<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JavaScript let in loops</title>
</head>
<body>
<script type="application/javascript;version=1.7">
let i = 1;
console.log("start----", i);
function callme() {
for( i = 1; i < 5; i++ ) {
console.log("looping time----",i); // i visible on here
};
console.log("function end----", i);
}
callme();
console.log("end----", i); // i not define
</script>
</body>
</html>
