How to Use If-Else and Lambda Expressions in JavaScript?

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In JavaScript, you can use if-else statements to conditionally execute code based on a given condition, and you can use lambda expressions to create anonymous functions. Here’s an example code snippet that combines both concepts:

let x = 10;

// if-else statement
if (x > 5) {
  console.log("x is greater than 5");
} else {
  console.log("x is less than or equal to 5");

// lambda expression
let add = (a, b) => a + b;

console.log(add(2, 3));

In the above code, the if-else statement is used to determine whether the value of x is greater than 5. If it is, the first console.log statement will be executed; otherwise, the second console.log statement will be executed.

The lambda expression is used to create a function that takes two arguments and returns their sum. The arrow (=>) is used to separate the function parameters from the function body. The lambda expression is assigned to the add variable, which can then be called like a regular function.

The output of the above code will be:

x is greater than 5

Note that lambda expressions are a more concise way of defining functions in JavaScript, but they are not always the best choice depending on the complexity of the function you want to define. If-else statements are a fundamental part of the language and are often used to conditionally execute code based on a given condition.

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