I met a good book

To me at this stage, JS encountered a bottleneck learning.

Last night was even a good book, my appetite for now ~

Try closure of debugging in chrome.

python -m http.server

<script>
    var fn;
    function foo() {
        var a = 2;
        function baz() {
            console.log(a);
        }
        fn = baz;
    }
    
    function bar() {
        fn();
    }
    
    foo();
    bar();
    

    var name = "windows";

    var p = {
        name: 'Peter',
        getName: function() {
            var self = this
            return function() {
                return self.name;
            }
        }
    }

    var getName = p.getName();
    var _name = getName();
    console.log(_name);
    
    
</script>