javascript - 如何使用嵌套在 HTML 中的 $( document ).ready() 调用函数

Question

好的，我有这个功能可以让我拖放。我让它在一个页面上工作，但我也希望在其他页面上也有这个功能。因此，我调整了该函数以获取参数(我想要拖动的元素的 ID 和放置目标)并用作参数，这样我就不必为每个页面编写单独的函数。我无法让它工作。我对 javascript、jquery mobile 和 html 相当陌生。这合法吗？如果是这样我该怎么办？

 <div data-role="page" id="proteinDrag" data-add-back-btn="true" data-dialog="true">
        <div data-role="header" style="background:#0493e5">
            <h1 style="color:white;">Protein</h1>
        </div>
        <p>Drag the food that is a good source of protein to the plate</p>
        <div id="droppable" class="ui-widget-header"><img src="....png"></div>
        <br style="clear:both">
        <div id="yesDrag" class="draggable ui-widget-content" style="text-align:middle;"><img src="....png"></div>
        <div id="noDrag" class="draggable ui-widget-content" style="text-align:left;"><img src="....png"></div>
        <script>
            dragging("#yesDrag","#noDrag","#droppable");
        </script>
  </div>
    //tried placing the script at end of the body and head     
  <script type ="text/javascript">
     var paraC;
     var paraW;
     var correct;
     var wrong;

     function dragging(idDrag, idNoDrag, idDrop){
         paraC = document.createElement("p");
         paraW = document.createElement("p");
         correct = document.createTextNode("Good Choice!");
         wrong = document.createTextNode("Not Quite!");
         $(function() {
           $( idDrag ).draggable({
                                    drag: function(event, ui){
                                      paraC.appendChild(correct);
                                      idDrag.appendChild(paraC);
                                      idDrop.appendChild(idDrag);
                                    }
                                 });
           $( idNoDrag ).draggable({
                                    helper:"clone",
                                    revert: true,
                                    drag: function(event, ui){
                                      paraW.appendChild(wrong);
                                      idNoDrag.appendChild(paraW);
                                    }
                                   });

           });
     }
 </script>

Answer 1

在声明函数之前不要调用它;)

我认为这就是为什么你什么也得不到的原因......

<div data-role="page" id="proteinDrag" data-add-back-btn="true" data-dialog="true">
  <div data-role="header" style="background:#0493e5">
    <h1 style="color:white;">Protein</h1>
  </div>
  <p>Drag the food that is a good source of protein to the plate</p>
  <div id="droppable" class="ui-widget-header"><img src="....png"></div>
  <br style="clear:both">
  <div id="yesDrag" class="draggable ui-widget-content" style="text-align:middle;"><img src="....png"></div>
  <div id="noDrag" class="draggable ui-widget-content" style="text-align:left;"><img src="....png"></div>
</div>
//tried placing the script at end of the body and head     
<script type ="text/javascript">
var paraC;
var paraW;
var correct;
var wrong;

function dragging(idDrag, idNoDrag, idDrop){
 paraC = document.createElement("p");
 paraW = document.createElement("p");
 correct = document.createTextNode("Good Choice!");
 wrong = document.createTextNode("Not Quite!");
 $(function() {
   $( idDrag ).draggable({
    drag: function(event, ui){
      paraC.appendChild(correct);
      idDrag.appendChild(paraC);
      idDrop.appendChild(idDrag);
    }
  });
   $( idNoDrag ).draggable({
    helper:"clone",
    revert: true,
    drag: function(event, ui){
      paraW.appendChild(wrong);
      idNoDrag.appendChild(paraW);
    }
  });

 });
}
// lunch function
  dragging("#yesDrag","#noDrag","#droppable");
</script>