Variables in regexp

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passing variable to a regexp in javascript [duplicate] 4 answers

How do you use a variable in a regular expression? 16 answers

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var args = ['Name', 'Surname', 'City', 'Dog'];
var regExp = new RegExp(args.join("|"));

if (regExp.test(names)) {
  alert('true');
}

More generally, you just need to concatenate the arguments as a string inside a new RegExp object. Depending on what is in the variables, you may need to escape them first - but there are ample places on StackOverflow to find regular expression escaping advice.

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