判断ie浏览器代码
function ie(){
var agent = navigator.userAgent.toLowerCase();
return (!!window.ActiveXObject || "ActiveXObject" in window) ? (
(agent.match(/msie\s(\d+)/) || [])[1] || '11'
) : false;
}
var version = ie();
alert(version)
另一种检测办法
var versions = {
objectobject: 7, //IE7-8
objectundefined: 6, //IE6
undefinedfunction: NaN, // other modern browsers
undefinedobject: NaN //Mobile Safari 8.0.0 (iOS 8.4.0)
}
/* istanbul ignore next */
var msie = document$1.documentMode || versions[typeof document$1.all + typeof XMLHttpRequest]
var modern = /NaN/.test(msie) || msie > 8
