Easiest way to execute JavaScript when listitem updates?

Question

What is the easiest way, in SharePoint 2013, to execute JavaScript when listitem updates?

For example,

• Can SharePoint Designer 2013 do this?
• Is there any way which does not involve WSPs, Apps or Sandbox solutions?

Answer 1

No, workflows do not have the ability to execute javascript. You'd need to account for that on a custom edit page on saving the item, then hand off any components the workflow is supposed to do at that point.

Answer 2

You might be able to get creative:

• Workflow updates a list item
• JavaScript on masterpage pings the list, looking for this updated list item
• If found, JS does its thing

Bad side is that you have JS querying every time the page loads, but it's an async call, so shouldn't hurt too much.