Push value to observableArray collection

Question

I'm getting following error when I want to push items after I set null to observableArray()

can not read property push of null

self.roomMembers(null);

// I got error here
self.roomMembers.push(new member(user));

How can I solve this problem?

what's the point for having observableArray with null value

ebram khalil
– ebram khalil

2013-10-31 13:43:35 +00:00
Commented Oct 31, 2013 at 13:43 — ebram khalil
– ebram khalil, Commented Oct 31, 2013 at 13:43

jj689 · Accepted Answer · 2013-10-31 13:43:23Z

1

If you want to clear your observable array and then push to it do not use self.roomMembers(null) instead use self.roomMembers([])

edited Oct 31, 2013 at 13:43

answered Oct 31, 2013 at 13:38

jj689

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pax162 · Accepted Answer · 2013-10-31 13:38:24Z

1

To clear the observable array you can do self.roomMembers([]), as @jj689 stated, or you can use the ko removeAll method: self.roomMembers.removeAll() . removeAll will also return current values as an array.

answered Oct 31, 2013 at 13:38

pax162

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