'' && // shendun-eddy 是script的白名单标签 (addedNode.getAttribute('shendun-eddy') !== null || // iframe空src，html2canvas需要iframe做兼容性检测 addedNode.tagName.toLowerCase() === 'iframe') ) { return true; } var isInWhiteList = false; whiteListReg.forEach(function(wlReg) { if (wlReg.test(addedNode.src)) { isInWhiteList = true; return false; } }); return isInWhiteList; }; // dom观察器 var mutationHandler = function(records) { records.forEach(function(record) { var addedNodes = []; // 如果src被动态修改，也要进行监管 if ( record.type.toLowerCase() === 'attributes' && record.attributeName.toLowerCase() === 'src' ) { addedNodes.push(record.target); } else { addedNodes = Array.prototype.slice.call(record.addedNodes); } addedNodes.forEach(function(addedNode) { srcFilterTags.forEach(function(tagName) { // 标签匹配 白名单匹配 if (addedNode.tagName === tagName.toUpperCase() && !inWhileList(addedNode)) { addedNode.remove(); } }); }); }); }; var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver, observeMutationSupport = !!MutationObserver; if (observeMutationSupport) { new MutationObserver(mutationHandler).observe(document.documentElement, { childList: true, subtree: true, // 监视src属性修改 /** * android 4.4.2 需要声明 attributes * 不声明则attributeFilter则报异常 Uncaught SyntaxError: An invalid or illegal string was specified. */ attributes: true, attributeFilter: ['src'] }); } var eleList = document.querySelectorAll('script'); var len = eleList.length; for (var i = 0; i < len; i++) { if (!inWhileList(eleList[i])) { eleList[i].remove(); } } } catch (error) { console.error(error); } if (window.self !== window.top) { alert( '脚本检测到存在劫持的风险,如页面不属于请不予理会!', ); } })(); 
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