Question

138

Why is forEach not a function for this object?

rated 0 times [ 141] [ 3] / answers: 1 / hits: 186256 / 9 Years ago, sun, june 28, 2015, 12:00:00

This is probably something really dumb, but I don't understand why this doesn't work.

var a = {cat:large};



a.forEach(function(value, key, map){

    console.log(value);

});

Uncaught TypeError: a.forEach is not a function

http://jsfiddle.net/ty7z6pse/

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nikhilc

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2 Years ago

answered 9 Years ago emerymariamm · Accepted Answer

Object does not have forEach, it belongs to Array prototype. If you want to iterate through each key-value pair in the object and take the values. You can do this:

Object.keys(a).forEach(function (key){

    console.log(a[key]);

});

Usage note: For an object v = {cat:large, dog: small, bird: tiny};, Object.keys(v) gives you an array of the keys so you get [cat,dog,bird]