Javascript 从拖动的元素中获取相关数据元素-拖放函数
我试图在JavaScript中检索被拖动对象的父数据属性Javascript 从拖动的元素中获取相关数据元素-拖放函数,javascript,drag-and-drop,element,custom-data-attribute,Javascript,Drag And Drop,Element,Custom Data Attribute,我试图在JavaScript中检索被拖动对象的父数据属性data date。 因此,我希望接收数据日期属性,从中拖动div“drag me” HTML示例: <td data-date="2/3/2020"> <div>drag me</div> </td> <td data-date="3/3/2020"> <-- DIV "Drag Me" will be drag
data date
。
因此,我希望接收数据日期属性
,从中拖动div
“drag me”
HTML示例:
<td data-date="2/3/2020">
<div>drag me</div>
</td>
<td data-date="3/3/2020">
<-- DIV "Drag Me" will be dragged to this location --!>
</td>
$(".drag").draggable({
cursor: "crosshair",
revert: "invalid",
start: function(event, ui) {
var oldDate = $(this).parent().data('date'); // get value from parent data-date attribute
$(this).data('oldDate', oldDate); // pass variable to droppable function
}
});
$("td[data-date]").droppable({
accept: ".drag",
activeClass: "over",
drop: function(event, ui) {
var displayOldDate = ui.draggable.data('oldDate'); // access the variable saved in draggable function
console.log('Dragged from: ' + displayOldDate);
}
});
管理它的方法很少
我找到了一种方法,可以将信息从可拖动功能传递到可拖放功能 在下面的示例中,我首先从draggable函数中的父元素获取数据日期值。 检索此数据后,我们将值从draggable传递到droptable函数 我们将de variable命名为oldDate,因此可以通过调用“ui.draggable.data('oldDate')”在可拖放函数中访问它。下面我将为你们提供一个示例代码 可拖动功能:
<td data-date="2/3/2020">
<div>drag me</div>
</td>
<td data-date="3/3/2020">
<-- DIV "Drag Me" will be dragged to this location --!>
</td>
$(".drag").draggable({
cursor: "crosshair",
revert: "invalid",
start: function(event, ui) {
var oldDate = $(this).parent().data('date'); // get value from parent data-date attribute
$(this).data('oldDate', oldDate); // pass variable to droppable function
}
});
$("td[data-date]").droppable({
accept: ".drag",
activeClass: "over",
drop: function(event, ui) {
var displayOldDate = ui.draggable.data('oldDate'); // access the variable saved in draggable function
console.log('Dragged from: ' + displayOldDate);
}
});
可下拉功能:
<td data-date="2/3/2020">
<div>drag me</div>
</td>
<td data-date="3/3/2020">
<-- DIV "Drag Me" will be dragged to this location --!>
</td>
$(".drag").draggable({
cursor: "crosshair",
revert: "invalid",
start: function(event, ui) {
var oldDate = $(this).parent().data('date'); // get value from parent data-date attribute
$(this).data('oldDate', oldDate); // pass variable to droppable function
}
});
$("td[data-date]").droppable({
accept: ".drag",
activeClass: "over",
drop: function(event, ui) {
var displayOldDate = ui.draggable.data('oldDate'); // access the variable saved in draggable function
console.log('Dragged from: ' + displayOldDate);
}
});