内部前端的内容
function(index, html)FunctionV1.4
返回一个HTML字符串，用于追加到每一个匹配元素的里边。接受两个参数，index参数为对象在这个集合中的索引值，html参数为这个对象原先的html值。
示例
描述:
向所有段落中前置一些HTML标记代码。
HTML 代码:
<p>I would like to say: </p>
jQuery 代码:
$("p").prepend("<b>Hello</b>");结果:
[ <p><b>Hello</b>I would like to say: </p> ]
描述:
将一个DOM元素前置入所有段落
HTML 代码:
<p>I would like to say: </p> <p>I would like to say: </p> <b class="foo">Hello</b> <b class="foo">Good Bye</b>
jQuery 代码:
$("p").prepend( $(".foo")[0] );结果:
<p><b class="foo">Hello</b>I would like to say: </p> <p><b class="foo">Hello</b>I would like to say: </p> <b class="foo">Good Bye</b>
描述:
向所有段落中前置一个jQuery对象(类似于一个DOM元素数组)。
HTML 代码:
<p>I would like to say: </p><b>Hello</b>
jQuery 代码:
$("p").prepend( $("b") );结果:
<p><b>Hello</b>I would like to say: </p>