Is it true that Javascript's onclick global event handlers fire prior to the page being fully loaded

I'm trying to set a global event handler for an image, but running into issues.

When I use the code 

document.getElementById("post_image").onclick = photoEnlarge;
, it returns an error saying Uncaught TypeError: Cannot set property 'onclick' of null. This is because the image with the ID post_image is being loaded via window.onload and createElement("img")

How can I fix this issue and make the above code work without any errors?

Additionally, I have a question regarding the proper use of global event handlers. Is it correct to place them directly before the closing body tag along with other JavaScript?

javascript

Answer №1

It is important to remember that you should add the handler after creating the element. If you are inserting the element within the onload function, be sure to include the onclick handler in the same code block.

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