Through the DOM APIs we can access the CSS generated content. We can simply read the value of the CSS content property with JavaScript.

Given the following CSS code:


#test:before {
    content: 'Before ';
}

we can use the getComputedStyle() method as follows:


'use strict';

const getCSSContentValue = (element, where = ':before') => {
    return getComputedStyle(element, where).content;
};