动态ID的jQuery选择器 [英] JQuery Selector for dynamic id

问题描述

我正在尝试更改Jquery中的图像来源

I am trying to change the image source in the Jquery

<a href="" class="wanted" id="'.$status_id[$num].'"><img src="/images/wanted.png">

通过JQuery选择器:

through a JQuery selector:

$(".wanted "+ id).attr("src", '/images/wanted_.png');

其中id在javascript中定义为php变量$status_id[$num].我首先尝试使用$(this)无济于事.任何见解都会有所帮助.

Where id is defined in the javascript as the php variable $status_id[$num]. I first tried using $(this) to no avail. Any insight would be helpful.

推荐答案

访问$(".wanted"+id)时，实际上是在尝试访问具有类名= wanted + id的元素.这是因为."在想要"之前.另外，您似乎正在直接访问<a>标记并将其设置为src属性.您需要访问<img>标记. 您可以尝试的是这样:

When you access $(".wanted"+id) , you are actually trying to access an element with the class name = wanted+id. This is because of the '.' before 'wanted'. Also, you seem to be accessing the <a> tag directly and setting it's src attribute. You need to access the <img> tag. What you could try is this:

var x=document.getElementById(id);
$(x).find("img")[0].setAttribute("src","/images/wanted_.png");

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