在 input type="submit" 按鈕中添加事件

如下代碼，可以直接在<input type="submit" ..>中添加onclick事件。用戶點擊"submit"按鈕後會觸發兩個操作：一是提交表單到後臺服務器。二是觸發onClick事件調用我自己定義的upLoadData()函數。

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<form action="http://127.0.0.1:5000" method="post" >
                  <div class="form-group label-floating" style="padding:0px;">
                    <label for="desc" class="control-label">Describe the image in as much detail as possible...</label>
                    <textarea id="desc" name="desc" class = "textarea_personal" rows="17" cols="50"></textarea>
                  </div>
                  <input type="submit" value="提交" name="submit" onclick="upLoadData()">
                </form>

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