javascript 判断浏览器类型，RegExp 的使用

neobilly

<script language="javascript">
function checkBrowser(notWhich){
  var ua = navigator.userAgent;
  var filter = ".*?"+notWhich+"*";
  var filter = new RegExp(filter,'i');
  if(filter.test(ua)){
    alert("We are sorry ,we have detected that your browser is "+ notWhich+" Our webservice is not support to " +

notWhich +",as we will create a SVG ,and "+ notWhich +" does not parse this format,so we recommand you use other

browser like Firefox or Chrome, or you can download the SVG file and view it with tools like Inkscape.");
  }
}
checkBrowser('MSIE');
</script>

注意的就是regex如果需要通过变量来构造，需要使用RegExp,然后就是串连接需要用+，而不是著名的.
"Hello" + " World"