Lecture 170:- Let

let is a keyword in JavaScript that allows you to declare a block-scoped variable that can be reassigned. This means that you can use the same variable name for different values in different parts of your code without the values interfering with each other.

Here's an example:

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let x = 10; if (true) {  let x = 20;  console.log(x); // output: 20 } console.log(x); // output: 10

In this example, we declare a variable x with the value of 10. Then, we use let to declare another variable x inside an if statement with the value of 20. When we log the value of x inside the if statement, we get 20. When we log the value of x outside the if statement, we get 10, which is the original value of x. This demonstrates how let allows us to use the same variable name for different values in different parts of our code without the values interfering with each other.