hash keys / values as array [duplicate]

Answer 1

Don't know if it helps, but the "foreach" goes through all the keys: for (var key in obj1) {...}

Answer 2

Here is a good example of array_keys from PHP.js library:

function array_keys (input, search_value, argStrict) {
    // Return just the keys from the input array, optionally only for the specified search_value

    var search = typeof search_value !== 'undefined',
        tmp_arr = [],
        strict = !!argStrict,
        include = true,
        key = '';

    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;
}

The same goes for array_values (from the same PHP.js library):

function array_values (input) {
    // Return just the values from the input array  

    var tmp_arr = [],
        key = '';

    for (key in input) {
        tmp_arr[tmp_arr.length] = input[key];
    }

    return tmp_arr;
}

EDIT: Removed unnecessary clauses from the code.

Answer 3

Here are implementations from phpjs.org:

• array_values
• array_keys

This is not my code, I'm just pointing you to a useful resource.

Answer 4

var a = {"apples": 3, "oranges": 4, "bananas": 42};    

var array_keys = new Array();
var array_values = new Array();

for (var key in a) {
    array_keys.push(key);
    array_values.push(a[key]);
}

alert(array_keys);
alert(array_values);

Answer 5

look at the _.keys() and _.values() functions in either lodash or underscore

• underscore _.keys
• underscore _.values
• lodash _.keys
• lodash _.values

Answer 6

var myHash = {"apples": 3, "oranges": 4, "bananas": 42}
vals=(function(e){a=[];for (var i in e) a.push(e[i]); return a;})(myHash).join(',')
keys=(function(e){a=[];for (var i in e) a.push(  i ); return a;})(myHash).join(',')
console.log(vals,keys)

basically

array=(function(e){a=[];for (var i in e) a.push(e[i]); return a;})(HASHHERE)