Typescript error: Cannot read property X of undefined

Question

i created an instance of class Meetings:

export var meeting: Meetings; //create a meeting instance of Meeting class present into meeting.ts

and when i call a function called "meetForMe()" on Meetings class:

var myMeeting = meeting.meetForMe(email);

i receive this error:

Cannot read property 'meetForMe' of undefined

I have declared class Meetings in this way:

export class Meetings{....}

TSV · Accepted Answer · 2016-12-29 14:27:36Z

2

Object shoud be created before it can be used:

export var meeting = new Meetings();

In your code you just declare a variable of "Meetings" type.

answered Dec 29, 2016 at 14:27

TSV

7,6681 gold badge33 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Perfect it work! I don't understand because on typescript format it doesn't work.

Tha'er AlAjlouni ثائر العجلوني · Accepted Answer · 2016-12-29 14:28:34Z

1

You haven't initialized the meeting variable yet. Try export var meeting: Meetings = new Meetings(); instead

answered Dec 29, 2016 at 14:28

15.6k7 gold badges37 silver badges40 bronze badges