Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

Note: the function above may be referenced before it has been defined. Functions are also values in JavaScript; they can be stored in variables (just like numbers, strings, etc ...) and given to other ...

Review declaring a function using a function expression Declare a function using arrow syntax Describe situations where arrow functions are used Evaluate the expression function() { return 'bar' }, ...

1. the basic javascript functionthe simplest way to declare a function in javascript. in below example. we have written a simple function called abcd(x,y) which is simply taking two parameters x and y ...

This happens because the variable declaration is scoped to the if statement. In JavaScript, though, the same code is perfectly fine: This is because JavaScript scopes your variables to functions and ...