异步加载js--- iframe加载完后 异步加载js
function(jsUrl,cb,async){var head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement;var script = document.createElement( "script" );if( async !== false ){ //异步script.async = "async";script.defer = "defer";}script.src = jsUrl;if(cb){try{script.onload = script.onreadystatechange = function( _eve, isAbort ) {if(isAbort || !script.readyState || /loaded|complete/.test( script.readyState )){// 清除ie状态否则ie版本不同会执行对此回调方法script.onload = script.onreadystatechange = null;script = undefined;if(!isAbort){//!isAbort = (success ok 200)cb();}}};}catch(e){}}head.insertBefore( script, head.firstChild ); }

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var frame = document.getElementById('app_comment_dlg_iframe');frame.onload = frame.onreadystatechange = function(_eve, isAbort) {if (isAbort || !frame.readyState|| /loaded|complete/.test(frame.readyState)) {frame.onload = frame.onreadystatechange = null;frame = undefined;if (!isAbort) {Comment.loadJs(CONST_COMMENT.BSFW_URL+ "/skins/js/messenger.js", function() {var _iframe = document.getElementById('app_comment_dlg_iframe');var messenger = Messenger.initInParent(_iframe);messenger.onmessage = function(data) {var res = eval('(' + data + ')');if (res.res_data) {if (res.is_close) {Comment.closeCommentDlg();alert(res.cause);} else {alert(res.cause);}} else {_iframe.style.height = data + 'px';divContain.style.height = data + 'px';}};});}}};

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