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jQuery : eq() vs get()

`.get(index)` and `.eq(index)`

both return a single "element" from a jQuery object array, but they return the single element in different forms.

.eq(index)

returns it as a jQuery object, meaning the DOM element is wrapped in the jQuery wrapper, which means that it accepts jQuery functions.

.get(index)

return a raw DOM element. You may manipulate it by accessing its attributes and invoking its functions as you would on a raw DOM element. But it loses its identity as a jQuery-wrapped object, so a jQuery function won't work.

简言之：eq()获取的是jquery对象，能够使用jquery方法，get()获取的是原生dom元素，不能使用jquery方法．

Example：

 1 <!DOCTYPE html>
 2 <html lang="en">
 3   <head>
 4     <meta charset="utf-8">
 5     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 6     <meta name="viewport" content="width=device-width, initial-scale=1">
 7     <title>eq() And get()</title>
 8   </head>
 9   <body style="height:2000px;">
10     <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
11     <div id="outer_div">
12       <div>
13         <input text value="AAA"><br>
14         <input text value="BBB"><br>
15         <input text value="CCC"><br>
16         <input text value="DDD"><br>
17       </div>
18     </div>
19     <script>
20         $(document).ready(function(){
21           var $inputEq = $('#outer_div').find("input").eq(2);
22           var $inputGet = $('#outer_div').find("input").get(2);
23           console.log("inputEq :"+$inputEq);
24           console.log("inputGet:"+$inputGet);
25           console.log("inputEqValue :"+$inputEq.val());
26           console.log("inputGetValue :"+$inputGet.value);
27         });
28         // Results:
29         /*
30           inputEq :[object Object]
31           inputGet:[object HTMLInputElement]
32           inputEqValue :CCC
33           inputGetValue :CCC
34         */
35     </script>
36   </body>
37 </html>

相关：

.eq()

.eq( index )
.eq( indexFromEnd )

<ul>
  <li>list item 1</li>
  <li>list item 2</li>
  <li>list item 3</li>
  <li>list item 4</li>
  <li>list item 5</li>
</ul>
$( "li" ).eq( 2 ).css( "background-color", "red" );
$( "li" ).eq( -2 ).css( "background-color", "blue" );

:eq() Selector

jQuery( ":eq(index)" )
jQuery( ":eq(-index)" )

.get()

.get( index )

1 <ul>
2   <li id="foo">foo</li>
3   <li id="bar">bar</li>
4 </ul>
5 console.log( $( "li" ).get( 0 ) );

.get()

Retrieve the elements matched by the jQuery object.
All of the matched DOM nodes are returned by this call, contained in a standard array.

1 <ul>
2   <li id="foo">foo</li>
3   <li id="bar">bar</li>
4 </ul>
5 // javascript
6 console.log( $( "li" ).get() );
7 // result
8 [<li id="foo">, <li id="bar">]

查看全文

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原文地址：https://www.cnblogs.com/hzj680539/p/5073946.html

jQuery : eq() vs get()

.get(index) and .eq(index)

`.get(index)` and `.eq(index)`