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)