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                            [toc]

####toLowerCase() [把字符串轉換為小寫]


####toUpperCase() [把字符串轉換成大寫]


####substr() [從字符串中截取指定長度的字符]


####split() [把字符串分割為數組]


####replace() [替換字符串中匹配的字符]


####substring() [截取字符串中指定長度的字符]


####length [獲取字符串長度]


####search() [搜索字符串中與正則表達式/字符相匹配的第一個匹配的位置]


####match() [在字符串中搜索指定的值，或與正則表達式的匹配的值]


####trim() [去除字符串兩邊的空白，空格]


####indexOf() [返回指定的字符串值在字符串中首次出現的位置]


####charAt() [返回指定位置的字符]


####charCodeAt() [返回指定位置的字符的 Unicode 編碼]
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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