Fuzzy string matching function for JavaScript

fuzzy_string_match.js

    // Fuzzy matching algorithm
    var fuzzyMatch = function(needle, haystack) {
        if(needle === "" || haystack === "") return true;

        needle = needle.toLowerCase().replace(/ /g, "");
        haystack = haystack.toLowerCase();

        // All characters in needle must be present in haystack
        var j = 0; // haystack position
        for(var i = 0; i < needle.length; i++) {
            // Go down the haystack until we find the current needle character
            while(needle[i] !== haystack[j]) {
                j++;

                // If we reached the end of the haystack, then this is not a match
                if(j === haystack.length) {
                    return false;
                }
            }

            // Here, needle character is same as haystack character
            //console.log(needle + ":" + i + " === " + haystack + ":" + j);
        }

        // At this point, we have matched every single letter in the needle without returning false
        return true;
    }