Enums allow us to create named constants. It is a simple way to give more friendly names to numeric constant values. An enum is defined by the keyword enum, followed by its name and the members.
Consider the following example that defines an enum Team with four values in it.
enum Team {
Alpha,
Beta,
Gamma,
Delta
}
let t: Team = Team.Delta;
By default, the enums start the numbering at 0. You can override the default numbering by explicitly assigning the values to its members.
TypeScript also lets you create enums with string values as follows :
enum Author {
Anders = "Anders",
Hejlsberg = "Hejlsberg"
};
