How to trigger onLoad function when ui page is called with ui action?

[Jake Sadler]

I have a ui page that is called when a ui action is clicked. The UI page is a timer but when the ui page is called the timer doesn't start automatically. How do I trigger onload client scripts for the UI page?

[PeriyasamyP]

You can just write your onload script in client script section. As below, it will run onload.