jquery - How can I trigger a keyup event and pass the key? -

i have field "corrects" type. have code written prevents functionality when arrow keys pressed:

handlekeyup: function(e) {     var arrowkeys = _.range(37, 41),         key = e.which;      // allow user move cursor keyboard     if ($.inarray(key, arrowkeys) < 0) {         this.removeinvalidcharacters();     } }, 

we write unit test this; however, can't figure out how pass e.which via $input.trigger('keyup'). know second parameter of trigger allows send "extra options"; however, passes values more values handlekeyup function. ideas?

try -

var e = $.event("keyup"); e.which = 37;  $input.trigger(e); 

http://api.jquery.com/category/events/event-object/

as of jquery 1.6, can pass object jquery.event() , properties set on newly created event object.

// create new jquery.event object specified event properties. var e = jquery.event("keydown", { keycode: 64 });  // trigger artificial keydown event keycode 64 jquery("body").trigger( e );