17 lines
		
	
	
		
			161 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			161 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| 
 | |
| 
 | |
| ```
 | |
|     var arr = [1, 2, 3];
 | |
| 
 | |
|     fun(arr);
 | |
|     console.log(arr);
 | |
| 
 | |
|     function fun(a) {
 | |
|         a = [];
 | |
| 
 | |
|     }
 | |
| ```
 | |
| 
 | |
| 上方代码的打印结果是:[1,2,3]
 | |
| 
 |