variable in jquery code example

Example 1: javascript declare a variable

//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 reassigned

Example 2: jquery declare variable

var foo = 'some string';

// Popular pattern for variables that contains the result of a call in HTML:
var $foo = $('.foo'); // it's a valid name in jQuery

Example 3: javascript define variable

var variable1 = "some variable content";

Example 4: jquery use variable in string

console.log(`${a + b}`);