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Old February 22nd, 2007, 01:21 PM
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Default Difficulty writing javascript to access dom

Hi There;

I am trying to add some onClick functionality to a group of menu items in a template-based site by creating a javascript function that locates the a tag in this group and adds a new attribute.

It's not working :( Could someone please be kind to look at what i've written and tell me what i'm doing wrong?

Header script:

<script type="text/javascript">
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {

function addAtt() {
  if ( !document.getElementById ||
        !document.createElement ||
        !document.getElementsByTagName ) {
  var primaryDiv = document.getElementById("navlist");
  var primarylinks = primaryDiv.getElementsByTagName("a");
  for ( var i = 0; i < primarylinks.length; i++ ) {


and in the body:
<div class="secondnav">
    <ul class="links" id="navlist">
        <li class="first menu-2-1-49">
            <a href="#" class="menu-2-1-49">style</a></li>

<div class="secondnav" id="d6" style="display:none">
    <ul class="links" id="subnavlist">
        <li class="first menu-2-1-49">
            <a href="/dave/node/3" class="menu-2-1-49">style</a></li>
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Old February 23rd, 2007, 07:32 AM
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Not sure but something jumped out at me straight away:

this line:

if (typeof window.onload != 'function') {

Should surely be:

if (typeof(window.onload) != 'function') {

Not even sure that will work TBH.

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Old February 23rd, 2007, 11:25 AM
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You actually don't have to place parenthesis around window.onload. typeof, as a language construct does not require these, since it is not a function.

Personally, I always put those in, but they're technically optional.


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