chuck
/
es6-11study


			
				
					
						
						
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<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>
        //includes 返回布尔
        const arr = [1,2,3]
        console.log(arr.includes(2))
        //indexOf 不存在返回-1 存在返回索引

        //** 指数
        console.log(2 ** 10)
        console.log(Math.pow(2,10))

    </script>
</body>
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