How does the angularjs.forEach() work?

Question

I have the object :

var obj = {
     a : 5,
     b : 6,
     c : 7
}

I want to set zero to every object properties using angular.forEach():

angular.forEach(obj, function(value, key) {
    value = 0;
});

I displayed their values using console.log() and I found out that none of them are zero.

but when I do

obj.a = 0;
obj.b = 0;
obj.c = 0;

Their values are zero.

Can anyone explain about this?

You're just assigning the parameter. You can't actually do that. — SLaks, Nov 25 '15 at 16:27
See http://stackoverflow.com/questions/518000/is-javascript-a-pass-by-reference-or-pass-by-value-language and http://stackoverflow.com/questions/6605640/javascript-by-reference-vs-by-value. — JKillian, Nov 25 '15 at 16:30

score 2 · Accepted Answer · answered Nov 25 '15 at 16:28

2

You are just assigning the value parameter a value of 0.

Access each property on the object with the key parameter:

angular.forEach(obj, function(value, key) {
    obj[key] = 0;
});

answered Nov 25 '15 at 16:28

Josh Crozier

1 Answers1