Can't call keyup function of js object

Here is code http://jsfiddle.net/8ZzER/26/

I try to call the function bound to keyup but keyPres variable is null

HTML

<inp开发者_StackOverflow中文版ut id="text" name="text" type="text" onkeyup="alert('Boom')"  
       value="Key up here"/>
<input type="button" id="fire" value="fire" />

JavaScript

document.getElementById("fire").onclick=function()
{
    var textElement = document.getElementById("fire");
    var keyPres= textElement.onkeyup;
    keyPres.call();
}

Your handler is on the element with "id" value "text", but your code looks for "fire".

<input id="text" name="text" type="text" onkeyup="alert('Boom')"  
       value="Key up here"/>
<input type="button" id="fire" value="fire" />

The handler should look like:

// says "fire" in your jsFiddle
var textElement = document.getElementById("text"); 
var keyPres= textElement.onkeyup;
keyPres.call();

Well, you are assigning textElement to your button (fire) and not your text box.

http://jsfiddle.net/8ZzER/29/