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      VB.net 2010 視頻教程 VB.net 2010 視頻教程 VB.net 2010 視頻教程
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      首頁 > 網站開發 > JavaScript >
      • JavaScript教程之語句

      • 2015-01-16 22:06 來源:未知
      語句(相關javascript教程)
      下面將開始討論 JavaScript 基本編程命令,或者叫“語句”。
      注釋
      像其他所有語言一樣,JavaScript 的注釋在運行時也是被忽略的。注釋只給程序員提供消息。
      JavaScript 注釋有兩種:單行注釋和多行注釋。單行注釋用雙反斜杠“//”表示。當一行代碼有“//”,那么,“//”后面的部分將被忽略。而多行注釋是用“/*”和“*/”括起來的一行到多行文字。程序執行到“/*”處,將忽略以后的所有文字,直到出現“*/”為止。
      提示 如果你的程序需要草稿,或者需要讓別人閱讀,注釋能幫上大忙。養成寫注釋的習慣,能節省你和其他程序員的寶貴時間,使他們不用花費多余的時間琢磨你的程序。在程序調試的時候,有時需要把一段代碼換成另一段,或者暫時不要一段代碼。這時最忌用 Delete 鍵,如果想要回那段代碼怎么辦?最好還是用注釋,把暫時不要的代碼“隱”去,到確定方法以后再刪除也不遲。
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