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Start your free trialAlex Weissman
720 PointsWhy do we need to catch and re-throw the error in getJSON?
In purely synchronous programming, there is no point in catching an exception just to re-throw it without doing anything else.
1 Answer
Steven Parker
231,268 PointsThe instructor explains in the video, "The benefit of doing this is that any errors caught here will bubble up and be caught by try catch blocks or catch methods at the top level."
Then, later in the video a code example is provided to show this being used in practice.
JASON LEE
17,352 PointsJASON LEE
17,352 PointsI still don't get it. Even without the try catch in the function getJSON(url), it will have the same behavior, where the error caught will bubble up and be caught by try catch block from the 'parent' function.
Steven Parker
231,268 PointsSteven Parker
231,268 PointsI see what you mean — why not just leave off the "try" completely. Now I'm also questioning the value of having one unless you were planning to add some code later between the "catch" and the "throw".