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JavaScript Asynchronous Programming with JavaScript Asynchronous JavaScript with Callbacks Async Programming and Callback Functions

Sandra AlSaig
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Sandra AlSaig
Front End Web Development Techdegree Student 11,652 Points

Not understanding (json)

Why is the parameter of the callback function isn't (data)? Why is it (json)? Or am I wrong in assuming that that's the same argument?

Shumin Zhou
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Shumin Zhou
Full Stack JavaScript Techdegree Graduate 31,489 Points

Hi, you can name your parameter name whatever you want, but whatever you name that parameter, it will hold a data that will pass into this function.

1 Answer

Steven Parker
Steven Parker
210,863 Points

As Shumin pointed out, the parameter name itself is not important to the operation of the function. But it's considered a "best practice" to use a name that represents the kind of content that the parameter is expected to have.

So in this case, naming it "json" is a bit more descriptive than just "data" if the contents are going to be in JSON format.