JAVASCRIPT

less than or equal to javascript

if(a <= 5){
   yourFunction();
}

greater than x but less than y javascript

let X = 4
let Y = 5
let Z = 8

if (Y < Z && Y > X) {
    console.log(`Y is less than Z but greater than X, or mathematically
	'X < Y < Z' or 'Z > Y > X'
	`);
}

less than equal to in javascript

| <= | less than or equal to |	x <= 8 | true |

greater than or equal to javascript

x >= y

greater than x but less than y es6

let X = 4
let Y = 5
let Z = 8

if (Y < Z && Y > X) {
    console.log(`Y is less than Z but greater than X, or mathematically
	'X < Y < Z' or 'Z > Y > X'
	`);
}