ansaurus

Question

Answer 1

+14 A:

When you write this line:

window.onload = addelement();

...you are not actually assigning addelement to window.onload. You are executing addelement, then assigning the result to window.onload.

Change the line to this:

window.onload = addelement;

cbp 2009-01-08 06:56:17

Answer 2

+4 A:

cbp has already posted the correct answer: the function "addelement()" is in javascript also an object, "addelement".

when you say,

x = addelement() ;

you assign the value returned by addelement() (in this case, the return value will be null) to the variable x.

when you say,

x = addelement ;

you assign the function addelement() to variable x.

in assigning addelement to the onload event, you want the function to be called when the event occurs. so you write it without the brackets.

window.onload = addelement ;

(just a clarification, because jorge has already given a correct answer, but the reason might not be obvious.)

Chris Burgess 2009-01-08 07:05:42

document.getElementById fails in a function