標籤:span root ide use navigator string oca log on()
1 <script> 2 function detectIE() { 3 var ua = window.navigator.userAgent; 4 5 var msie = ua.indexOf(‘MSIE ‘); 6 if (msie > 0) { 7 // IE 10 or older => return version number 8 // return parseInt(ua.substring(msie + 5, ua.indexOf(‘.‘, msie)), 10); 9 return true;10 }11 12 var trident = ua.indexOf(‘Trident/‘);13 if (trident > 0) {14 // IE 11 => return version number15 // var rv = ua.indexOf(‘rv:‘);16 // return parseInt(ua.substring(rv + 3, ua.indexOf(‘.‘, rv)), 10);17 return true;18 }19 20 var edge = ua.indexOf(‘Edge/‘);21 if (edge > 0) {22 // Edge (IE 12+) => return version number23 // return parseInt(ua.substring(edge + 5, ua.indexOf(‘.‘, edge)), 10);24 return true;25 }26 27 // other browser28 return false;29 }30 31 function alert_browser_version() {32 if(detectIE()){33 alert("Browser Error:\nWe are strongly recommend you visit the website via Chrome or Firefox instead of IE.");34 window.location.href = "http://hkw20016704.hbap.adroot.hsbc:8000/cr/index/";35 return false;36 }37 }38 </script>
<body onload="alert_browser_version()">....</body>
Detect IE browser by using JavaScript