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To use your browser's debugging tools, use the inspect element function of your browser on any question with an execute button. The console will catch any errors, and you execute button executes the JavaScript locally in your browser, which means that the debugging tools will be able to console.log variables to the console as wellcatch errors and inspect variables.
Insert "console.log(<object>)" in your code, hit execute, and you'll be able to interactively explore its contents.
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