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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>
- <!--
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- js数据类型
- 基本数据类型：
- null undefined string boolean number
- 引用数据类型
- object(object/array/function)
- 堆和栈
- 堆：引用数据类型
- 栈：基本数据类型 引用的指针
- -->
- <script>
- var a = 6;
- b = a;
- b = 25;
- console.log(a,'a')
- var obj = {
- aa:11,
- bb:22,
- cc:33
- }
- var obj1 = obj;
- obj1.aa = 55;
- console.log(obj);
- </script>
- </body>
- </html>
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