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                            # 字符串
| 屬性和方法|   說明|
| -------- | --------| 
| length| 獲取長度|
| charAt(index)| 獲取長度|
| indexOf(searchValue[, fromIndex])| 獲取索引|
| search(regexp)| 獲取正則匹配索引|
| match(regexp)| 獲取正則匹配內容|
| replace(regexp|substr, newSubstr|function)| 替換內容|
| substring(indexA[, indexB])| 截取內容|
| slice(beginSlice[, endSlice])(可傳入負數)| 截取內容|
| substr(start[, length])| 截取內容|
| split(separator[, limit])| 分割字符串|
| toLowerCase()| 變為小寫|
| toUpperCase()| 變為大寫|
| String()| 變為字符串|
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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