Javascript Last character missing on OnKeyPress event

问题

function h(x)
{
    alert(x);
}

<input onkeypress=h(this.value) type=text>

when i press 'a' alert empty
when i press 'b' after 'a' =>ab alert only 'a' and i want 'ab'
when i type 'abcd' it alert 'abc' only and i want 'abcd'

回答1:

your event fires before letter is registered. you should use onkeyup event. It kicks-in after you release key

回答2:

Javascript:

function h(x) 
{
   alert(x); 
}

HTML Code:

<input onkeyup=h(this.value) type=text>

回答3:

var unicode=e.keyCode? e.keyCode : e.charCode;
typing = document.getElementById('textbox').value + String.fromCharCode(unicode);

来源：https://stackoverflow.com/questions/5340751/javascript-last-character-missing-on-onkeypress-event