javascript - what is one example of the usage of the jquery noop function -


extending link what use of jquery.noop() function?

you can use empty function when wish pass  around function nothing.  useful plugin authors offer optional callbacks;  in case no callback given, jquery.noop execute.

what mean plugin authors offer optional callbacks, example do.

for example, plugin optional done fail , callbacks:

options: {     done: $.noop,     fail: $.noop,     always: $.noop }

now plugin author can assume there callback defined each if developer using plugin doesn't pass one.

https://github.com/jquery/jquery/blob/1.9-stable/src/core.js#l577


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