js注入提取伪元素选择器

let timer = setInterval(function () {    if (document.getElementById('divChpContent')) {        var span_list = document.getElementsByTagName("span");        for (var i = 0; i < span_list.length; i++) {            var content = window.getComputedStyle(                span_list[i], ':before'            ).getPropertyValue('content');            span_list[i].innerText = content.replace('"', "").replace('"', "");        }        clearInterval(timer)    }}, 1000)

来源：https://www.cnblogs.com/zhouze/p/11527471.html