提取字符串之间的文本-JavaScript

Question

I have a string:

<iframe src="keep-url" width="125" height="290" frameborder="0" scrolling="no"></iframe>

I want to remove all except:

keep-url

and using Javascript, jquery, with jsfiddle
Thank you.

Answer 1

You don't need to extract text from the string, you can get the src attribute from the element:

 var src = $('<iframe src="keep-url" width="125" height="290" frameborder="0" scrolling="no"></iframe>').attr('src'); console.log(src); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

Answer 2

使用jQuery创建元素（不添加到文档中）并获取属性：

$src = $(theString).attr('src');