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es let2

2024-08-31 00:46:34   218人阅读

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <script src="js/browser.min.js" type="text/javascript" charset="utf-8"></script>
        <script type="text/javascript">
            "use strict"
            function f(){
                let i = 0;
                {
                    let i = 5;
                }
                console.log(i);
            }
            
            f();//0
            
            {{{{{let insane = ‘hello word‘}}}}}
            
            function ff(){
                console.log(‘外面‘);
            }
            (function(){
                if(true){
                    function ff(){
                        console.log(‘里面‘);
                    }
                }
                
                ff();    //里面
            })();
            
            {
                let a = ‘aaa‘;
                function fff(){
                    console.log(a);
                    return a;
                }
            }
            
            //fff();    //报错
            
            let ffff;
            {
                let a = ‘secret‘;
                ffff = function(){
                    console.log(a);
                    return a;
                }
            }
            ffff();
        </script>
    </body>
</html>

 

es let2


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