[removed] Quickly lookup value in object (like we can with properties)

Question

I have an object that has pairs of replacement values used for simple encoding / decoding (not for security, just for a convenience; too complicated to explain it all here).

Answer 1

If you're looking for array keys check here.

https://raw.github.com/kvz/phpjs/master/functions/array/array_keys.js

function array_keys (input, search_value, argStrict) {
    var search = typeof search_value !== 'undefined', tmp_arr = [], strict = !!argStrict, include = true, key = '';

    if (input && typeof input === 'object' && input.change_key_case) {
        return input.keys(search_value, argStrict);
    }

    for (key in input) {
        if (input.hasOwnProperty(key)) {
            include = true;
            if (search) {
                if (strict && input[key] !== search_value) include = false;
                else if (input[key] != search_value) include = false;
            }
            if (include) tmp_arr[tmp_arr.length] = key;
        }
    }

    return tmp_arr;
}