[Javascript][HTML] onkeypress & onkeydown & onkeyup

onkeypress : Support less key, only alphabet can trigger.

onkeydown and up : Support same key.

The different is if want continues determine. "up" is more better.

If want press key down then support must use down.

JavaScript : function handleKeyPress(e,form) { var key=e.keyCode || e.which; if (key==13) form.submit(); }

HTML : onkeyup="handleKeyPress(event,this.form)"