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                            test是RegExp的方法，參數是字符串，返回值是boolean類型。
```js
var str='sad13123dfa4v564d5f8fb5sf'; 

var re=/\d+/g; 

alert(re.test(str));
```
*****
match是String的方法，參數是正則表達式，返回值是數組。 
```js
var re=/\d+/g; 

alert(str.match(re)); 
```
```
var str = 'haj123sdk54hask33dkhalsd879';
var re = /\d+/g; // \d代表數字，\d+代表至少一個。g代表全局
console.log(str.match(re)); //123,54,33,879
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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