chuck
/
es6-11study


			
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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>

        //1.默认值c

        function add(a, b, c = 5){

            return a+b+c;

        }

        console.log(add(1,2,3))


        //2.与解构赋值结合

        // host默认值

        function connect({host='127.0.0.1',username,password,port}){

            console.log(host)

        }

        connect({

            //host:'localhost',

            username:'root',

            password:'root',

            port:3306

        })

    </script>
</body>
</html>