CODEWITHSUNDEEP
javascriptregex
nLearn
nLearn

Reputation: 55

how to create Regex with string concatination

i want to concatenate string with regular expression

my regular expression is 

$scope.searchEstimateMeasures = Ne;
 var exp = new RegExp("/^" + $scope.searchEstimateMeasures +"/i");

when i am trying to test this regualr expression using

if (exp.test(Net Value))

i am getting an error saying object doesnot support property or method test

i tried using 

var exp = new RegExp('/^' + $scope.searchEstimateMeasures +'/i');

but it is returning false.

if i use regex directly(/^ne/i.test(Net Value)) i am getting true.

Upvotes: 0

Views: 43

Answers (1)

Karl-André Gagnon
Karl-André Gagnon

Reputation: 33880

new RegExp accept 2 arguments.

The first one is what's usualy be the / /.

The second one is the flag.

Try that :

var exp = new RegExp('^' + $scope.searchEstimateMeasures, 'i');

Upvotes: 3

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