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 number 15 // 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 number 23 // return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10); 24 return true; 25 } 26 27 // other browser 28 return false; 29 } 30 31 function alert_browser_version() { 32 if(detectIE()){ 33 alert("Browser Error: We 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>