如果具有特定的类或ID，则将查询字符串添加到Image Source（img src）

Question

I want this in either PHP or JS. Its like, if img has particular class them a query string will be appended to its source url. Lets assume, the particular class is 'hello' & query string is '?source=fb' So, if img has class 'hello' -

<img class="hello" src="http://example.com/1.jpg?source=fb">

The PHP should check & append it to the img src.

Any function that can do this?

Answer 1

$('img.hello').attr('src',$('img.hello').attr('src')+"addedstring")

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img class="hello" src="http://example.com/1.jpg?source=fb">

Use like this

</div>