[英]How to get the new y-value within gridstack.js
我正在將Gridstack用於可拖動的div。 如何獲得data-gs-y的新值(因此div降到了y軸)。 其實我嘗試了這個:
<div class="row">
<div class="col-12">
<div class="card">
<div class="card-body">
<div class="grid-stack" data-gs-width="12" data-gs-animate="yes">
<div class="grid-stack-item" data-gs-x="0" data-gs-y="0" data-gs-width="12" data-gs-height="1" data-gs-id="facebook">
<div class="grid-stack-item-content">facebook</div>
</div>
<div class="grid-stack-item" data-gs-x="0" data-gs-y="1" data-gs-width="12" data-gs-height="1" data-gs-id="workbook">
<div class="grid-stack-item-content">workbook</div>
</div>
<div class="grid-stack-item" data-gs-x="0" data-gs-y="2" data-gs-width="12" data-gs-height="1" data-gs-id="pictures">
<div class="grid-stack-item-content">pictures</div>
</div>
</div>
</div>
</div>
</div>
</div>
<script type="text/javascript">
$(function () {
$('.grid-stack').gridstack({
disableResize: true,
removable: true
});
});
$('.grid-stack').on('dragstop', function(event, ui) {
var element = event.target;
var id = $(element).attr('data-gs-id');
var y = $(element).attr('data-gs-y');
alert(id + y);
});
$('.grid-stack').on('dropped', function (event, previousWidget, newWidget) {
alert('dropped'); // It's not thrown
});
$('.grid-stack').on('change', function(event, items) {
var element = items[0].el[0];
var id = $(element).attr('data-gs-id');
var y = $(element).attr('data-gs-y');
alert(id + y);
});
</script>
因此,事件的阻力和變化也給了我y軸的當前/舊值,並且不會拋出drop事件。
如何獲得y軸的新值?
我認為您可以使用“突變觀察器”來監聽每個div元素對屬性“ data-gs-y”的更改。 我編寫了以下代碼並在此演示中進行了驗證http://gridstackjs.com/demo/knockout.html
var divs = document.querySelectorAll(".grid-stack-item");
var dragging = false;
divs.forEach(function(div){
const observer = new MutationObserver((mutations) => {
mutations.forEach((mutation) => {
if(!dragging){
alert("new y-value " + div.getAttribute("data-gs-y"));
}
});
});
observer.observe(div, { attributes: true, attributeFilter: ['data-gs-y'] });
div.onmousedown = function(){ dragging = true;}
div.onmouseup = function(){ dragging = false;}
});
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