HTML 拖放 API -

Question

This is a simple math game.这是一个简单的数学游戏。

My problem: I cannot drag the images in the middle and drag them to the left side.我的问题：我无法拖动中间的图像并将它们拖动到左侧。 I did some research on the internet but could not find any results.我在互联网上做了一些研究，但找不到任何结果。

HTML: HTML：

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="styleSheet.css" />
  <script src="myScript.js"></script>
</head>
<body>
  <!--İŞLEMLER-->
  <div id="islemler">
    <!--1.İŞLEM-->
    <div>
      <img src="images/question-mark.png" ondrop="dropHandler(event)" ondragover="dragoverHandler(event)">
      <img src="images/plus.png">
      <img src="images/question-mark.png" ondrop="dropHandler(event)" ondragover="dragoverHandler(event)">
      <img src="images/equal.png">
      <img src="images/eight.png">
    </div>


  </div>
  <!--TAŞINACAK RAKAMLAR-->
  <div id="tasinacakRakamlar">
    <img src="images/three.png" draggable="true" ondragstart="dragstartHandler(event)">
    <img src="images/five.png" draggable="true" ondragstart="dragstartHandler(event)">
  </div>
</body>
</html>

JS: JS：

function dragstartHandler(e){
    e.dataTransfer.setData("text",e.target.id);
}

function dragoverHandler(e){
    e.preventDefault();
    //e.dataTransfer.dropEffect="copy";
}

function dropHandler(e){
    e.preventDefault();
    var myData = e.dataTransfer.getData("text");
    e.target.appendChild(document.getElementById(myData));
}

Answer 1

Well, your trying to getElementByID but your elements dosent have ID.好吧，您尝试 getElementByID 但您的元素没有 ID。 put ID on your elements.将 ID 放在您的元素上。

 function dragstartHandler(e){ e.dataTransfer.setData("text",e.target.id); } function dragoverHandler(e){ e.preventDefault(); //e.dataTransfer.dropEffect="copy"; } function dropHandler(e){ e.preventDefault(); var myData = e.dataTransfer.getData("text"); e.target.appendChild(document.getElementById(myData)); }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" href="styleSheet.css" /> <script src="myScript.js"></script> </head> <body> <!--İŞLEMLER--> <div id="islemler"> <!--1.İŞLEM--> <div> <img src="images/question-mark.png" ondrop="dropHandler(event)" ondragover="dragoverHandler(event)"> <img src="images/plus.png"> <img src="images/question-mark.png" ondrop="dropHandler(event)" ondragover="dragoverHandler(event)"> <img src="images/equal.png"> <img src="images/eight.png"> </div> </div> <!--TAŞINACAK RAKAMLAR--> <div id="tasinacakRakamlar"> <img src="images/three.png" draggable="true" id="ele1" ondragstart="dragstartHandler(event)"> <img src="images/five.png" draggable="true" id="ele2" ondragstart="dragstartHandler(event)"> </div> </body> </html>

HTML 拖放 API -

问题描述

1 个解决方案

解决方案1
0 2018-11-04 18:51:51

HTML 拖放 API -

问题描述

1 个解决方案

解决方案1 0 2018-11-04 18:51:51

解决方案1
0 2018-11-04 18:51:51