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                            # eval函數
## eval

 eval：將字符串類型的參數轉換成JS代碼，立即執行。
## 和函數的區別
> Function:需要調用函數，才會執行代碼
eval：轉換之后立即執行

<br>

```javascript
//?轉為為對象

var?jsonStr1?\='({"name":"小明","age":"18"})';

console.log(eval(jsonStr1));

//?eval()還可以進行計算

console.log(eval("1?+?2"));

console.log(eval("1?-?2"));

console.log(eval("1?/?2"));

console.log(eval("1?\*?2"));

console.log(eval("1?%?2"));
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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