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JavaScript DOM Scripting By Example Improving the Application Code Refactor 2: Readable Branching Logic

Posted by Stefan Schraberger
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Stefan Schraberger
Front End Web Development Techdegree Student 8,873 Points

Why cant we use dot notation here : nameActions[action]();

see title

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Dot notation is great when you know the name of the attribute you want to access.

But here, the word "action" is not an attribute name, but a string variable that contains the attribute name. We don't know while writing the code what the actual attribute will be when it runs, so dot notation cannot be used here.