Question

I have the below code:

function Class () {
  this.method = function () {
    alert('method');
  };
}

new Class().method();

And it works fine, but as I understand, for each new object will be created the function. Is there right way to do this?

​

Answer 1

Place initialization of instance varibales into the Class function, and shared methods and variables in prototype property:

function Class (var1, var2) {
  this.var1 = var1;
  this.var2 = var2;
}

Class.prototype.method = function () {
  alert(this.var1 + ' ' + this.var2);
};

new Class('var1', 'var2').method();
​