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How to use variables inside regexp(to check the existence of a substring ) taking in consideration the following example

var hash = '!price=475;1500&ram=475;1275';
var uri_params = ['price', 'display', 'ram', 'hdd', 'brand'];
$.each(uri_params,function(index, param){
            console.log(param);
            if(/( !param(.*)|&param(.*))/i.test(hash)){
                 console.log('test');
                //than here I should add the new value to matched param

            }
});

JSFiddle http://jsfiddle.net/lgtsfiddler/c936b/8/

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    if(hash.match(new RegExp('!' + param + '(.*)|&' + param + '(.*)')) Commented Nov 21, 2013 at 12:14
  • yepp this works. thanks a lot!! Please post as answer to can accept Commented Nov 21, 2013 at 12:16
  • possible duplicate of Javascript Regexp dynamic generation? Commented Nov 21, 2013 at 12:27

1 Answer 1

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The following will work for parameters in RegExp.

if(hash.match(new RegExp('!' + param + '(.*)|&' + param + '(.*)'))

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