variable javascript

//choose the best for your solution
var myVariable = 22; //this can be a string or number. var is globally defined

let myVariable = 22; //this can be a string or number. let is block scoped

const myVariable = 22; //this can be a string or number. const is block scoped and can't be reassignedvar num = 1://You can make a variable by using:
var variable-name = 'defenition of the variable';
// Or you can use
let variable-name = 'defenition of the variable';var user_name = prompt("Please enter your name:", "Type here");
alert("Hello " + user_name);//Assigns the value bar to the variable foo
var foo = bar;var variable1 = "some variable content";