我在javascript(拖放)中遇到问题.
// I drag: <div id = "name">Name</div>
<div class="color">white</div>
<div class="color">black</div>
<div class="color">pink</div>
//And drop here:
<div class="color">yellow</div>
<div class="color">green</div>
<div class="color">red</div>
//result:
<div class="color">white</div>
<div class="color">black</div>
<div class="color">pink</div>
<div id="name">
<div class="color">yellow</div>
<div class="color">green</div>
<div class="color">red</div>
</div>
//continue drag:<div id = "name">Name</div> other and drop above: <div class="color">green</div>
<div class="color">white</div>
<div class="color">black</div>
<div class="color">pink</div>
<div id="name">
<div class="color">yellow</div>
</div>
<div id ="name">
<div class="color">green</div>
<div class="color">red</div>
</div>如何使用javascript拖放.只有javascript.请帮我提问或示例代码!谢谢你们!
我用这种方式编码,例如:
function addDrag(obj,kind){
addEvent(obj, 'dragstart', function (e) {
dragSrcEl = obj;
e.dataTransfer.setData('text/html', obj.innerHTML);
});
addEvent(obj, 'dragover', function (e) {
if (e.preventDefault) e.preventDefault(); // allows us to drop
$(obj).addClass('dragover');
e.dataTransfer.dropEffect = 'copy';
return false;
});
..........
问题是,当我拉"名称"并删除任何位置时,"名称"下面的"="颜色是"名称"的儿子..."名称"是父母.如何以这种方式编码!请帮我!
<!DOCTYPE HTML>
<html>
<head>
<style>
#div1 {width:350px;height:70px;padding:10px;border:1px solid #aaaaaa;}
</style>
<script>
function allowDrop(ev) {
ev.preventDefault();
}
function drag(ev) {
ev.dataTransfer.setData("text", ev.target.id);
}
function drop(ev) {
ev.preventDefault();
var data = ev.dataTransfer.getData("text");
ev.target.appendChild(document.getElementById(data));
}
</script>
</head>
<body>
<p>Drag the W3Schools image into the rectangle:</p>
<div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<br>
<img id="drag1" src="img_logo.gif" draggable="true" ondragstart="drag(event)" width="336" height="69">
</body>
</html>
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