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                            ## 判斷變量是否為布爾類型
> yunj.isBool(val)

說明：判斷變量是否為布爾類型。返回bool類型結果。

> 參數

| 參數 | 類型 | 必須 | 說明 |
| --- | --- | --- | --- |
| val | mixed | 是 | 變量 |

> 示例：
```javascript
layui.use(['yunj'],function (){
    let val=false;
    console.log(yunj.isBool(val));    // true

});
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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