This is related to an earlier question that I posted:

Can't edit page after adding custom web part!

Basically, I have created a web part with some javascript. When I add this web part to a page, I can no longer click on the edit icon to make changes to the page. If I retract the web part I can edit again.

I have created a slimmed down version that reproduces the problem below:

<script type="text/javascript">
    function test() {
    window.onload = test;
<input id="tb_AC" runat="server" /> 
<br />

If I comment out the window.onload = test; then edit starts working again. Thoughts?


The reason is that you are hijacking the onload event from the SharePoint javascript.

See this post for help:

Stop The Window.Onload Madness.

  • Both you and Phil Haack rock! – Abe Miessler Apr 24 '11 at 19:29

SharePoint also provides the _spBodyOnLoadFunctionNames function, which allows you to specify what script to run on page load. If you specify your function there, it is less likely to interfere with SharePoint's own script.

  • Does this work in 2010? I read that it did not as that was my first thought... – spevilgenius Apr 25 '11 at 20:35

Could you not just use jQuery and the document.ready() function?

  • Possibly, can you give me an example of what you are talking about? – Abe Miessler Apr 24 '11 at 19:15
  • If you have jQuery you would use this in lieu of window.onload $(documnet).ready(function() { alert("hello!"); }); – spevilgenius Apr 25 '11 at 20:38

Try window.onload += test; Instead, so you dont overwrite what other javascripts (such as the ribbon) have hooked up on the event

  • That didn't work. If you read Phil Haacks article that David links to he mentions that you can't do that. – Abe Miessler Apr 24 '11 at 19:48
  • JavaScript doesn't natively support multiple handlers. – Rex M Apr 24 '11 at 23:36
  • 2
    JavaScript actually DOES natively support multiple handlers, though it doesn't have the += syntax. You have to call the DOM methods attachEvent/addEventListener (depending on which browser you're in). – Zach Apr 25 '11 at 1:00

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