To know the value of a function and use a proper boolean may conclude that it is easier to distinguish which one is not real to begin with.

Overview

let myVariable = 'I Exist!';

if (myVariable) {
   console.log(myVariable)
} else {
   console.log('The variable does not exist.')
}

• The code block in the if statement will run because myVariable has a truthy value; even though the value of myVariable is not explicitly the value true, when used in a boolean or conditional context, it evaluates to true because it has been assigned a non-falsy value.
• So which values are falsy— or evaluate to false when checked as a condition? The list of falsy values includes:
  • 0
  • Empty strings like "" or ''
  • null which represent when there is no value at all
  • undefined which represent when a declared variable lacks a value
  • NaN, or Not a Number

Code Snippets

let username = '';
let defaultName;

if (username) {
  defaultName = username;
} else {
  defaultName = 'Stranger';
}

a11y myths

Accessibility can only be tested by disabled people

Well, usually disabled people are the best testers - they use assistive technologies full time. However, everyone can learn how to test websites for accessibility.