use var in function javascript code example
Example 1: how to write a variable in js
//choose the best for your solution
var myVariable = 22; //this can be a string or number. var is globally defined
let myVariable = 22; //this can be a string or number. let is block scoped
const myVariable = 22; //this can be a string or number. const is block scoped and
Example 2: how to define variable in javascript
var <variable-name>;
var <variable-name> = <value>;