Kkqxe2P8

1// block scope
2
3// com var
4const es = () => {
5	var js = 'John Doe'
6	    if(true){
7		var js = 'John Resig'
8		console.log(js)
9		// -> John Resig
10	}
11	console.log(js)
12	// -> John Resig
13}
14
15es()
16
17// com let
18const es6 = () => {
19	let js = 'John Doe'
20	    if(true){
21		let js = 'John Resig'
22		console.log(js)
23		// -> John Resig
24		}
25	console.log(js)
26	// -> John Doe
27}
28
29es6()