how to set variable value in pattern regex in Jquery

Question

how to set variable value in pattern regx in Jquery.I want to set pattern value dyanamically.Please help me How to set

 <!DOCTYPE html>
    <html>
    <body>

    <script language="javascript">
      function checkABC(str){
    var test="abc";
        var pattern = /'test'/gi
        if(str.match(pattern)){
          alert('matches');
        }else{
          alert('no match');
        }
      }
    </script>
    <input type="button" value="matches" onclick="checkABC('deabcfg')" />

    </body>
    </html>

Arun P Johny · Accepted Answer · 2013-12-06 06:59:15Z

2

Use RegExp constructor

function checkABC(str) {
    var test = "abc";
    var pattern = new RegExp(test, 'gi');
    if (str.match(pattern)) {
        alert('matches');
    } else {
        alert('no match');
    }
}

Demo: Fiddle

answered Dec 6, 2013 at 6:59

Arun P Johny

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Comments

Nish · Accepted Answer · 2013-12-06 07:00:39Z

0

Use like this :

var pattern = new RegExp("regex"+test,"g");

answered Dec 6, 2013 at 7:00

Nish

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