Idiomatic jQuery delayed event (only after a short pause in typing)? (aka timewatch/typewatch/keywatch)
I frequently use the following approach, a simple function to execute a callback, after the user has stopped typing for a specified amount of time::
$(selector).keyup(function () { typewatch(function () { // executed only 500 ms after the last keyup event. }, 500);});Implementation:
var typewatch = (function(){ var timer = 0; return function(callback, ms){ clearTimeout (timer); timer = setTimeout(callback, ms); };})();I think this approach is very simple, and it doesn't imply any global variables.
For more sophisticated usages, give a look to the jQuery TypeWatch Plugin.
Have a look at the excellent Text Change Event plugin from Zurb, purveyors of the highest quality jQuery goods.