dynamic adding of event targets javascript

Question

i have a code snippet like this.

$(document).on("click", event_target, some_function);

DEFAULT BEHAVIOUR:

If i pass event_target as null or empty string, all clicks on the document are handled.

DESIRED BEHAVIOUR

I want that if event_target is an empty string the event shouldn't be handled.

CURRENT APPROACH

Now i just add a if statement in the handler and if target is document i simply do nothing.

Is there a better approach to avoid unnecessarily calling the handler for all clicks?

I don't think so... what is wrong with your current approach — Arun P Johny
– Arun P Johny, Commented Jun 9, 2015 at 3:33
@ArunPJohny Well i thought i wanted to avoid the overhead of calling the handler everytime i click or tap somtehing in the entire document — Vikash Balasubramanian
– Vikash Balasubramanian, Commented Jun 9, 2015 at 4:00

vbm · Accepted Answer · 2015-06-16 09:04:18Z

2

Why don't you just do what you're currently doing inside an if block? Set up the click handler only if event_target is not an empty string.

if (event_target !== '')
    $(document).on("click", event_target, some_function);

answered Jun 16, 2015 at 8:50

vbm

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