A scope example for sharing...

Scope Example 1

//varscope
var x1 = 3;
for (var y1=x1;y1>0; y1--) {
	var x1 = y1;
	console.log(x1);
	console.log(y1);
}
console.log(x1);
console.log(y1);


//letscope
var x = 3;
for (let y=x;y>0; y--) {
	let x = y;
	console.log(x);
	console.log(y);
}
console.log(x);
console.log(y);