April 2018
Beginner
536 pages
13h 21m
English
In the first chapter, we introduced the possibility of declaring functions with (named functions) or without (unnamed or anonymous functions) explicitly indicating their name, but we didn't mention that we were also using two different types of functions.
In the following example, the named function greetNamed is a function declaration, while greetUnnamed is a function expression. For now, please ignore the first two lines, which contain two console.log statements:
console.log(greetNamed("John")); // OK
console.log(greetUnnamed("John")); // Error
function greetNamed(name: string): string {
return `Hi! ${name}`;
}
let greetUnnamed = function(name: string): string {
return `Hi! ${name}`;
};