Lambda Expressions in JavaScript

A lambda expression is a concise way to define a short function in programming. It’s commonly found in modern languages like Python, Ruby, JavaScript, and Java. Essentially, it’s just a small piece of code that creates a function.

Thanks to functions being treated as objects in JavaScript, they can be passed to and returned from other functions, allowing the creation of lambda functions.

Example 1: In this example, the arrow function is used for showing lambda expression.

let multiply = (a, b) => a * b;
console.log(multiply(5, 9));

45

Example 2: In this example, an anonymous function is used which shows the lambda expression.

const Names = [
      'Mansi',
      'Gaurav',
      'Akansha',
      'Sanya'
];

console.log(Names.map(Names => Names.length));

[ 5, 6, 7, 5 ]

Advantages of Lambda Functions:

• Concise Syntax
• Useful in methods like reduce and map. We do not have write a function and think of a name, we can simply provide a lambda expression.
• Automatically bind this to the surrounding context, eliminating common issues when dealing with callbacks

M

mansigeekso9ii

Follow

Improve