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  • 获得 Javascript 版本

    最近看一个人的BLOG,发现这个文章,非常不错,引入来存档

    <script type="text/javascript">
    		function getjsversion(){
    			var n = navigator;
    			var u = n.userAgent;
    			var apn = n.appName;
    			var v = n.appVersion;
    			var ie = v.indexOf('MSIE ')
    			if(ie > 0){
    			   apv = parseInt(i = v.substring(ie + 5));
    			   if(apv > 3) {
    			       apv = parseFloat(i);
    			   }
    			}else{
    			   apv = parseFloat(v);
    			}
    			var isie = (apn == 'Microsoft Internet Explorer');
    			var ismac = (u.indexOf('Mac') >= 0);
    			var javascriptVersion = "1.0";
    			if(String && String.prototype){
    			   javascriptVersion = '1.1';
    			   if(javascriptVersion.match){
    			       javascriptVersion = '1.2';
    			       var tm = new Date;
    			       if(tm.setUTCDate){
    			           javascriptVersion = '1.3';
    			           if(isie && ismac && apv >= 5) javascriptVersion = '1.4';
    			           var pn = 0;
    			           if(pn.toPrecision){
    			               javascriptVersion = '1.5';
    			               a = new Array;
    			               if(a.forEach){
    			                   javascriptVersion = '1.6';
    			                   i = 0;
    			                   o = new Object;
    			                   tcf = new Function('o','var e,i=0;try{i=new Iterator(o)}catch(e){}return i');
    			                   i = tcf(o);
    			                   if(i && i.next) {
    			                       javascriptVersion = '1.7';
    			                   }
    			               }
    			           }
    			       }
    			   }
    			}
    			return javascriptVersion;
    		}
    	alert(getjsversion());
    </script>

    来源:http://www.phppan.com/2010/09/how-to-check-javascript-version/

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  • 原文地址:https://www.cnblogs.com/liushannet/p/1814959.html
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