As I begin to develop more and more complicated JavaScript solutions, I wonder what sort of options JavaScript gives me to monitor changes in my environment. I’ve seen so many solutions that constantly ping whatever element they are wanting to monitor, but for any sort of resource heavy application (or for any case depending on the standards of the developer) that becomes bloated and too hackish to be a viable method. Which brings me to my question, "What are the limitations of JavaScript’s onchange event?". Specifically, right now I’m trying to monitor the size of the window. Is there a way to utilize the .onchange event for things like this? How would you solve this?
I’m very interested to hear what everyone has to say.
The size of the window can be monitored with onresize.
The onchange event, as Rahul says, applies to fileupload, select, text and textarea. However, it only fires once focus is shifted away from the item and onto something else, and the content has changed.