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Solution Review: Check the Names

Solution Review: Check the Names

This lesson will explain the solution to the problem in the previous lesson.

We'll cover the following...

Solution #

Javascript (babel-node)
const checkName = (firstName, lastName, callback) => {
    if (!firstName) return callback(new Error('No First Name Entered'))
    if(!lastName) return callback(firstName)
    const fullName = `${firstName}` + `${lastName}`
    return callback(fullName)
}
function callback(arg){
  console.log(arg)
}

Explanation #

We need to cater to three conditions:

  1. If the first name is not given

  2. If the last name is not given

  3. If both ...