lovecoding
/
web0331


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        /**
         * Symbol：独一无二的
         * 避免了命名的冲突
         * 不能做运算
         * 没有办法循环
        */
       let s1 = Symbol();
       let s2 = Symbol();
       console.log(s1 + 1);
       console.log(s2)
       if(s1 === s2) {
        console.log("等")
       } else {
        console.log("不等")
       }
    </script>
</body>
</html>