javascript - Detecting input change in jQuery? -

when using jquery .change on input event fired when input loses focus

in case, need make call service (check if value valid) input value changed. how accomplish this?

updated clarification , example

examples: http://jsfiddle.net/pxfunc/5kpej/

method 1. input event

in modern browsers use input event. event fire when user typing text field, pasting, undoing, anytime value changed 1 value another.

in jquery this

$('#someinput').bind('input', function() {      $(this).val() // current value of input field. }); 

starting jquery 1.7, replace bind on:

$('#someinput').on('input', function() {      $(this).val() // current value of input field. }); 

method 2. keyup event

for older browsers use keyup event (this fire once key on keyboard has been released, event can give sort of false positive because when "w" released input value changed , keyup event fires, when "shift" key released keyup event fires no change has been made input.). method doesn't fire if user right-clicks , pastes context menu:

$('#someinput').keyup(function() {     $(this).val() // current value of input field. }); 

method 3. timer (setinterval or settimeout)

to around limitations of keyup can set timer periodically check value of input determine change in value. can use setinterval or settimeout timer check. see marked answer on question: jquery textbox change event or see fiddle working example using focus , blur events start , stop timer specific input field