lovecoding
/
W250913


			
				
					
						
						
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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>
        // var a = 10;
        // var b = a;
        // a = 20
        // console.log(b);

        // 数组和对象都是引用数据类型
        // 基本数组类型变量名和值都存储在栈内存中
        // 引用数组类型变量名存储在栈内存中值的部分为引用 值存储在堆内存中
        var arr = [1,2,3];
        var arr2 = arr;
        arr[0] = "hello";
        console.log(arr2);

        var obj = {
            name:"张三",
            age:18
        }
        var obj1 = obj;
        obj.name = "李四";
        console.log(obj1);
    </script>
</body>
</html>