Home > Web Front-end > JS Tutorial > js determines whether it is an IE browser

js determines whether it is an IE browser

小云云
Release: 2018-03-07 14:48:32
Original
2910 people have browsed it
  1. 怎么去看浏览器的内核等信息 ---- js的全局对象window子属性navigator.userAgent,这个属性是包含了浏览器信息的相关信息,包括我们需要的浏览器内核

  2. navigator.userAgent这个值取出来是个字符串,可以通过string的 indexOf方法或者正则匹配来验证关键字符串

  3. ie11和edge的判断方式有所不同,后面我会给出几个图

  4. 这个是ie11的userAgent

  5. 这个是edge的userAgent

  6. ie9的userAgent

  7. ie8的userAgent

  8. ie10的userAgent

     

 你一定发现了,ie11和edge的userAgent是和ie8,9,10差别蛮大的,那么对用的在写js时需要特别判断,下面给出我写好的一段判断是否是ie且给出ie版本号的js代码段

        function IEVersion() {            var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串  
            var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1; //判断是否IE<11浏览器  
            var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器  
            var isIE11 = userAgent.indexOf(&#39;Trident&#39;) > -1 && userAgent.indexOf("rv:11.0") > -1;            if(isIE) {                var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
                reIE.test(userAgent);                var fIEVersion = parseFloat(RegExp["$1"]);                if(fIEVersion == 7) {                    return 7;
                } else if(fIEVersion == 8) {                    return 8;
                } else if(fIEVersion == 9) {                    return 9;
                } else if(fIEVersion == 10) {                    return 10;
                } else {                    return 6;//IE版本<=7                }   
            } else if(isEdge) {                return &#39;edge&#39;;//edge
            } else if(isIE11) {                return 11; //IE11  
            }else{                return -1;//不是ie浏览器            }
        }
Copy after login

通过调用 IEVersion()可以获得返回值,值如下

值类型 值说明
-1 Number  不是ie浏览器
6 Number ie版本<=6
7 Number ie7
8 Number ie8
9 Number ie9
10 Number ie10
11 Number ie11
'edge' String ie的edge浏览器

 

 

 

 

 

 

 

 

The above is the detailed content of js determines whether it is an IE browser. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template