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[JS] call

caution

This is not original content, but just a note from articles I read.

Intro​

The call() method calls the function with a given this value and arguments provided individually.

function Product(name, price) {
  this.name = name;
  this.price = price;
}

function Food(name, price) {
  Product.call(this, name, price);
  this.category = 'food';
}

console.log(new Food('cheese', 5).name);
// Expected output: "cheese"

Reference​