How many window.onload

You would also need to add all the functions that need access to the onload method to the body tag of every page. For a large website, this would be too tedious and too difficult to maintain.

It places several function calls in a chain, using one onload event handler. When a web page loads, all the front end code on the page is processed from top down. If you added this script to the head section of your page, for example:. In my ASP. How would I go about allowing two user controls to each execute JavaScript in the onload event?

Add multiple window. Active 3 hr before. Viewed times. Then you have DevTools page opened, check the console section. Create an empty html file, put some sample data like some paragraph, etc…, some text Then go for script section and add above code. Go to devtools and check the console section, you should see the logs on console section Note: if there is nothing there, keep the devtool windows open and refresh the page F5.

Just be patient, as you grab more experiences, things get easier and easier for you pal, no rush, try to be patient at all aspects. Onload JavaScript. Have a try, keep going on great work. Have a try. See screenshot here:. Good working, I suggest you keep some study and reading about how to debug a program, this is okay to ask for issues, but if you could the way how to debug will make you a very great dev. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.

While using W3Schools, you agree to have read and accepted our terms of use , cookie and privacy policy. Copyright by Refsnes Data. All Rights Reserved. You can not bind several functions to window. If you absolutely must have separate methods triggered as the result of window. This can be achieved with this function. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Add two functions to window. Asked 8 years, 5 months ago. Active 3 months ago. Viewed 73k times. Here is my code: window. Improve this question. Why don't you just add the functionality in the second function into the first one.

Or call the second one from the first one. Why don't you continue to use the better way for handling events - addEventListener? Then you wouldn't have overwriting problems like this — Ian.

Add a comment. Active Oldest Votes. Improve this answer. It is good and simple if IE10 and other browser support addEventListener mean adding more EventListener in addition of default handle: onload, onReadyStateChange, readystatechange, which would' not affect from using third party script.

Hope we won't have the problem of this specification mismatch in future.