我有一个可拖动的窗口，我想使该窗口必须是独立的并且可以拖动的文档，并且在放置时将元素复制到拖动的位置并使其也留在窗口中。基本上，当您应该将文档拖出窗口到屏幕上的任何位置时，当您停止拖动时，文档将被复制，您在窗口上有一个文档，在屏幕上有一个文档。屏幕上的那个不能复制，但可以拖动。我该怎么做？
dragElement(document.getElementById("documento"));
dragElement(document.getElementById("docwindow"));
function dragElement(elmnt) {
var pos1 = 0,
pos2 = 0,
pos3 = 0,
pos4 = 0;
if (document.getElementById(elmnt.id + "header")) {
// if present, the header is where you move the DIV from:
document.getElementById(elmnt.id + "header").onmousedown = dragMouseDown;
} else {
// otherwise, move the DIV from anywhere inside the DIV:
elmnt.onmousedown = dragMouseDown;
}
function dragMouseDown(e) {
e = e || window.event;
e.preventDefault();
// get the mouse cursor position at startup:
pos3 = e.clientX;
pos4 = e.clientY;
document.onmouseup = closeDragElement;
// call a function whenever the cursor moves:
document.onmousemove = elementDrag;
}
function elementDrag(e) {
e = e || window.event;
e.preventDefault();
// calculate the new cursor position:
pos1 = pos3 - e.clientX;
pos2 = pos4 - e.clientY;
pos3 = e.clientX;
pos4 = e.clientY;
// set the element's new position:
elmnt.style.top = (elmnt.offsetTop - pos2) + "px";
elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";
}
function closeDragElement() {
// stop moving when mouse button is released:
document.onmouseup = null;
document.onmousemove = null;
}
}#janela,
#docwindow,
#BlueWindow {
position: absolute;
width: 40%;
height: 38%;
left: 100px;
}
#docwindowheader,
#BlueWindowheader {
height: 7%;
background: rgb(30, 87, 153);
/* Old browsers */
background: -moz-linear-gradient(top, rgba(30, 87, 153, 1) 0%, rgba(41, 137, 216, 1) 50%, rgba(32, 124, 202, 1) 51%, rgba(125, 185, 232, 1) 100%);
/* FF3.6-15 */
background: -webkit-linear-gradient(top, rgba(30, 87, 153, 1) 0%, rgba(41, 137, 216, 1) 50%, rgba(32, 124, 202, 1) 51%, rgba(125, 185, 232, 1) 100%);
/* Chrome10-25,Safari5.1-6 */
background: linear-gradient(to bottom, rgba(30, 87, 153, 1) 0%, rgba(41, 137, 216, 1) 50%, rgba(32, 124, 202, 1) 51%, rgba(125, 185, 232, 1) 100%);
/* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
filter: progid: DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8', GradientType=0);
/* IE6-9 */
}
#closeDocs,
#closeBlue {
width: 15px;
height: 15px;
position: absolute;
border-radius: 100%;
top: 4.2%;
right: 1%;
z-index: 2;
}
#docsHeadTexto,
#JoanaPTexto {
color: black;
text-align: center;
text-shadow: 3px 2px grey;
font-size: 95%;
top: 25%;
}
#DocImg {
width: 20%;
height: 20%;
background-color: none;
padding: 5px;
}
img#DocImg {}
#bottomWindowDocs {
background-color:pink;
height: 80%;
border-bottom-left-radius: 5%;
border-bottom-right-radius: 5%;
}
#DocEx {
position: absolute;
top: 33%;
left: 4%;
font-size: 10px;
}
#DocEx {
z-index: 6;
}<div class="janelas" id="docwindow">
<div id="docwindowheader">
<header class="windowTop">
<h1 id="docsHeadTexto">Documents</h1>
<img id="closeDocs" class="X" src="http://icons.iconarchive.com/icons/oxygen-icons.org/oxygen/256/Actions-dialog-close-icon.png" alt="X" onclick="closeMain()">
</header>
</div>
<div id="bottomWindowDocs">
<div class="documents">
<div id="documento">
<img id="DocImg" src="https://img.icons8.com/pastel-glyph/2x/file.png" alt="doc">
<h1 id="DocEx">Doc-example</h1>
</div>
</div>
<!----<div id="DocExemplo" S>
<header class="windowhead">
Documento exemplo
<img class="X" src="https://banner2.kisspng.com/20180402/dwe/kisspng-computer-icons-social-media-email-webmail-cancel-button-5ac240963875f3.0504665115226799582313.jpg" alt="X" onclick="closeMain()">
<button id="share">share</button>
<button id="back">back</button>
</header>
<div id="corpo">
<h4>Este é um exemplo de Documento</h4>
</div>
</div>-->
</div>
</div>只是为了说明使用jQuery 的 draggable()的基本功能，请在 jsFiddle 上查看此演示。
这是您需要允许拖动一个带有子元素的 JS 元素，这些子元素可以单独拖放：
$('#doc-container').droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
cursor: 'move',
greedy: true,
drop: function(event, ui) {
console.log(ui);
$(ui.draggable).removeClass("out-of-box").addClass("in-box");
ui.draggable.detach().appendTo($(this));
}
});
$('#larger-drop-target').droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
cursor: 'move',
drop: function(event, ui) {
$(ui.draggable).removeClass("in-box").addClass("out-of-box");
ui.draggable.detach().appendTo($(this));
}
});
$("#doc-container, .draggable").draggable({});
我的示例使用以下 HTML 布局：
<div id="larger-drop-target">
<div id="doc-container" class="ui-widget-header droppable">
<header class="windowTop">
<h1 id="docsHeadTexto">Documents</h1>
</header>
<div id="draggable" style="left:0;" class="draggable ui-widget-content">
Doc Example
</div>
</div>
</div>
和 CSS 代码：
#larger-drop-target {
width: 100%;
height: 100%;
}
.draggable {
width: 80px;
height: 80px;
padding: 5px;
position: absolute;
}
#doc-container {
height: 200px;
}
.in-box {
background: #FEE;
}
.out-of-box {
background: #EFE;
}
一些解释词：
droppable()定义那些可以接受要拖动到的元素的元素。在示例中，我无法使用 HTML“body”元素，因为这在小提琴中不起作用，因此我决定将其包装#doc-container在更大的容器中#larger-drop-target。在.detach()和.attachTo()确保元素的父被删除，分配到当前放置目标，否则子元素仍然会与他们的父母移动，即使他们被丢弃在它之外。draggable() 定义那些可以拖动的元素。#doc-container显示为红色，放在外面的元素显示为绿色。position: absolute否则元件将不断地左右移动，每当一个元件被移动为拖动元件是必要的。如果您的容器中需要多个“文件”，请为每个文件指定合适的left: X00px;样式更新 1：
您可以在离开父容器后立即克隆每个元素，并在拖回时使用类检查和.clone()/将其删除.remove()：
$('#doc-container').droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
cursor: 'move',
greedy: true,
drop: function(event, ui) {
if (ui.draggable.hasClass('out-of-box')) {
ui.draggable.remove();
} else {
$(ui.draggable).removeClass("out-of-box").addClass("in-box");
ui.draggable.detach().appendTo($(this));
}
}
});
$('#larger-drop-target').droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
cursor: 'move',
drop: function(event, ui) {
if (ui.draggable.hasClass("in-box")) {
var clone = ui.draggable.clone();
clone.removeClass("in-box").addClass("out-of-box");
clone.detach().appendTo($(this)).draggable({});
ui.draggable.draggable({
revert: true
});
}
}
});
这是一个显示更改版本的小提琴。
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