jquery怎么获取某一元素的指定子元素

jquery如何获取某一元素的指定子元素
我想获取如图的不确定个数的img标签下的src，应该怎么写呀？
jquery怎么获取某一元素的指定子元素

------解决思路----------------------

jquery怎么获取某一元素的指定子元素



<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Document</title>

</head>

<body>


    <div id="preview" class="upload_preview">

        <div id="uploadList_0" class="upload_append_list">

            <a class="imgBox" href="#" >

                <div class="uploadImg">

                    <img class="upload_image" src="http://img4.imgtn.bdimg.com/it/u=3973469564,2643885576&fm=15&gp=0.jpg" alt="">

                </div>

            </a>

        </div>

        <div id="uploadList_0" class="upload_append_list">

            <a class="imgBox" href="#" >

                <div class="uploadImg">

                    <img class="upload_image" src="http://img4.imgtn.bdimg.com/it/u=417571815,4029812825&fm=15&gp=0.jpg" alt="">

                </div>

            </a>

        </div>

    </div>


    <script src="http://apps.bdimg.com/libs/jquery/1.6.4/jquery.min.js"></script>

    <script>


        // 1. 通过CSS选择器来定位所有<img>

        var uploadImageList = $("#preview .imgBox .upload_image");


        // 2. 获取所有<img>的src属性值，返回一个jQuery对象(包含所有的src属性值)

        var uploadImageSrcList = uploadImageList.map( function() {

            return this.src;

        } );


        // 3. 将此jQuery对象转化为JS数组

        var uploadImageSrcArray = uploadImageSrcList.toArray();

        

        console.info( uploadImageSrcArray, uploadImageSrcArray instanceof Array ); 



    </script>

</body>

</html>

jquery怎么获取某一元素的指定子元素

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