{"id":2229,"date":"2012-02-29T12:41:01","date_gmt":"2012-02-29T04:41:01","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229"},"modified":"2017-12-06T22:37:07","modified_gmt":"2017-12-06T14:37:07","slug":"html5-web-messaging-cross-document-messaging-channel-messaging","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2012\/02\/html5-web-messaging-cross-document-messaging-channel-messaging\/","title":{"rendered":"HTML5 postMessage iframe\u8de8\u57dfweb\u901a\u4fe1\u7b80\u4ecb"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a><br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229<\/a><\/p>\n<h3>\u4e00\u3001\u7b80\u5355\u6982\u8981<\/h3>\n<p>web\u901a\u4fe1\uff08\u6d0b\u540d\uff1aweb messaging\uff09\u662f\u4e00\u79cd\u6587\u6863\u4e2d\u72ec\u7acb\u7684\u6d4f\u89c8\u4e0a\u4e0b\u6587\u95f4\u7684DOM\u4e0d\u4f1a\u88ab\u6076\u610f\u7684\u8de8\u57df\u811a\u672c\u66b4\u9732\u6570\u636e\u5206\u4eab\u65b9\u5f0f\u3002<\/p>\n<p>\u5f97\u5f97\u5f97\uff0c\u672f\u8bed\u554a\u4ec0\u4e48\u7684\uff0c\u6bd4\u770b\u5230\u51e4\u59d0\u8fd8\u5934\u75bc\u3002\u6709\u5fc5\u8981\u628a\u4e0a\u9762\u4e00\u53e5\u8bdd\u62c6\u5f00\u8bb2\uff1a<\/p>\n<ul>\n<li>web\u901a\u4fe1\u662f\u4e00\u79cd\u6570\u636e\u5206\u4eab\u65b9\u5f0f\uff08\u6709\u5c41\u8bdd\u4e4b\u5acc\uff09\uff1b<\/li>\n<li>\u901a\u4fe1\u7684\u4e3b\u4f53\u662f\u201c\u6d4f\u89c8\u4e0a\u4e0b\u6587\u201d\uff08\u8fd9\u662f\u7eb3\u5c3c\uff1f\uff09\uff1b<\/li>\n<li>\u54e6\uff0c\u201c\u6d4f\u89c8\u4e0a\u4e0b\u6587\u201d\u5462\u662f\u201c\u4e00\u4e2a\u5c06 <a href=\"http:\/\/www.w3.org\/html\/ig\/zh\/wiki\/HTML5\/infrastructure#document\">Document <\/a>\u5bf9\u8c61\u5448\u73b0\u7ed9\u7528\u6237\u7684\u73af\u5883\u201d\uff0c\u4f60\u53ef\u4ee5\u8fd1\u4f3c\u7406\u89e3\u4e3a\u5e73\u5e38\u6211\u4eec\u770b\u5230\u7684\u67d0\u4e2a\u9875\u9762\u6240\u5904\u7684\u73af\u5883\uff1b<\/li>\n<li>web\u901a\u4fe1\u4e0d\u4f1a\u6709DOM\u88ab\u6076\u610f\u66b4\u9732\u7684\u5371\u9669\uff1b<\/li>\n<li>\u76ee\u524d\u5e94\u7528\u6bd4\u8f83\u591a\u7684\u5c31\u662fiframe\u4e4b\u95f4\u7684\u901a\u4fe1\uff08\u8fd9\u662f\u6211\u81ea\u4e2a\u513f\u989d\u5916\u52a0\u7684<img decoding=\"async\" title=\"\u6324\u773c\" alt=\"\u6324\u773c\" src=\"http:\/\/img.t.sinajs.cn\/t35\/style\/images\/common\/face\/ext\/normal\/c3\/zy_thumb.gif\" style=\"margin-bottom:-3px;\" \/>\uff09\u3002<\/li>\n<\/ul>\n<p>\u5f53\u6211\u4eec\u8c08\u8bbaweb\u901a\u4fe1\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u8c08\u8bba\u7684\u662f\u4e24\u4e2a\u7565\u6709\u4e0d\u540c\u7684\u7cfb\u7edf\uff1a<strong>\u8de8\u6587\u6863\u901a\u4fe1(cross-document messaging)<\/strong>\u548c<strong>\u901a\u9053\u901a\u4fe1(channel messaging)<\/strong>\u3002\u8de8\u6587\u6863\u901a\u4fe1\u5c31\u662f\u6211\u4eec\u56fd\u5185\u66f4\u4e3a\u719f\u77e5\u7684HTML5 window.postMessage()\u5e94\u7528\u7684\u90a3\u79cd\u901a\u4fe1\uff1b\u901a\u9053\u901a\u4fe1\u4e5f\u88ab\u79f0\u4e3a&#8221;MessageChannel&#8221;. \u4f34\u968f\u7740server-sent\u4e8b\u4ef6\u4ee5\u53ca<a href=\"http:\/\/dev.opera.com\/articles\/tags\/web%20sockets\">web sockets<\/a>, \u8de8\u6587\u6863\u901a\u4fe1\u548c\u901a\u9053\u901a\u4fe1\u6210\u4e3aHTML5 \u901a\u4fe1\u63a5\u53e3\u201c\u5957\u4ef6\u201d\u4e2d\u6709\u7528\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p><strong>\u6d4f\u89c8\u5668\u652f\u6301(\u81f32012-02-27)<\/strong><br \/>\nweb\u901a\u4fe1\u5df2\u7ecf\u88abOpera, Chrome, Safari\u652f\u6301\uff0c\u5c3d\u7ba1Safari\u2264 5.1.2\u7684\u7248\u672c<a href=\"https:\/\/bugs.webkit.org\/show_bug.cgi?id=63141\">\u6709bug<\/a>. IE8 \u90e8\u5206\u652f\u6301\u8de8\u6587\u6863\u901a\u4fe1\uff1a\u53ea\u80fd\u548ciframe\u901a\u4fe1\uff0c\u4e0d\u652f\u6301\u65b0\u7a97\u53e3\u901a\u4fe1\u3002IE10 \u5c06\u652f\u6301\u901a\u9053\u901a\u4fe1\u3002FireFox\u76ee\u524d\u652f\u6301\u8de8\u6587\u6863\u4fe1\u606f\uff0c\u4f46\u662f\u5e76\u4e0d\u652f\u6301\u901a\u9053\u901a\u4fe1\u3002<\/p>\n<p><strong>\u6d4f\u89c8\u5668\u652f\u6301(\u81f32013-04-24)<\/strong><br \/>\nFireFox 20\u76ee\u524d\u4ecd\u7136\u4e0d\u652f\u6301\u901a\u9053\u901a\u4fe1\uff0cIE10\u786e\u8ba4\u652f\u6301\u901a\u9053\u901a\u4fe1\u3002<\/p>\n<h3>\u4e8c\u3001\u901a\u4fe1\u4e8b\u4ef6<\/h3>\n<p>\u8fd9\u91cc\u8981\u5148\u4ecb\u7ecd\u4e0b<code>message<\/code>\u4e8b\u4ef6\u5bf9\u8c61\u3002\u4e3a\u4f55\uff1f<\/p>\n<p>\u56e0\u4e3a\uff0c\u65e0\u8bba\u662f\u8de8\u6587\u6863\u901a\u4fe1(cross-document messaging)\u3001\u901a\u9053\u901a\u4fe1(channel messaging)\u3001\u670d\u52a1\u5668\u53d1\u9001\u4e8b\u4ef6(server-sent events)\u6216\u662f\u7f51\u7edc\u5957\u63a5\u5b57(web sockets)\u90fd\u8981\u6267\u884c<code>message<\/code>\u4e8b\u4ef6\u3002\u56e0\u6b64\u7406\u89e3\u4e4b\u65f6\u5f88\u6709\u5e2e\u52a9\u6ef4\u3002\u5c31\u50cf\u662f\u4f60\u65e0\u8bba\u8981\u5a36\u5fd7\u6797\u59d0\u8fd8\u662f\u201c\u98ce\u53c9\u53d8\u4eba\u201d\u59d0\uff0c\u90fd\u8981\u8fc7\u4f60\u5988\u8fd9\u5173\uff0c\u56e0\u6b64\uff0c\u4e86\u89e3\u4f60\u5988\u7684\u504f\u597d\u5c31\u5f88\u6709\u5e2e\u52a9\u5566\uff01<\/p>\n<p>Message\u4e8b\u4ef6\u7684\u5b9a\u4e49\u53ef\u53c2\u89c1<a href=\"http:\/\/dev.w3.org\/html5\/postmsg\/#event-definitions\">\u8fd9\u91cc<\/a>\uff08\u6b64\u94fe\u63a5\u5efa\u8bae\u4e0d\u7528\u70b9\uff0c\u82f1\u6587+\u672f\u8bed\u2192\u5927\u5934\u513f\u5b50\uff09\uff0c\u8be5\u4e8b\u4ef6\u5305\u542b5\u4e2a\u53ea\u8bfb\u5c5e\u6027\uff1a<\/p>\n<table width=\"100%\" border=\"0\" cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<tr>\n<th scope=\"row\">data<\/th>\n<td>\u5305\u542b\u4efb\u610f\u5b57\u7b26\u4e32\u6570\u636e\uff0c\u7531\u539f\u59cb\u811a\u672c\u53d1\u9001<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">origin<\/th>\n<td>\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5305\u542b\u539f\u59cb\u6587\u6863\u7684\u65b9\u6848\u3001\u57df\u540d\u4ee5\u53ca\u7aef\u53e3(\u5982\uff1ahttp:\/\/domain.example:80)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">lastEventId<\/th>\n<td>\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5305\u542b\u4e86\u5f53\u524d\u7684\u6d88\u606f\u4e8b\u4ef6\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">source<\/th>\n<td>\u539f\u59cb\u6587\u4ef6\u7684\u7a97\u53e3\u7684\u5f15\u7528\u3002\u66f4\u786e\u5207\u5730\u8bf4\uff0c\u5b83\u662f\u4e00\u4e2a<a href=\"http:\/\/www.whatwg.org\/specs\/web-apps\/current-work\/multipage\/browsers.html#windowproxy\">WindowProxy\u5bf9\u8c61<\/a>\u3002<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">ports<\/th>\n<td>\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u542b\u4efb\u4f55<a href=\"http:\/\/dev.w3.org\/html5\/postmsg\/#messageport\">MessagePort<\/a>\u5bf9\u8c61\u53d1\u9001\u6d88\u606f\u3002<\/td>\n<\/tr>\n<\/table>\n<p>\u5728\u8de8\u6587\u6863\u901a\u4fe1\u548c\u901a\u9053\u901a\u4fe1\u4e2d\uff0c<code>lastEventId<\/code>\u7684\u503c\u4e00\u822c\u662f\u4e2a\u7a7a\u5b57\u7b26\u4e32\uff1b<code>lastEventId<\/code>\u5e94\u7528\u5728\u670d\u52a1\u5668\u7aef\u53d1\u9001\u4e8b\u4ef6\u4e0a\u3002\u53d1\u9001\u4fe1\u606f\u4e2d\u5982\u679c\u6ca1\u6709ports, \u5219<code>ports<\/code>\u5c5e\u6027\u503c\u5c31\u662f\u4e2a\u957f\u5ea6\u4e3a0\u7684\u6570\u7ec4\u3002<\/p>\n<p><code>MessageEvent<\/code>\u7ee7\u627fDOM<a href=\"http:\/\/dvcs.w3.org\/hg\/domcore\/raw-file\/tip\/Overview.html#interface-event\">\u4e8b\u4ef6\u63a5\u53e3<\/a>\uff0c\u4e14\u5c5e\u6027\u5171\u4eab\u3002\u7136\u800c\uff0c\u901a\u4fe1\u4e8b\u4ef6\u5e76\u6ca1\u6709\u5192\u6ce1\uff0c\u4e0d\u80fd\u53d6\u6d88\uff0c\u4e5f\u6ca1\u6709\u9ed8\u8ba4\u884c\u4e3a\u3002<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/maopao.gif\" title=\"\u5192\u6ce1\" width=\"36\" height=\"36\" \/><\/p>\n<h3>\u4e09\u3001\u8de8\u6587\u6863\u901a\u4fe1<\/h3>\n<p>\u8de8\u6587\u6863\u901a\u4fe1\u7684\u4f7f\u7528\u8ddf\u6211\u4eec\u5e73\u65f6\u5b9e\u9645\u751f\u6d3b\u4e2d\u7684\u90ae\u4ef6\u63a5\u6536\u7b49\u7c7b\u4f3c\u3002\u53d1\u9001\u2192\u63a5\u6536\u3002<\/p>\n<p>\u6587\u5b57\u5316\u7684\u63cf\u8ff0\u4e0d\u5229\u4e8e\u7406\u89e3\u3002\u6240\u4ee5\uff0c\u5148\u4ece\u4e00\u4e2a\u4f8b\u5b50\u5f00\u59cb\u5427\u3002<\/p>\n<p>\u4f8b\u5b50\u5f88\u7b80\u5355\uff0c\u9875\u9762\u4e0a\u4e24\u4e2aiframe\u6846\u67b6\uff0c\u5de6\u4fa7\u7684\u53ef\u4ee5\u8f93\u5165\u4fe1\u606f\uff0c\u70b9\u51fb\u786e\u8ba4\u6309\u94ae\u540e\uff0c\u8f93\u5165\u7684\u4fe1\u606f\u53ef\u4ee5\u5728\u53f3\u4fa7\u7684iframe\u4e2d\u663e\u793a\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201202\/web-messing-cross-document-messaging-two-iframe.html\">\u4e24\u4e2aiframe\u4e4b\u95f4\u7684\u8de8\u6587\u6863\u901a\u4fe1demo<\/a><\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u5728\u5de6\u4fa7\u8f93\u5165\u201c\u767d\u9759\u88ab\u5bb3\u201d\uff0c\u70b9\u51fb\u6309\u94ae\u540e\uff0c\u53f3\u4fa7\u5c31\u6709\u5bf9\u5e94\u663e\u793a\uff0c\u53c2\u89c1\u4e0b\u9762\u622a\u56fe\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\u4e24\u4e2aiframe\u4e4b\u95f4\u7684\u8de8\u6587\u6863\u901a\u4fe1 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-28_233325.png\" title=\"\u4e24\u4e2aiframe\u4e4b\u95f4\u7684\u8de8\u6587\u6863\u901a\u4fe1\" class=\"alignnone\" width=\"570\" height=\"220\" \/><\/p>\n<p>\u4e0a\u9762\u5df2\u7ecf\u63d0\u8fc7\uff0c\u8de8\u6587\u6863\u901a\u4fe1\u88abIE8+\u6d4f\u89c8\u5668\u652f\u6301\uff0c\u56e0\u6b64\uff0c\u672cdemo\u5728IE8\u6d4f\u89c8\u5668\u4e0b\u4e5f\u662f\u6709\u6548\u679c\u6ef4\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"IE8\u4e0b\u8de8\u6587\u6863\u901a\u4fe1\u6548\u679c \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-28_233709.png\" title=\"IE8\u4e0b\u8de8\u6587\u6863\u901a\u4fe1\u6548\u679c \" class=\"alignnone\" width=\"513\" height=\"219\" \/><\/p>\n<p>OK\uff0c\u4e0a\u9762\u4f8b\u5b50\u7b80\u5355\u5f88\uff0c\u53d1\u9001\u4ee5\u53ca\u63a5\u6536\uff01<\/p>\n<p>\u53d1\u9001\u6838\u5fc3JS\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>window.parent.frames[1].postMessage(message, '*');<\/pre>\n<\/div>\n<p><strong>\u8bf4\u660e\uff1a<\/strong><\/p>\n<ol>\n<li><code>window.parent.frames[1]<\/code>\u6307\u7684\u5c31\u662fdemo\u6b63\u9875\u4e2d\u7684\u7b2c\u4e8c\u4e2aiframe. \u7136\u540e\u4f7f\u7528<code>postMessage<\/code>\u65b9\u6cd5\u53d1\u9001\u6570\u636e\u3002<\/li>\n<li><code>postMessage<\/code>\u65b9\u6cd5\u652f\u6301\u4e24\u4e2a\u53c2\u6570\uff0c\u5177\u4f53\u53c2\u8003\u4e0b\u8868\uff1a<br \/>\n<table width=\"100%\" border=\"0\" cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<tr>\n<th scope=\"row\">message<\/th>\n<td>\u53d1\u9001\u7684\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">targetOrigin<\/th>\n<td>\u53d1\u9001\u6570\u636e\u7684\u6765\u6e90\u3002<\/td>\n<\/tr>\n<\/table>\n<p><span style=\"color:#666;\">\u5176\u5b9e\u8fd8\u6709\u4e2a\u53ef\u9009\u7684\u7b2c\u4e09\u53c2\u6570<code><strong>transfer<\/strong><\/code>\uff0c\u4e0d\u8fc7\u7528\u5728\u901a\u9053\u901a\u4fe1\u4e2d\uff0c\u8fd9\u4e2a\u653e\u5728\u540e\u9762\u8bb2\u3002<\/span><\/p>\n<p><code>postMessage<\/code>\u65b9\u6cd5\u4e2d\u7684<code>message<\/code>\u53c2\u6570\u4e0d\u4ec5\u4ec5\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\uff0c\u7ed3\u6784\u5bf9\u8c61\u3001\u6570\u636e\u5bf9\u8c61(\u5982\uff1a<code>File<\/code>\u548c<code>ArrayBuffer<\/code>)\u6216\u662f\u6570\u7ec4\u90fd\u662f\u53ef\u4ee5\u7684\u3002\u5f88\u5389\u5bb3\u5427\uff0c\u4e0d\u8fc7\u9057\u61be\u7684\u662f\uff0cIE8\/IE9\/FireFox3.6\u53ca\u5176\u4ee5\u4e0b\u7248\u672c\u53ea\u652f\u6301\u5b57\u7b26\u4e32\u6570\u636e\u3002<\/p>\n<p><code>targetOrigin<\/code>\u53c2\u6570\u6307\u63a5\u6536\u6587\u6863\u7684\u6765\u6e90\u3002\u9664\u975e\u63a5\u6536\u4fe1\u606f\u6d4f\u89c8\u4e0a\u4e0b\u6587\u6765\u6e90\u4e8e\u63d0\u4f9b\u7684<code>targetOrigin<\/code>\u4e2d\u7684\u4e00\u4e2a\u5339\u914d\uff0c\u5426\u5219\u6d4f\u89c8\u5668\u662f\u4e0d\u4f1a\u53d1\u9001\u6d88\u606f\u7684\u3002\u5f53\u7136\uff0c\u60a8\u53ef\u4ee5\u50cf\u4e0a\u9762\u7684demo\u4e00\u6837\uff0c\u7ed5\u5f00\u8fd9\u7c7b\u9650\u5236\uff0c\u76f4\u63a5\u4f7f\u7528<code>\"*\"<\/code>\u901a\u914d\u7b26\uff0c\u4f46\u663e\u7136\uff0c\u8fd9\u662f\u628a\u4e3b\u516c\u66b4\u9732\u5728\u53cd\u8d3c\u7684\u5200\u53e3\u4e4b\u4e0b\u554a\uff08\u4e0d\u5b89\u5168\u7684\u4fe1\u606f\u6cc4\u9732\uff09\u3002\u672cdemo\u4e3a\u4e86\u4fbf\u4e8e\u7406\u89e3\uff0c\u53bb\u9664\u4e0d\u5fc5\u8981\u7684\u5e72\u6270\uff0c\u6240\u4ee5\u624d\u4f7f\u7528\u4e86<code>\"*\"<\/code>\u901a\u914d\u7b26\uff0c\u60a8\u5728\u5b9e\u9645\u4f7f\u7528\u7684\u65f6\u5019\u52a1\u5fc5\u6307\u5b9a\u76ee\u6807\u6765\u6e90\u3002<\/li>\n<li>\u60a8\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528<code>\"\/\"<\/code>\u6765\u9650\u5236\u4fe1\u606f\u53ea\u80fd\u540c\u6e90\u53d1\u9001\u3002\u4e0d\u8fc7\uff0c\u5728\u6587\u5b57\u843d\u6210\u7684\u8fd9\u4e2a\u65f6\u5019\uff0c\u53ea\u6709Opera\u6d4f\u89c8\u5668\u652f\u6301\u4e4b\u3002<\/li>\n<li>\u8fd8\u6709\u4e00\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u5c31\u662f\u5076\u4eec\u6307\u5b9a\u6765\u6e90\u7684\u65f6\u5019\uff0c\u540e\u9762\u4e0d\u8981\u5e26\u4e0a\u659c\u6760\u3002\u4e5f\u5c31\u662f\u8981\u4f7f\u7528\uff1a\n<div class=\"zxx_code\">\n<pre>window.postMessage('\u53d1\u9001\u4fe1\u606f\u3002','http:\/\/example.zhangxinxu.com');<\/pre>\n<\/div>\n<p>\u800c\u4e0d\u662f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre><del datetime=\"2012-02-28T13:53:54+00:00\">window.postMessage('\u53d1\u9001\u4fe1\u606f\u3002','http:\/\/example.zhangxinxu.com\/');<\/del><\/pre>\n<\/div>\n<\/li>\n<\/ol>\n<p><strong>\u8de8\u6587\u6863\u7684\u6d4f\u89c8\u5668\u7a97\u4f53\u901a\u4fe1<\/strong><br \/>\n\u4e0a\u9762\u7684demo\u5b9e\u5728\u4e00\u4e2a\u6587\u6863\u9875\u9762\u5185\u5b8c\u6210\u7684\u3002\u5b9e\u9645\u4e0a\u8de8\u6587\u6863\u901a\u4fe1\u4e5f\u53ef\u4ee5\u5728\u4e0d\u540c\u7a97\u4f53\u4e4b\u95f4\u5b8c\u6210\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201202\/web-messing-cross-document-messaging-window.html\">\u4e0d\u540c\u7a97\u4f53\u95f4\u7684\u8de8\u6587\u6863\u901a\u4fe1demo<\/a><\/p>\n<p>\u5728\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0b\uff0c\u70b9\u51fb\u7537\u751f\u6216\u5973\u751f\u6309\u94ae\uff08\u4f8b\u5982\u70b9\u51fb\u7537\u751f\u6309\u94ae\uff09\uff0c\u6253\u5f00\u7684\u65b0\u9875\u9762\u5b50\u554a2\u79d2\u540e\u663e\u793a\u4e86\u5bf9\u5e94\u7684\u901a\u4fe1\u4fe1\u606f\u3002\u5982\u4e0b\u622a\u56fe\u5c55\u793a\uff08\u622a\u81eaFireFox 10\uff09\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-29_004704.png\" title=\"\u70b9\u51fb\u7537\u751f\u6309\u94ae\" class=\"alignnone\" width=\"322\" height=\"176\" \/> <img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-29_004741.png\" title=\"\u663e\u793a\u5bf9\u4e8e\u4fe1\u606f\" class=\"alignnone\" width=\"465\" height=\"160\" \/><\/p>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u4e0d\u4ec5\u4ec5\u5c55\u793a\u4e86\u7a97\u53e3\u89c1\u7684\u901a\u4fe1\uff0c\u8fd8\u6709\u4e00\u70b9\u5f88\u91cd\u8981\u7684\uff0c\u5c31\u662f\u5c55\u793a\u4e86\u7279\u5b9a\u65f6\u95f4\u63a7\u5236\u7a97\u4f53\u4fe1\u606f\u7684\u53d1\u9001\u3002<\/p>\n<p>demo\u4e3b\u9875\u9762\u6709\u4e2a\u540d\u4e3a<code>message<\/code>\u7684\u5168\u5c40\u53d8\u91cf\uff0c\u5f53\u70b9\u51fb\u7537\u751f\u6309\u94ae\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u53d8\u91cf\u503c\u53d8\u6210\u201c<code>\u6211\u662f\u7537\u751f\uff0c\u5e05\u6c14\u7684\u7537\u751f\uff01<\/code>\u201d\uff1b\u70b9\u51fb\u5973\u751f\u6309\u94ae\u5219\u662f\u201c\u6211\u662f\u5973\u751f\uff0c\u6f02\u4eae\u7684\u5973\u751f\uff01\u201d\u3002\u6d88\u606f\u7684\u53d1\u9001\u6765\u81ea\u6536\u5230\u6253\u5f00\u9875\u9762\u7684<code>'ready'<\/code>\u901a\u4fe1\u4fe1\u606f\u3002<\/p>\n<p>\u4ee3\u7801\u7a0d\u7a0d\u957f\u4e86\u70b9\uff0c\u8fd9\u91cc\u5c31\u4e0d\u5c55\u793a\u4e86\u3002\u4e3bdemo\u9875\u9762JS\u4ee3\u7801\u90fd\u6709\uff0c\u4e14\u9ad8\u4eae\u663e\u793a\u4e86\uff0c\u6709\u4e2d\u6587\u6ce8\u91ca\uff0c\u76f8\u4fe1\u4e0d\u96be\u7406\u89e3\u7684\u3002<\/p>\n<p>\u672c\u6765\u8fd8\u60f3\u4e3e\u4e2a\u5b9e\u9645\u5e94\u7528\u7684\u4f8b\u5b50\uff0c\u4f8b\u5982iframe\u9ad8\u5ea6\u81ea\u9002\u5e94\u95ee\u9898\u3002\u4e0d\u8fc7\uff0c\u4e00\u662f\u61d2\uff1b\u4e8c\u662f\u62c5\u5fc3\u8eb2\u5f97\u6df1\u4e0d\u6613\u53d1\u73b0\u3002\u8fd9\u91cc\u8d5e\u5148\u514d\u4e86\u3002\u6709\u7cbe\u529b\u7684\u65f6\u5019\u53ef\u4ee5\u4e13\u95e8\u8bf4\u8bf4\u3002<\/p>\n<p>\u672c\u6587\u4e00\u5f00\u59cb\u5c31\u63d0\u8fc7\uff0cIE8\u4e0d\u652f\u6301\u7a97\u4f53\u901a\u4fe1\uff0c\u4f46\u662f\uff0c\u7ec6\u5fc3\u7684\u4f60\u53ef\u80fd\u53d1\u73b0IE9\u6d4f\u89c8\u5668\u4e0b\u4e5f\u6ca1\u6709\u6548\u679c\u3002\u5230\u4e0d\u662f\u522b\u7684\uff0c\u800c\u662f\u8c8c\u4f3cIE9\u8fd8\u6ca1\u6709\u63d0\u4f9b<code>e.currentTarget.opener<\/code>\u63a5\u53e3\uff0c\u4f7f\u5f97demo\u778c\u7761\u53bb\u4e86\u3002<\/p>\n<div class=\"hidden\"><em>\u5982\u679c\u60a8\u770b\u5230\u4e0b\u9762\u7684\u6587\u5b57\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u5728\u5176\u4ed6\u7f51\u7ad9\u6216\u662fRSS\u4e2d\u9605\u8bfb\u672c\u6587\uff0c\u672c\u6587\u539f\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229<\/a>\uff0c\u672c\u6587\u4f5c\u8005\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/\">\u5f20\u946b\u65ed<\/a>\uff0c\u6765\u81ea\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\uff0c\u8bbf\u95ee\u539f\u51fa\u5904\u66f4\u591a\u7cbe\u5f69\u5185\u5bb9\u3002<\/em><\/div>\n<h3>\u56db\u3001\u901a\u9053\u901a\u4fe1<\/h3>\n<p>\u6d88\u606f\u901a\u9053\u63d0\u4f9b\u4e86\u4e00\u4e2a\u76f4\u63a5\uff0c\u53cc\u5411\u6d4f\u89c8\u4e0a\u4e0b\u6587\u4e4b\u95f4\u7684\u901a\u4fe1\u624b\u6bb5\u3002\u8ddf\u8de8\u6587\u6863\u901a\u4fe1\u4e00\u6837\uff0cDOM\u4e0d\u76f4\u63a5\u66b4\u9732\u3002\u53d6\u800c\u4ee3\u4e4b\uff0c\u7ba1\u9053\u6bcf\u7aef\u4e3a\u7aef\u53e3\uff0c\u6570\u636e\u4ece\u4e00\u4e2a\u7aef\u53e3\u53d1\u9001\uff0c\u53e6\u4e00\u4e2a\u53d8\u6210\u8f93\u5165\uff08\u53cd\u4e4b\u4ea6\u7136\uff09\u3002<\/p>\n<p>\u6d88\u606f\u901a\u9053\u662f\u6709\u7528\u7684\uff0c\u7279\u522b\u662f\u8de8\u591a\u4e2a\u8d77\u6e90\u7684\u6c9f\u901a\u3002\u8bf7\u8003\u8651\u4ee5\u4e0b\u60c5\u5f62\uff1a\u4eba\u4eba\u7f51\u4e0a(http:\/\/renren.com)\u5d4c\u5165\u4e86\u4e00\u4e2a\u7b2c\u4e09\u65b9\u7684\u6e38\u620f\u9875\u9762\uff08\u901a\u8fc7iframe\u7684\u5f62\u5f0f\uff0c\u5982\u201c\u4eba\u4eba\u9910\u5385\u201d\uff09\uff0c\u540c\u65f6\uff0c\u8fd9\u4e2a\u7b2c\u4e09\u65b9\u7684\u6e38\u620f\u9875\u9762(http:\/\/game.com)\u53c8\u9700\u8981\u4ece\u53e6\u5916\u4e00\u4e2a\u901a\u8baf\u5f55\u7f51\u7ad9(http:\/\/address.com)\u83b7\u53d6\u7528\u6237\u7684\u901a\u8baf\u4fe1\u606f\u3002\u548b\u529e\uff1f<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\u901a\u8baf\u5f55\u7ad9\u70b9\u8981\u53d1\u9001\u4fe1\u606f\u7ed9\u6e38\u620f\u7ad9\u70b9\uff0c\u6839\u636e\u8de8\u6587\u6863\u901a\u4fe1\uff0c\u6211\u4eec\u8ba9\u7236\u9875\u9762\u4f5c\u4e3a\u4ee3\u7406\uff08\u4e5f\u5c31\u662f\u8fd9\u91cc\u7684\u4eba\u4eba\u7f51\u9875\u9762\uff09\uff08\u7c7b\u4f3c\u7b2c\u4e00\u4e2ademo\uff09\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u505a\u6cd5\u610f\u5473\u7740\u901a\u8baf\u5f55\u7ad9\u70b9\u9700\u8981\u6709\u548c\u4eba\u4eba\u7f51\u9875\u9762\u4e00\u6837\u7684\u4fe1\u4efb\u7ea7\u522b\u3002\u4eba\u4eba\u7f51\u8fd9\u4e2a\u793e\u4ea4\u7ad9\u70b9\u9700\u8981\u4fe1\u4efb\u6bcf\u4e00\u4e2a\u8bf7\u6c42\uff0c\u6216\u8005\u4e3a\u6211\u4eec\u8fc7\u6ee4\uff08\u5e94\u8be5\u6307\uff1a\u4e00\u4e2a\u4e00\u4e2a\u6307\u5b9a\uff09\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u4f7f\u7528\u6e20\u9053\u901a\u4fe1\uff0c\u901a\u8baf\u5f55\u7ad9\u70b9(http:\/\/address.com)\u548c\u6e38\u620f\u7ad9\u70b9(http:\/\/game.com)\u53ef\u4ee5\u76f4\u63a5\u6c9f\u901a\u3002<\/p>\n<p><strong>MessageChannel\u548cMessagePort\u5bf9\u8c61<\/strong><br \/>\n\u5f53\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a<code>MessageChannel<\/code>\u5bf9\u8c61\uff0c\u6211\u4eec\u5b9e\u9645\u4e0a\u521b\u9020\u4e86\u4e24\u4e2a\u76f8\u4e92\u5173\u8054\u7684\u7aef\u53e3\u3002\u4e00\u4e2a\u7aef\u53e3\u4fdd\u6301\u5f00\u653e\uff0c\u4e3a\u53d1\u9001\u7aef\u3002\u53e6\u5916\u4e00\u4e2a\u88ab\u8f6c\u53d1\u5230\u5176\u4ed6\u6d4f\u89c8\u4e0a\u4e0b\u6587\u3002<\/p>\n<p>\u6bcf\u4e00\u4e2a\u7aef\u53e3\u5c31\u662f\u4e00\u4e2a<code><a href=\"http:\/\/dev.w3.org\/html5\/postmsg\/#messageport\">MessagePort<\/a><\/code>\u5bf9\u8c61\uff0c\u5305\u542b3\u4e2a\u53ef\u7528\u65b9\u6cd5\uff1a<\/p>\n<table width=\"100%\" border=\"0\" cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<tr>\n<th scope=\"row\">postMessage()<\/th>\n<td>\u901a\u8fc7\u901a\u9053\u53d1\u9001\u6d88\u606f<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">start()<\/th>\n<td>\u5f00\u59cb\u5728\u7aef\u53e3\u4e0a\u5206\u6d3e\u63a5\u53d7\u7684\u4fe1\u606f<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">close()<\/th>\n<td>\u5173\u95ed\u7aef\u53e3<\/td>\n<\/tr>\n<\/table>\n<p><code>MessagePort<\/code>\u5bf9\u8c61\u8fd8\u6709<code>onmessage<\/code>\u4e8b\u4ef6\u5c5e\u6027\uff0c\u53ef\u88ab\u7528\u6765\u5b9a\u4e49\u4e8b\u4ef6\u53e5\u67c4\u800c\u4e0d\u662f\u4e8b\u4ef6\u76d1\u542c\u3002<\/p>\n<p><strong>\u5b9e\u4f8b<\/strong><br \/>\n\u4e0a\u9762\u8fc7\u4e8e\u672f\u8bed\u7684\u4e1c\u897f\u6211\u81ea\u5df1\u90fd\u770b\u4e0d\u660e\u767d\uff0c\u8fd8\u662f\u5b9e\u4f8b\u597d\u8bf4\u8bdd\u3002<\/p>\n<p>\u60a8\u53ef\u7528\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201202\/web-messing-channel-messaging-two-iframe.html\">\u901a\u9053\u901a\u4fe1\u5e94\u7528demo<\/a><\/p>\n<p>\u6587\u7ae0\u4ee5\u5f00\u59cb\u7684\u517c\u5bb9\u6027\u90e8\u5206\u5df2\u7ecf\u63d0\u8fc7\uff0cFireFox\u6d4f\u89c8\u5668\u76ee\u524d\u8fd8\u4e0d\u652f\u6301\u901a\u4fe1\u901a\u9053\uff0c\u56e0\u6b64\uff0c\u4e0ademo\u9700\u8981\u5728Opera\u6216\u662fChrome\u6d4f\u89c8\u5668\u4e0b\u6253\u5f00\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-29_120645.png\" title=\"\u4e0d\u652f\u6301\u7684firefox\u4e0b\u622a\u56fe\" class=\"alignnone\" width=\"330\" height=\"148\" \/><\/p>\n<p>demo\u9875\u9762\u64cd\u4f5c\u4e0e\u7b2c\u4e00\u4e2ademo\u7c7b\u4f3c\uff0c\u5de6\u4fa7\u8f93\u5165\u4fe1\u606f\uff0c\u70b9\u51fb\u6309\u94ae\u63d0\u4ea4\u3002<\/p>\n<p>\u4f8b\u5982\u5728Opera\u6d4f\u89c8\u5668\u4e0b\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"Opera\u6d4f\u89c8\u5668\u4e0b\u7684\u901a\u9053\u901a\u4fe1\u622a\u56fe \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201202\/2012-02-29_120926.png\" title=\"Opera\u6d4f\u89c8\u5668\u4e0b\u7684\u901a\u9053\u901a\u4fe1\u622a\u56fe\" class=\"alignnone\" width=\"541\" height=\"269\" \/><\/p>\n<p>\u5f53\u7136\uff0c\u5e76\u4e0d\u662f\u6bcf\u4e00\u6b21\u90fd\u662fOK\u7684\uff0c\u6709\u65f6\u5019\u4f1a\u5f39\u51fa\u201c\u7aef\u53e3\u4e0d\u53ef\u7528\u7684\u63d0\u793a\u201d\uff0c\u539f\u56e0\u4e0d\u8be6\uff0c\u4f30\u8ba1\u53ef\u80fd\u4e0e\u7aef\u53e3\u88ab\u5360\u7528\u6709\u5173\uff0c\u9047\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u7a0d\u540e\u5c1d\u8bd5\u5373\u53ef\u3002<\/p>\n<p><strong>\u7b80\u6790<\/strong><br \/>\n\u4e0a\u9762\u7684demo\u52a8\u7528\u4e86\u4e09\u4e2a\u9875\u9762\uff1a\u4e3b\u9875\u9762\u548c\u4e24\u4e2aiframe\u9875\u9762\u3002\u4e0b\u9762\u8bf4\u8bf4\u6bcf\u4e2a\u9875\u9762\u90fd\u505a\u4e86\u4e9b\u4ec0\u4e48\uff1a<\/p>\n<p>\u9996\u5148\u662f\u7b2c\u4e00\u4e2aiframe\u9875\u9762\uff08demo\u5de6\u4fa7\u6709\u8868\u5355\u63d0\u4ea4\u7684\u90a3\u4e2a\uff09\u3002\u5176\u4efb\u52a1\u6709\u4e24\u4e2a\uff1a\u4e00\u662f\u544a\u8bc9\u4e3b\u9875\u9762\uff0c\u6211\u52a0\u8f7d\u597d\u4e86\uff1b\u4e8c\u662f\u6269\u5927\u5e76\u786e\u5b9a\u7aef\u53e3\uff0c\u8868\u5355\u63d0\u4ea4\u65f6\u7528\u505a\u53d1\u9001\u7528\u3002<\/p>\n<div class=\"zxx_code\">\n<pre><span style=\"color:green;\">\/\/ \u544a\u8bc9\u4e3b\u9875\u9762\uff0c\u6211\u52a0\u8f7d\u597d\u4e86<\/span>\nwindow.parent.postMessage('\u53d1\u9001\u9875\u52a0\u8f7d\u5b8c\u6bd5', 'http:\/\/www.zhangxinxu.com');<\/pre>\n<\/div>\n<div class=\"zxx_code\">\n<pre>\n<span style=\"color:green;\">\/\/ \u6269\u5927\u5e76\u786e\u5b9a\u7aef\u53e3<\/span>\nport = evt.ports[0];\n\n<span style=\"color:green;\">\/\/ \u7aef\u53e3\u53d1\u9001\u6570\u636e<\/span>\nport.postMessage(message);<\/pre>\n<\/div>\n<p>\u7136\u540e\u662f\u7b2c\u4e8c\u4e2aiframe\u9875\u9762\uff08demo\u53f3\u4fa7\u90a3\u4e2a\uff0c\u7528\u6765\u663e\u793a\u4fe1\u606f\uff09\u3002\u5176\u4efb\u52a1\u6709\u4e09\u4e2a\uff0c\u4e00\u662f\u521b\u5efa<code>MessageChannel<\/code>\u901a\u9053\u5bf9\u8c61\uff1b\u4e8c\u662f\u544a\u8bc9\u4e3b\u9875\u9762\uff0c\u6211\u52a0\u8f7d\u597d\u4e86\uff0c\u5e76\u628a\u7aef\u53e3\u4f20\u8fc7\u53bb\uff1b\u4e09\u662f\u663e\u793a\u53d1\u9001\u4fe1\u606f\u3002<\/p>\n<div class=\"zxx_code\">\n<pre><span style=\"color:green;\">\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 MessageChannel \u5bf9\u8c61<\/span>\nvar mc = new MessageChannel();\n\n<span style=\"color:green;\">\/\/ \u7ed9\u7236\u7ea7\u53d1\u9001\u4e00\u4e2a\u7aef\u53e3<\/span>\nwindow.parent.postMessage('\u663e\u793a\u9875\u52a0\u8f7d\u5b8c\u6bd5','http:\/\/www.zhangxinxu.com', [mc.port1]);<\/pre>\n<\/div>\n<div class=\"zxx_code\">\n<pre><span style=\"color:green;\">\/\/ \u663e\u793a\u53d1\u9001\u7684\u4fe1\u606f<\/span>\nmc.port2.addEventListener('message', messageHandle, false);\nmc.port2.start();<\/pre>\n<\/div>\n<p>\u6700\u540e\u662f\u4e3b\u9875\u9762\u3002\u5176\u4efb\u52a1\u5f88\u7b80\u5355\u5c31\u4e00\u4e2a\uff1a\u544a\u8bc9\u7b2c\u4e00\u4e2aiframe\u9875\u9762\uff0c\u7aef\u53e3\u5df2\u7ecf\u6253\u5f00\u4e86\uff08\u7b2c\u4e00\u4e2aiframe\u5c31\u53ef\u4ee5\u786e\u5b9a\u8ddf\u7b2c\u4e8c\u4e2aiframe\u901a\u4fe1\u7684\u7aef\u53e3\u4e86\uff09\u3002<\/p>\n<div class=\"zxx_code\">\n<pre><span style=\"color:green;\">\/\/ \u5c06\u7aef\u53e3\u544a\u8bc9\u5176\u4ed6\u6587\u6863<\/span>\nwindow.frames[0].postMessage('\u7aef\u53e3\u6253\u5f00','http:\/\/www.zhangxinxu.com', evt.ports);<\/pre>\n<\/div>\n<p>\u4e8e\u662f\uff0c\u4e09\u8005\u5173\u8054\u914d\u5408\uff0c\u5c31\u641e\u5b9a\u5566\uff01<\/p>\n<h3>\u4e94\u3001\u5176\u4ed6\u8d44\u6e90<\/h3>\n<p>slideshare\u4e0a\u6709\u4e2aweb\u901a\u4fe1\u7684\u6587\u6863\uff0c\u8fd9\u91cc\u5c55\u793a\u4e0b\uff0c\u6709\u5174\u8da3\u7684\u7ae5\u978b\u53ef\u4ee5\u5feb\u901f\u6d4f\u89c8\u4e0b\u3002<\/p>\n<div style=\"width:425px\" id=\"__ss_7970364\"> <strong style=\"display:block;margin:12px 0 4px\"><a href=\"http:\/\/www.slideshare.net\/miketaylr\/html5-web-messaging-7970364\" title=\"HTML5 Web Messaging\" target=\"_blank\">HTML5 Web Messaging<\/a><\/strong> <iframe loading=\"lazy\" src=\"http:\/\/www.slideshare.net\/slideshow\/embed_code\/7970364\" width=\"425\" height=\"355\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe> <\/p>\n<div style=\"padding:5px 0 12px\"> \u66f4\u591a\u6765\u81ea<a href=\"http:\/\/www.slideshare.net\/miketaylr\" target=\"_blank\">Mike Taylor<\/a>\u7684<a href=\"http:\/\/www.slideshare.net\/\" target=\"_blank\">\u6f14\u793a\u6587\u6863<\/a><\/div>\n<\/p><\/div>\n<h3>\u516d\u3001\u53c2\u8003\u6587\u7ae0<\/h3>\n<p>\u00b7 <a href=\"http:\/\/dev.opera.com\/articles\/view\/window-postmessage-messagechannel\/\">An Introduction to HTML5 web messaging<\/a><br \/>\n\u00b7 <a href=\"http:\/\/www.w3.org\/html\/ig\/zh\/wiki\/HTML5\/browsers\">HTML5\/browsers\uff08\u4e2d\u6587\uff09<\/a><br \/>\n\u00b7 <a href=\"http:\/\/www.36ria.com\/3890\">\u5229\u7528HTML5\u7684window.postMessage\u5b9e\u73b0\u8de8\u57df\u901a\u4fe1<\/a><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea<a href=\"http:\/\/www.zhangxinxu.com\/\">\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[<a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a>]<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=2229<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u7684\u5185\u5bb9\u8bf4\u767d\u4e86\u5c31\u662f\u5982\u4f55\u89e3\u51b3web\u5f00\u53d1\u4e2d\u7684\u8de8\u57df\u901a\u4fe1\u95ee\u9898\u7684\uff0c\u4f8b\u5982iframe\u76f8\u5173\u7684\u4e00\u4e9b\u4ea4\u4e92\u7b49\u3002\u4ee5\u4e0b\u4e3a\u90e8\u5206\u6458\u8981\uff1a<br \/>\n\u5f53\u6211\u4eec\u8c08\u8bbaweb\u901a\u4fe1\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u8c08\u8bba\u7684\u662f\u4e24\u4e2a\u7565\u6709\u4e0d\u540c\u7684\u7cfb\u7edf\uff1a\u8de8\u6587\u6863\u901a\u4fe1(cross-document messaging)\u548c\u901a\u9053\u901a\u4fe1(channel messaging)\u3002\u8de8\u6587\u6863\u901a\u4fe1\u5c31\u662f\u6211\u4eec\u56fd\u5185\u66f4\u4e3a\u719f\u77e5\u7684HTML5 window.postMessage()\u5e94\u7528\u7684\u90a3\u79cd\u901a\u4fe1\uff1b\u901a\u9053\u901a\u4fe1\u4e5f\u88ab\u79f0\u4e3a\u201dMessageChannel\u201d. \u4f34\u968f\u7740server-sent\u4e8b\u4ef6\u4ee5\u53caweb sockets, \u8de8\u6587\u6863\u901a\u4fe1\u548c\u901a\u9053\u901a\u4fe1\u6210\u4e3aHTML5 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