JavaScript or jQuery equivalent of PHP's strstr() function

Question

Is there a function in jQuery or JavaScript that does the same as strstr() in PHP?

I have an AJAX response that should be 1,2,3,12,13,23 or 123. I want

Answer 1

Here is an implementation without any library/method calls:

function strstr (haystack, needle) {
    var i = 0,
        tempLength = 0,
        temp = [];
    for (;;) {
        if (haystack[i] === undefined || needle == null) {
            return "No match";
        }
        //if the char doesn't match then reset
        else if (haystack[i] !== needle[tempLength]) {
            temp = [];
            tempLength = 0;
        } 
        //the char matches so let's store it.
        else if (haystack[i] === needle[tempLength]) {
            temp[tempLength] = haystack[i];
            if (needle[tempLength + 1] === undefined) {
                return temp;
            }
            tempLength++;
        }
     i++;
   }
};