Bind Method Javascript

• What is bind keyword?

  • The bind() method creates a new function that, when called, has its this keyword set to provided value.
  • It also allows you to partially apply arguments to the function.

• Example 1:

  const person = {
  	firstName: "John",
  	lastName: "Doe",
  	getFullName: function() {
  		return this.firstName + ' ' + this.lastName;
  	},
  };
  
  const logFullName = person.getFullName.bind(person);
  
  logFullName(); // outputs: "John Doe"
  

• Example 2:

var obj = { name: "Chaitanya" };

function sayHello(age, profession) {
	return "Hello " + this.name + " is " + age + " and is an " + profession;
}

const bindFunc = sayHello.bind(obj);

console.log(bindFunc(22, "Software Engineer"));
console.log(bindFunc(22, "Bodybuilder"));