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139   96.7
Oct 23, 2013

How to find a substring in another string in JavaScript?

Can anyone tell me how to find a substring within another string in JavaScript? 


My string is: "The language we use today is JavaScript".  
How do I determine whether this string contains "today"?

Thank you.

588   99.9
Sep 21, 2014
This should do it.

        var testString = "The language we use today is JavaScript";

        function doesStringExist(input, token) {
            return input.indexOf(token) > 0;

        alert(doesStringExist(testString, "today"));