{"id":169,"date":"2015-03-13T23:40:57","date_gmt":"2015-03-13T15:40:57","guid":{"rendered":"http:\/\/yusemo.com\/?p=169"},"modified":"2015-05-21T21:04:12","modified_gmt":"2015-05-21T13:04:12","slug":"function%e7%9a%84%e4%b8%80%e4%ba%9b%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/yusemo.com\/?p=169","title":{"rendered":";!function(){}\u7684\u4e00\u4e9b\u7406\u89e3"},"content":{"rendered":"<p>;!function(){&#8230;}<\/p>\n<p>\u76ee\u7684\u662f\u9632\u6b62\u5728minify\u5408\u5e76\u884c\u7684\u65f6\u5019\u7531\u4e8e\u524d\u4e00\u884c\u7f3a\u5c11\u5206\u53f7\u5bfc\u81f4\u9519\u8bef \u6bd4\u5982:<\/p>\n<p>alert(1)<br \/>\n!function(){&#8230;}<\/p>\n<p>\u5408\u5e76\u540e\u53d8\u6210 alert(1)!function&#8230; \u5c31syntax error\u4e86 \u52a0\u4e00\u4e2a\u5206\u53f7\u5c31\u597d\u4e86;<\/p>\n<pre>\r\n=================================================================\r\n\r\n\u5ef6\u5c55\u4e00\u4e0b\uff1a\r\n!function(){alert('aaa')}()        \/\/ true\r\n+function(){alert('aaa')}()        \/\/ NaN\r\n-function(){alert('aaa')}()        \/\/ NaN\r\n~function(){alert('aaa')}()        \/\/ -1<\/pre>\n<p>\u56e0\u4e3a\u8fd9\u6837\u7684\u4ee3\u7801\u6df7\u6dc6\u4e86\u51fd\u6570\u58f0\u660e\u548c\u51fd\u6570\u8c03\u7528\uff0c\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u58f0\u660e\u7684\u51fd\u6570<\/p>\n<div class=\"codecolorer-container text default\" style=\"overflow:auto;white-space:nowrap;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/><\/div><\/td><td><div class=\"text codecolorer\">a<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<p>\uff0c\u5c31\u5e94\u8be5\u4ee5<\/p>\n<div class=\"codecolorer-container text default\" style=\"overflow:auto;white-space:nowrap;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/><\/div><\/td><td><div class=\"text codecolorer\">a();<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<p>\u7684\u65b9\u5f0f\u8c03\u7528\u3002<\/p>\n<p>\u4f46\u662f\u62ec\u53f7\u5219\u4e0d\u540c\uff0c\u5b83\u5c06\u4e00\u4e2a\u51fd\u6570\u58f0\u660e\u8f6c\u5316\u6210\u4e86\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u89e3\u6790\u5668\u4e0d\u518d\u4ee5\u51fd\u6570\u58f0\u660e\u7684\u65b9\u5f0f\u5904\u7406\u51fd\u6570a\uff0c\u800c\u662f\u4f5c\u4e3a\u4e00\u4e2a\u51fd\u6570\u8868\u8fbe\u5f0f\u5904\u7406\uff0c\u4e5f\u56e0\u6b64\u53ea\u6709\u5728\u7a0b\u5e8f\u6267\u884c\u5230\u51fd\u6570a\u65f6\u5b83\u624d\u80fd\u88ab\u8bbf\u95ee\u3002\u6240\u4ee5\uff0c<strong><span style=\"color: #ff0000;\">\u4efb\u4f55\u6d88\u9664\u51fd\u6570\u58f0\u660e\u548c\u51fd\u6570\u8868\u8fbe\u5f0f\u95f4\u6b67\u4e49\u7684\u65b9\u6cd5\uff0c\u90fd\u53ef\u4ee5\u88ab\u89e3\u6790\u5668\u6b63\u786e\u8bc6\u522b<\/span><\/strong>\u3002\u6240\u4ee5\uff0c\u8d4b\u503c\uff0c\u903b\u8f91\uff0c\u751a\u81f3\u662f\u9017\u53f7\uff0c\u5404\u79cd\u64cd\u4f5c\u7b26\u90fd\u53ef\u4ee5\u544a\u8bc9\u89e3\u6790\u5668\uff0c\u8fd9\u4e2a\u4e0d\u662f\u51fd\u6570\u58f0\u660e\uff0c\u5b83\u662f\u4e2a\u51fd\u6570\u8868\u8fbe\u5f0f\u3002\u5e76\u4e14\uff0c\u5bf9\u51fd\u6570\u4e00\u5143\u8fd0\u7b97\u53ef\u4ee5\u7b97\u7684\u4e0a\u662f\u6d88\u9664\u6b67\u4e49\u6700\u5feb\u7684\u65b9\u5f0f\uff0c\u611f\u53f9\u53f7\u53ea\u662f\u5176\u4e2d\u4e4b\u4e00\uff0c\u5982\u679c\u4e0d\u5728\u4e4e\u8fd4\u56de\u503c\uff0c\u8fd9\u4e9b<strong>\u4e00\u5143\u8fd0\u7b97\u90fd\u662f\u6709\u6548\u7684;\u00a0<\/strong><\/p>\n<p>\u6d4b\u8bd5\u4e0b()\u662f\u6027\u80fd\u6700\u4f18\u3002\u56e0\u6b64\u5e38\u7528\u4e8e\u00a0(function(){})();\u4e5f\u53eb:\u81ea\u6267\u884c\u51fd\u6570\u8868\u8fbe\u5f0f;<\/p>\n<p>\u53c2\u8003\uff1a<\/p>\n<p>http:\/\/swordair.com\/function-and-exclamation-mark\/<\/p>\n<p>http:\/\/suqing.iteye.com\/blog\/1981591<\/p>\n<p>\u300aJavascript\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\uff08\u7b2c3\u7248\uff09\u300b 7.3 \u6a21\u4eff\u5757\u7ea7\u4f5c\u7528\u57df<\/p>\n","protected":false},"excerpt":{"rendered":"<p>;!function(){&#8230;} \u76ee\u7684\u662f\u9632\u6b62\u5728minify\u5408\u5e76\u884c\u7684\u65f6\u5019\u7531\u4e8e\u524d\u4e00\u884c\u7f3a\u5c11\u5206\u53f7\u5bfc\u81f4\u9519\u8bef \u6bd4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/169"}],"collection":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=169"}],"version-history":[{"count":2,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/169\/revisions"}],"predecessor-version":[{"id":232,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/169\/revisions\/232"}],"wp:attachment":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}