返回值:jQueryappendTo(target)

Insert every element in the set of matched elements to the end of the target.

The .append() and .appendTo() methods perform the same task. The major difference is in the syntax-specifically, in the placement of the content and target. With .append(), the selector expression preceding the method is the container into which the content is inserted. With .appendTo(), on the other hand, the content precedes the method, either as a selector expression or as markup created on the fly, and it is inserted into the target container.

Consider the following HTML:

<h2>Greetings</h2>
<div class="container">
  <div class="inner">Hello</div>
  <div class="inner">Goodbye</div>
</div>

We can create content and insert it into several elements at once:

$('<p>Test</p>').appendTo('.inner');

Each inner <div> element gets this new content: 

<h2>Greetings</h2>
<div class="container">
  <div class="inner">
    Hello
    <p>Test</p>
  </div>
  <div class="inner">
    Goodbye
    <p>Test</p>
  </div>
</div>

We can also select an element on the page and insert it into another:

$('h2').appendTo($('.container'));

If an element selected this way is inserted elsewhere, it will be moved into the target (not cloned):

<div class="container">
  <div class="inner">Hello</div>
  <div class="inner">Goodbye</div>
  <h2>Greetings</h2>
</div>

If there is more than one target element, however, cloned copies of the inserted element will be created for each target after the first.

示例:

Appends all spans to the element with the ID "foo"

<!DOCTYPE html>
<html>
<head>
<style>#foo { background:yellow; }</style>
<script src="jquery.min.js"></script>
</head>
<body>

<span>I have nothing more to say... </span>

  <div id="foo">FOO! </div>

<script>

$("span").appendTo("#foo"); // check append() examples

</script>
</body>
</html>
演示: