prevent read/write to a variable at the same time in jquery

Question

I have a global variable in jquery. Two diffirent functions reading and modifying this variable in runtime.

One jquery function is reading value from this variable on every 2000 seconds and resettng it. And, a SignalR method updating this variable whenever it gets any update from server.

Is there any way to lock that variable to others while reading or writing to it?

javascript follows a single threaded execution(except workers) so there is no way there will be simultaneous modification of a variable — Arun P Johny, Feb 07 '14 at 16:56
@Arun, if two functions attempt to change the variable at the same time? — s.k.paul, Feb 07 '14 at 17:01
javascript will not execute 2 functions at the same time.... it uses a queue system to queue executions where it will be executed one after another — Arun P Johny, Feb 07 '14 at 17:04

score 2 · Accepted Answer · edited May 23 '17 at 11:49

2

Javascript follows a single threaded execution pattern(except web workers) so there is no way for simultaneous modification/read of a variable.

Also read this

edited May 23 '17 at 11:49

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answered Feb 07 '14 at 17:08

Arun P Johny

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Just for completeness, web workers do not share data (everything is copied around), so locking is not necessary even in that case. – Frédéric Hamidi Feb 07 '14 at 17:09

prevent read/write to a variable at the same time in jquery

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