How to use Vue to implement drag and drop function

 位置 
x:{{val.x}} 
y:{{val.y}} 
 //注意这里要通过指令绑定函数将当前元素的位置数据传出来 
 

Vue.directive('drag',//自定义指令 {bind:function (el, binding) { let op = el; //当前元素 let self = this; //上下文 op.onmousedown = function (e) { //鼠标按下，计算当前元素距离可视区的距离 let disX = e.clientX - op.offsetLeft; let disY = e.clientY - op.offsetTop; document.onmousemove = function (e) { //通过事件委托，计算移动的距离 let l = e.clientX - disX; let t = e.clientY - disY; //移动当前元素 op.style.left = l + 'px'; op.style.top = t + 'px'; //将此时的位置传出去 binding.value({x:e.pageX,y:e.pageY}) }; document.onmouseup = function (e) { document.onmousemove = null; document.onmouseup = null; }; }; } } ); window.onload = function () { let vm = new Vue({ el: '#box', data: { val: '123', style: { width: '100px', height: '100px', background: 'aqua', position: 'absolute', right: '30px', top: 0 } }, methods:{ //接受传来的位置数据，并将数据绑定给data下的val greet(val){ vm.val = val; } } , }); }