检测ie浏览器版本低于ie9时提示升级

时间：2024-03-04 12:32:31

test.js

var win = window;
var doc = win.document;
var input = doc.createElement ("input");
var ie = (function (){
//"!win.ActiveXObject" is evaluated to true in IE11
if (win.ActiveXObject === undefined) return null;
if (!win.XMLHttpRequest) return 6;
if (!doc.querySelector) return 7;
if (!doc.addEventListener) return 8;
if (!win.atob) return 9;
//"!doc.body.dataset" is faster but the body is null when the DOM is not
//ready. Anyway, an input tag needs to be created to check if IE is being
//emulated
if (!input.dataset) return 10;
return 11;
})();
if(ie<9){ 
    var dd=document.createElement("div");
    dd.innerHTML=\'<div style="position:absolute;top:0;height:30px; line-height:30px;;width:100%;color:#272726; text-align:center; background:#fbee25;font-size:16px;"></div>\';
    document.body.appendChild(dd);
    var text=document.createTextNode("您正在使用 Internet Explorer "+ie+" 低版本浏览器。为更好的浏览本页，建议您将浏览器升级到IE9以上或其它主流浏览器,以免影响您的正常使用!"); 
    dd.childNodes[0].appendChild(text);
}

参考原文链接：http://caibaojian.com/detect-ie-version.html

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