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TypeScript | String Prototype Property

  • Last Updated : 18 Jun, 2020

The Prototype Property() in TypeScript which is used to add properties and methods to an object. 
Syntax:

string.prototype 

Return Value: This method does not returns any value. 
Below examples illustrate the String Prototype property in TypeScript
Example 1: 

JavaScript




function Person(name:string, job:string, yearOfBirth:number)
    {    
        this.name= name; 
        this.job= job; 
        this.yearOfBirth= yearOfBirth; 
    
      
        
    // Driver code
    var emp = new Person("Smith", "ABC",12214) 
      
    // This will show Person's prototype property.  
    console.log(emp.prototype);

Output: 



Example #2: 
 

JavaScript




function Person(name:string, job:string, yearOfBirth:number)
    {    
        this.name= name; 
        this.job= job; 
        this.yearOfBirth= yearOfBirth; 
    
      
    // Driver code
    var emp = new Person("Smith", "ABC",12214) 
  
    // This will show Person's prototype property. 
    Person.prototype.email = "abc@123.com"
       
    console.log("Person's name: " + emp.name); 
    console.log("Person's Email ID: " + emp.email);

Output: 




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