Window 對象

知識 07-12

Window 對象

Window 對象表示瀏覽器中打開的窗口。

如果文檔包含框架（或標籤），瀏覽器會為 HTML 文檔創建一個 window 對象，並為每個框架創建一個額外的 window 對象。</P> <p><center> <script src="/336-1.js"></script></center></p> <p><P style="text-align:center;"><img src="https://i1.wp.com/p3.pstatp.com/large/2ebd000095f04599f8f7" img_width="15" img_height="15" inline="0" alt="Window 對象" data-index="0"></P><P style="text-align:center;"><img src="https://i1.wp.com/p3.pstatp.com/large/2ec20003d6dc79c9c23f" img_width="1280" img_height="853" inline="0" alt="Window 對象" class="mt12"></P><P><strong>注意：</strong> 沒有應用於 window 對象的公開標準，不過所有瀏覽器都支持該對象。</P><br /> <hr><P>Window 對象屬性</P> <p><center> <script src="/336-2.js"></script></center></p> <p><P><br /> <table class="border"> <tbody> <tr class="firstRow"> <th>屬性</th> <th>描述</th> </tr> <tr> <td>closed</td> <td>返回窗口是否已被關閉。</td> </tr> <tr> <td>defaultStatus</td> <td>設置或返回窗口狀態欄中的默認文本。</td> </tr> <tr> <td>document</td> <td>對 Document 對象的只讀引用。(請參閱對象)</td> </tr> <tr> <td>frames</td> <td>返回窗口中所有命名的框架。該集合是 Window 對象的數組，每個 Window 對象在窗口中含有一個框架。</td> </tr> <tr> <td>history</td> <td>對 History 對象的只讀引用。請參數 History 對象。</td> </tr> <tr> <td>innerHeight</td> <td>返回窗口的文檔顯示區的高度。</td> </tr> <tr> <td>innerWidth</td> <td>返回窗口的文檔顯示區的寬度。</td> </tr> <tr> <td>length</td> <td>設置或返回窗口中的框架數量。</td> </tr> <tr> <td>location</td> <td>用於窗口或框架的 Location 對象。請參閱 Location 對象。</td> </tr> <tr> <td>name</td> <td>設置或返回窗口的名稱。</td> </tr> <tr> <td>navigator</td> <td>對 Navigator 對象的只讀引用。請參數 Navigator 對象。</td> </tr> <tr> <td>opener</td> <td>返回對創建此窗口的窗口的引用。</td> </tr> <tr> <td>outerHeight</td> <td>返回窗口的外部高度，包含工具條與滾動條。</td> </tr> <tr> <td>outerWidth</td> <td>返回窗口的外部寬度，包含工具條與滾動條。</td> </tr> <tr> <td>pageXOffset</td> <td>設置或返回當前頁面相對於窗口顯示區左上角的 X 位置。</td> </tr> <tr> <td>pageYOffset</td> <td>設置或返回當前頁面相對於窗口顯示區左上角的 Y 位置。</td> </tr> <tr> <td>parent</td> <td>返回父窗口。</td> </tr> <tr> <td>screen</td> <td>對 Screen 對象的只讀引用。請參數 Screen 對象。</td> </tr> <tr> <td>screenLeft</td> <td>返回相對於屏幕窗口的x坐標</td> </tr> <tr> <td>screenTop</td> <td>返回相對於屏幕窗口的y坐標</td> </tr> <tr> <td>screenX</td> <td>返回相對於屏幕窗口的x坐標</td> </tr> <tr> <td>screenY</td> <td>返回相對於屏幕窗口的y坐標</td> </tr> <tr> <td>self</td> <td>返回對當前窗口的引用。等價於 Window 屬性。</td> </tr> <tr> <td>status</td> <td>設置窗口狀態欄的文本。</td> </tr> <tr> <td>top</td> <td>返回最頂層的父窗口。</td> </tr> </tbody> </table> <p></P><P style="text-align:center;"><img src="https://i1.wp.com/p3.pstatp.com/large/2ec5000136e81cfed857" img_width="1280" img_height="905" inline="0" alt="Window 對象" data-index="2"></P><P>Window 對象方法</P><P><br /> <table class="border"> <tbody> <tr class="firstRow"> <th>方法</th> <th>描述</th> </tr> <tr> <td>alert()</td> <td>顯示帶有一段消息和一個確認按鈕的警告框。</td> </tr> <tr> <td>blur()</td> <td>把鍵盤焦點從頂層窗口移開。</td> </tr> <tr> <td>clearInterval()</td> <td>取消由 setInterval() 設置的 timeout。</td> </tr> <tr> <td>clearTimeout()</td> <td>取消由 setTimeout() 方法設置的 timeout。</td> </tr> <tr> <td>close()</td> <td>關閉瀏覽器窗口。</td> </tr> <tr> <td>confirm()</td> <td>顯示帶有一段消息以及確認按鈕和取消按鈕的對話框。</td> </tr> <tr> <td>createPopup()</td> <td>創建一個 pop-up 窗口。</td> </tr> <tr> <td>focus()</td> <td>把鍵盤焦點給予一個窗口。</td> </tr> <tr> <td>moveBy()</td> <td>可相對窗口的當前坐標把它移動指定的像素。</td> </tr> <tr> <td>moveTo()</td> <td>把窗口的左上角移動到一個指定的坐標。</td> </tr> <tr> <td>open()</td> <td>打開一個新的瀏覽器窗口或查找一個已命名的窗口。</td> </tr> <tr> <td>print()</td> <td>列印當前窗口的內容。</td> </tr> <tr> <td>prompt()</td> <td>顯示可提示用戶輸入的對話框。</td> </tr> <tr> <td>resizeBy()</td> <td>按照指定的像素調整窗口的大小。</td> </tr> <tr> <td>resizeTo()</td> <td>把窗口的大小調整到指定的寬度和高度。</td> </tr> <tr> <td>scroll()</td> <td></td> </tr> <tr> <td>scrollBy()</td> <td>按照指定的像素值來滾動內容。</td> </tr> <tr> <td>scrollTo()</td> <td>把內容滾動到指定的坐標。</td> </tr> <tr> <td>setInterval()</td> <td>按照指定的周期（以毫秒計）來調用函數或計算表達式。</td> </tr> <tr> <td>setTimeout()</td> <td>在指定的毫秒數後調用函數或計算表達式。</td> </tr> </tbody> </table> <p></P><P style="text-align:center;"><img src="https://i1.wp.com/p3.pstatp.com/large/2ec20003d82147367c54" img_width="1280" img_height="851" inline="0" alt="Window 對象" data-index="3"></P> <p><center> <script src="/336-3.js"></script></center></p> <p></P> <p><center> <script 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