JavaScript Return Values

Every function returns a value, which by default is undefined.

Any function is terminated when its lines of code end, or when the execution flow finds a return keyword.

When JavaScript encounters this keyword it exits the function execution and gives control back to its caller.

If you pass a value, that value is returned as the result of the function:

const dosomething = () => {
  return 'test'
}
const result = dosomething() // result === 'test'

You can only return one value.

To simulate returning multiple values, you can return an object literal, or an array, and use a destructuring assignment when calling the function.

Using arrays:

Using objects:

More js tutorials:

• JavaScript Ternary Operator
• The String toLocaleLowerCase() method
• The Object keys() method
• How to join two arrays in JavaScript
• The Object defineProperties() method
• Work with objects and arrays using Rest and Spread
• JavaScript Object Properties
• The String charCodeAt() method
• How to trim the leading zero in a number in JavaScript