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:
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