How to 🚀 create our own prototype in JavaScript.

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How to create our own prototype in JavaScript.

Steps to follow:

• Define the function.

  function Bill(UserName, Cost) {
    this.UserName = UserName;
    this.Cost = Cost; 
  }

• Create the prototype.

  Bill.prototype.gst = function(tile) {
      return (tile / 100) * this.Cost;
  }
  
  Bill.prototype.totalCost = function(tile) {
     return this.gst(tile) + this.Cost;
  }

• Create the object.

  const Sanjay = new Bill("Sanjay", 555);

• Use the prototype of your object.

  console.log(Sanjay.Cost);  // 555
  console.log(Sanjay.gst(20));  // 111
  console.log(Sanjay.totalCost(20));  // 666