/*
 * 描述：判斷瀏覽器信息
 * 編寫：LittleQiang_w
 * 日期：2016.1.5
 * 版本：V1.1
 */

//判斷當(dāng)前瀏覽類型
function BrowserType()
{
    var userAgent = navigator.userAgent; //取得瀏覽器的userAgent字符串
    var isOpera = userAgent.indexOf("Opera") > -1; //判斷是否Opera瀏覽器
    var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判斷是否IE瀏覽器
    var isEdge = userAgent.indexOf("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; //判斷是否IE的Edge瀏覽器
    var isFF = userAgent.indexOf("Firefox") > -1; //判斷是否Firefox瀏覽器
    var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //判斷是否Safari瀏覽器
    var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1; //判斷Chrome瀏覽器

    if (isIE) 
    {
         var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
         reIE.test(userAgent);
         var fIEVersion = parseFloat(RegExp["$1"]);
         if(fIEVersion == 7)
         { return "IE7";}
         else if(fIEVersion == 8)
         { return "IE8";}
         else if(fIEVersion == 9)
         { return "IE9";}
         else if(fIEVersion == 10)
         { return "IE10";}
         else if(fIEVersion == 11)
         { return "IE11";}
         else
         { return "0"}//IE版本過低
     }//isIE end
     
     if (isFF) {  return "FF";}
     if (isOpera) {  return "Opera";}
     if (isSafari) {  return "Safari";}
     if (isChrome) { return "Chrome";}
     if (isEdge) { return "Edge";}
 }//myBrowser() end
 
 //判斷是否是IE瀏覽器
 function isIE()
 {
    var userAgent = navigator.userAgent; //取得瀏覽器的userAgent字符串
    var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判斷是否IE瀏覽器
    if(isIE)
    {
        return "1";
    }
    else
    {
        return "-1";
    }
 }
 
 
 //判斷是否是IE瀏覽器，包括Edge瀏覽器
 function IEVersion()
 {
    var userAgent = navigator.userAgent; //取得瀏覽器的userAgent字符串
    var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判斷是否IE瀏覽器
    var isEdge = userAgent.indexOf("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; //判斷是否IE的Edge瀏覽器
    if(isIE)
    {
         var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
         reIE.test(userAgent);
         var fIEVersion = parseFloat(RegExp["$1"]);
         if(fIEVersion == 7)
         { return "IE7";}
         else if(fIEVersion == 8)
         { return "IE8";}
         else if(fIEVersion == 9)
         { return "IE9";}
         else if(fIEVersion == 10)
         { return "IE10";}
         else if(fIEVersion == 11)
         { return "IE11";}
         else
         { return "0"}//IE版本過低
    }
    else if(isEdge)
    {
        return "Edge";
    }
    else
    {
        return "-1";//非IE
    }