jQuery通过src属性查找元素 [英] jquery find element by src attribute

问题描述

我有一个小画廊(代码只是示例):

I have this small gallery (the code is just example):

<div id="gallery_imgs">
    <img src="http://fc01.deviantart.net/fs71/f/2014/112/0/9/nobody_believes_in_me_by_idjpanda-d7fkd7m.png" />
    <img src="http://fc09.deviantart.net/fs71/f/2014/112/5/6/feed_me_d__by_idjpanda-d7fgids.png" />
    <img src="http://fc02.deviantart.net/fs71/f/2014/104/e/5/blar_auction_by_idjpanda-d7ehmoc.png" />
</div>
<p></p>

JS代码:

var that = $("#gallery_imgs img:eq(1)");
$("p").html($("#gallery_imgs img").find("[src='"+that.attr("src")+"']").length);

此返回0.为什么?这是一个错误，还是我做错了什么?

This return 0. Any idea why? Is this a bug, or what am I doing wrong?

推荐答案

您需要 .filter()

$("p").html($("#gallery_imgs img").filter("[src='"+that.attr("src")+"']").length);

---

您可以通过这种方式使用 .find()

$("p").html($("#gallery_imgs").find("img [src='"+that.attr("src")+"']").length);

---

问题

$("#gallery_imgs img").find("[src='"+that.attr("src")+"']")，您正在尝试查找img元素内src元素，而该元素不在img元素

$("#gallery_imgs img").find("[src='"+that.attr("src")+"']") you are trying to find the element with src inside the img element not within in the img element

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