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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops `do ... while` Loops

Sandra Vu
Sandra Vu
3,525 Points
Posted by Sandra Vu
Sandra Vu
3,525 Points

call a function before defining?

The code sequence in the tutorial

var randomNumber = getRandomNumber (10); ....... function getRandomNumber(upper) {..... } so within JavaScript, it is possible to call a function before defining it?

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Yes, it is possible within JavaScript. This is not true of all programming languages. We call this "hoisting". Here is some documentation from MDN on how this happens along with some examples.

You can find the documentation here

Hope this helps! :sparkles:

Sandra Vu
Sandra Vu
3,525 Points
Sandra Vu
Sandra Vu
3,525 Points

thank you, Jennifer!