JavaScript, transform object into array

Question

I\'ve got an object:

var obj = {
    \"Mike\": 24,
    \"Peter\": 23,
    \"Simon\": 33,
    \"Tom\": 12,
    \"Frank\": 31
};

I want to cr

Answer 1

Some libraries have something to do this (such as prototype's "values" function), but they're really just wrappers around a function that loops over and returns the values of the object.

http://www.prototypejs.org/api/object/values

Answer 2

Posting this strictly for fun. Save your downvotes. I'm not recommending it actually be used. ;o)

Example: http://jsfiddle.net/WGpXX/

var arr = eval( '[' +
    JSON.stringify(obj)
    .slice(1,-1)
    .replace(/"[^"]+":/g,'')
    + ']');

Technically works in this simple case.

Answer 3

Try this:

var obj = {     "Mike": 24,     "Peter": 23,     "Simon": 33,     "Tom": 12,     "Frank": 31 } ;
    var arr = []
    for(var a in obj)
    {
        var val = obj[a];
        arr.push(val);
    }
alert(arr.length)

Answer 4

With jQuery you could use the each function:

var obj = {
    "Mike": 24,
    "Peter": 23,
    "Simon": 33,
    "Tom": 12,
    "Frank": 31
}

myArray=new Array();
$.each(obj, function(key, value) { 
  myArray.push(value);
});

Answer 5

Use Object.values it will return array.

Object.values(obj) // [24, 23, 33, 12, 31]

Answer 6

The obvious way would be to do a for-in loop, as @quixoto suggests, but just for the record, and since you are looking for a built-in way, you could pair the new ECMAScript 5 methods Object.keys and Array.prototype.map, available on latest browsers:

function valuesToArray(obj) {
  return Object.keys(obj).map(function (key) { return obj[key]; });
}

UPDATE: ES2017 introduced the Object.values method, which does exactly what you want.

Additionally, ES2017 adds another often useful method, Object.entries. This method returns an array of key-value pairs.

const obj = {
    "Mike": 24,
    "Peter": 23,
    "Simon": 33,
    "Tom": 12,
    "Frank": 31
};

const values = Object.values(obj);
const entries = Object.entries(obj);
console.log('values:', values);
console.log('entries:', entries);