About
Within the scratchpad (shift+f4), you can write, run, and examine the results of code that interacts with the web page.
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Management
Run
The selected code of the whole code
Inspect
The Inspect option executes the code just like the Run option; however, after the code returns, an object inspector is opened to let you examine the returned value.
Display
REPL: The Display option executes the selected code, then inserts the result directly into your Scratchpad editor window as a comment.
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Reload And Run
See Execute menu. It first reloads the page, then executes the code when the page's “load” event fires.