Javascript array showing not an array Error [duplicate]

Question

i have an array of object inside another object. when i iterate this array with

t.schedules.forEach(function(item) {
    console.log(item[index]);

});

it shows error Uncaught TypeError: t.schedules.forEach is not a function.

but i am able to get it with t.schedules[index];

Please post more of the code. Where does t get populated with respect to your forEach? — CertainPerformance
– CertainPerformance, Commented Aug 31, 2018 at 5:27
What ever schedules is, it is not an array (or you're using a really old IE). — Andreas
– Andreas, Commented Aug 31, 2018 at 5:32
@Neha If you create object like var a = {1: 'Hello'}; then it will also return Hello with a[1]. But a is object not array. — Karan
– Karan, Commented Aug 31, 2018 at 5:55
Log t.schedules not t.schedules[0] so we can see it’s structure. — Chris Cousins
– Chris Cousins, Commented Aug 31, 2018 at 6:01

Karan · Accepted Answer · 2018-08-31 06:03:22Z

1

Try like this. If t.schedules is an object then Object.values(t.schedules) will return array of values from that object. Then you can use forEach

if (typeof t.schedules == "object") {
    t.schedules = Object.values(t.schedules);
}
t.schedules.forEach(function(item) {
    console.log(item[index]);
});

answered Aug 31, 2018 at 6:03

Karan

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1 Comment

Neha Over a year ago

Thank you! typeof(t.schedules) returns Object

Code_Frank · Accepted Answer · 2018-08-31 05:34:15Z

0

This sort of thing often happens if you try iterating before the array is populated. The logged object looks like a database entry judging by the "created_at", "updated_at" etc. keys so I'm guessing you are retrieving the array from a database? If so, check that you are waiting for the response before iterating.

answered Aug 31, 2018 at 5:34

Code_Frank

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3 Comments

Neha Over a year ago

yes array is populated from ajax response

Andreas Over a year ago

That's a comment and not an answer

Chris Cousins Over a year ago

An answer shouldn’t be speculative. Are you sure this answer is correct?

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