string_funciton_test.js

var string_functions = require("./string_functions");

var tests = {
    "*": ["", "a", "*", "a*", "cdef"],
    "abc*": ["abc", "ddj", "abcd"],
    "asdf": ["asdf", "asdfg"],
    "as*df": ["asddf", "asqwertdf",  "asqwertddf"],
    "*eer": ["asdjfklajsklej;jfk;lseer", "eer", "aaaeer", " eer"]
},
results = [];

for (var pattern in tests) {
    var test_data = tests[pattern];
    for (var i = 0; i < test_data.length; i++) {
        results.push([pattern, test_data[i], string_functions.star_match(pattern, test_data[i])]);
    }
}

console.log(results);

string_functions.js

(function (global) {
    function star_match(pattern, src) {
        var i = 0, j = 0, flag_star = false;
        while (j < pattern.length) {
            if (pattern[j] == '*') {
                flag_star = true;
                j++;
            }
            if (flag_star) {
                if (src[i] == pattern[j]) {
                    var next_i = src.indexOf(pattern[j], i + 1);
                    if (next_i > 0 && star_match(pattern.substr(j), src.substr(next_i)))
                        return true;
                    flag_star = false;
                    j++;
                }
                i++;
            } else if (src[i] == pattern[j]) {
                i++; j++;
            } else {
                return false;
            }
        }
        return true;
    };

    global.star_match = star_match;
})(this);