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This article mainly introduces how to use the keyword function to declare variables in es6, which has a certain reference value, and interested friends can refer to it. I hope you can learn a lot after reading this article.

Declare variables with the keyword function

Function add (a) {var sum = a + 1; return sum;}

A new variable named add is declared and assigned a function definition

The content between {} is assigned to add

The code inside the function is not executed, but is stored in variables for future use

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