Comparing squaring.

square_comparison.js

//example1.js
const func1 = (foo, bar)=> {
  const num1 = Math.pow(foo, 2)
  const num2 = Math.pow(bar, 2)
}

//example2.js
const func1 = (foo, bar)=> {
  const num1 = foo **2
  const num2 = bar **2
}

//example1.js
const square = (data) => data * data
...
const func1 = (foo, bar)=> {
  const num1 = square(foo)
  const num2 = square(bar)
}