Create a variable with every new function javascript

In JavaScript, you can create a variable with a new function by using the let or const keyword followed by the variable name and the assignment operator (=). Here's an example:

let myFunction = function() {
  console.log("Hello World!");
};

This creates a new variable myFunction and assigns it a function that logs "Hello World!" to the console.

Alternatively, you can use the function keyword to declare a function and assign it to a variable:

let myFunction = function() {
  console.log("Hello World!");
};

Or, you can use an arrow function:

let myFunction = () => {
  console.log("Hello World!");
};

Note that in all cases, the variable myFunction is created and assigned a function value. You can then call the function by using the variable name, like this:

myFunction(); // Output: "Hello World!"

It's worth noting that in JavaScript, functions are first-class citizens, which means they can be assigned to variables, passed as arguments to other functions, and returned as values from functions. This makes functions a powerful tool for building complex and dynamic code.