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                <h2>exec他是屬于正則表達式的方法 主要作用是,可以在目標字符串中進行一次匹配 返回一個數組。</h2> 語法 ``` 新變量名稱=/正則/; 新變量名稱.exec(字符串變量名稱); ``` 代碼案例 ``` <script type="text/javascript"> var ab="aaDFDFSGFDSFaSDFSFAAdsfsfaaafdsfegewaaa"; var a=/a/; var ss= a.exec(ab); console.log(ss); </script> ```
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