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                [TOC] ## 1.請用js去除字符串空格? ~~~ 方法一:使用replace正則匹配的方法 去除所有空格: str = str.replace(/\s*/g,""); ? 方法二:使用str.trim()方法 方法三:使用 ~~~ ### 1.正則法 ``` 去除字符串內所有的空格:str = str.replace(/\s*/g,""); 去除字符串內兩頭的空格:str = str.replace(/^\s*|\s*$/g,""); 去除字符串內左側的空格:str = str.replace(/^\s*/,""); 去除字符串內右側的空格:str = str.replace(/(\s*$)/g,""); ``` ### 2.str.trim() (無法去除中間的空格) ### 3.jquery,$.trim(str)方法
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