Apply Method Javascript

• What is apply?
  • apply() method is a function that allows you to call another function with a specified this value and arguments provided as an array.
• Syntax

  function.apply(thisArg, argsArray);
  

  • thisArg: The value to be used as this when calling the function.
  • argsArray: An array (or array-like object) containing the arguments to be passed to the function.
• Example 1:

  function greet(greeting) {
  	console.log(greeting + ", " + this.name);
  }
  
  const person = {name: "Alice"};
  
  greet.apply(person, ["Hello"]);
  

• Example 2:

var obj = { name: "Chaitanya" };

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

console.log(sayHello.apply(obj, [22, "Software Engineer"]));