The prototype property allows you to add properties and methods to an object.
Example
function employee(id:number,name:string) {
this.id = id
this.name = name
}
var emp = new employee(123,"Smith")
employee.prototype.email="smith@abc.com"
console.log("Employee 's Id: "+emp.id)
console.log("Employee's name: "+emp.name)
console.log("Employee's Email ID: "+emp.email)
On compiling, it will generate the following JavaScript code −
//Generated by typescript 1.8.10
function employee(id, name) {
this.id = id;
this.name = name;
}
var emp = new employee(123, "Smith");
employee.prototype.email = "smith@abc.com";
console.log("Employee 's Id: " + emp.id);
console.log("Employee's name: " + emp.name);
console.log("Employee's Email ID: " + emp.email);
Its output is as follows −
Employee’s Id: 123 Emaployee’s name: Smith Employee’s Email ID: smith@abc.com
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