Object length in javascript? [duplicate]

Question

is there any way in typescript by which I can get length of an object:

Something like this:

say I have an object:

public customer:any={
     "name":"Bhushan",
     "eid":"879546",
     "dept":"IT"
}

Now I am trying to get its length in typescript.

ie. when I am doing customer.length(), I should be able to get value 3 as it has 3 elements.

I tried Object.getOwnPropertyNames(customer.value) but its returning 2 whereas I have 3 elements in my object.

any inputs?

Thierry Templier · Accepted Answer · 2016-06-28 11:03:00Z

114

You could try the following:

Object.keys(customer).length

answered Jun 28, 2016 at 11:03

Thierry Templier

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1 Comment

Is this O(1) or O(n)? I would expect .length to be O(1).

Ankit Singh · Accepted Answer · 2016-06-28 11:03:02Z

15

Object.keys(this.customer).length

answered Jun 28, 2016 at 11:03

Ankit Singh

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