html表單和表單元素

2、topframename規(guī)定在何處打開actionURL。2表單元素2.1元素：用于指定輸入項元素，必須放在form元素中。2.1.1name屬性：用于設(shè)置輸入項的參數(shù)名。2.1.2value屬性：用于設(shè)置輸入項的參數(shù)值。1.1.1readonly屬性：用于設(shè)置輸入項為只讀，用戶不可輸入。1.1.2type屬性：用于設(shè)置輸入項的類型：1.1.2.1type=”text”：文本輸入框1.1.2.2type=”password”：密碼輸入框，輸入內(nèi)容會自動轉(zhuǎn)成圓點或者星號。用于保護用戶輸入的密碼。1.1.2.3type=”r

3、adio”：單選輸入按鈕，name屬性相同的一組單選輸入按鈕，遵守互斥原則，只能選中其中一項?？梢允褂胏hecked屬性設(shè)置其為被選中狀態(tài)。1.1.2.4type=”checkbox”：復(fù)選輸入按鈕，name屬性相同的一組復(fù)選輸入按鈕，允許同時勾選多個；勾選多個時，會將每個被選中的項的值均提交到服務(wù)器?？梢允褂胏hecked屬性設(shè)置其為被選中狀態(tài)。1.1.2.5type=”file”：文件上傳控件，用于指定本地文件上傳到服務(wù)器。1.1.2.6type=”hidden”：隱藏輸入項，不會在頁面顯示，但是會隨著表單的提交而提交到服務(wù)器的數(shù)

4、據(jù)。1.1.2.7type=”submit”：提交按鈕，自動綁定了表單的提交時間，用于定義點擊時提交表單的按鈕。1.1.2.8type=”reset”：重置按鈕，用于定義點擊時清空表單中已經(jīng)填寫的內(nèi)容的按鈕。1.1.2.9type=”button”：普通按鈕，用于定義按鈕，通常需要綁定事件處理函數(shù)。1.1元素：用于聲明下拉列表元素。1.1.1name屬性：用于設(shè)置輸入項的參數(shù)名。1.1.2multiple屬性：用于設(shè)置下拉列表允許多選。1.1.3size屬性：用于設(shè)置下拉列表一次可以顯示的選項個數(shù)，默認(rèn)為1。1.2

5、ption>元素：用于定義下拉列表中的選項元素，必須放在select元素中。1.2.1value屬性：用于指定該下拉選項的值。1.2.2selected屬性：用于指定該下拉選項為被選中狀態(tài)。1.3元素：用于定義一個文本域，可以輸入多行文字。1.3.1rows屬性：定義文本域顯示的行數(shù)。1.3.2cols屬性：定義文本域顯示的列數(shù)。3.作業(yè)：根據(jù)下列效果圖，編寫HTML代碼，實現(xiàn)登錄頁面和注冊頁面。</p> </div> <div id="oi7z5j3" class="mt-3 bg-white"> <div id="umnfdex" class="d-lg-block d-none px-3 px-lg-4 py-3 border-bottom text-center font-18"> 當(dāng)前文檔最多預(yù)覽五頁，下載文檔查看全文 </div> <div id="grged7n" class="detail-fixed-feature d-none d-lg-block" id="detailFixedFeatureBox"> <div id="pq5j3xp" class="px-3 px-lg-4 py-3 d-flex align-items-center justify-content-between fixed-feature-box" id="detailFixedFeature"> <div id="pp7luww" class="d-lg-flex d-none align-items-center"> <div> <a class="btn btn-outline-danger article-state" href="javascript:;" data-id="46391841" data-code="438274" data-title="html表單和表單元素"> <span>侵權(quán)申訴</span> </a> <button type="button" class="btn btn-outline-secondary with-light ml-2" data-toggle="modal" data-target="#reportModal" 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