[英]How to retrieve the background image url defined in CSS?
Suppose I have a div 假设我有一个div
<div id="div_a" style="background-image:url('xxx')"></div>
Then I can get the url info by using 然后我可以通过使用获取URL信息
document.getElementById("div_a").style.backgroundImage
to get its url info. 以获得其网址信息。
However if the style is defined in CSS the code above would return blank 但是,如果样式是在CSS中定义的,则上面的代码将返回空白
Anything wrong with it? 有什么问题吗?
您正在寻找的是计算样式getComputedStyle
window.getComputedStyle(document.getElementById("div_a"), null).getPropertyValue('background-image')
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