Vue.js实现拖放效果的实例
时间：2021-04-18 09:50:21|栏目：vue|点击： 次
页面效果如下所示：
代码请看这里,当当当当:
html:
<template>
<div class='drag-content'>
<div class='project-content'>
<div class='select-item' draggable='true' @dragstart='drag($event)' v-for='pjdt in projectdatas'>{{pjdt.name}}</div>
</div>
<div class='people-content'>
<div class='drag-div' v-for='(ppindex,ppdt) in peopledata' @drop='drop($event)' @dragover='allowDrop($event)'>
<div class='select-project-item'>
<label class='drag-people-label'>{{ppdt.name}}:</label>
</div>
</div>
</div>
</div>
</template>
<div class='select-item' draggable='true' @dragstart='drag($event)' v-for='pjdt in projectdatas'>{{pjdt.name}}</div>
在这行代码中小颖在绑定dragstart事件时,drag($event)写法和js写法不一样,如果你在vue中绑定事件时要传 'event',你不能像js那种格式去写 ,比如:@dragstart='drag(event)' 这个写的话你在drag方法中获取到的event是 undefined,因为它把 @dragstart='drag(event)' 中的event当成了一个变量,而该变量并没有在data中定义所以就是 undefined.早上小颖就碰到过此坑.所以切记格式是介个酱紫的: @dragstart='drag($event)'
js代码:
<script>
let dom = null
export default {
components: {
},
ready: function() {
},
methods: {
drag:function(event){
dom = event.currentTarget
},
drop:function(event){
event.preventDefault();
event.target.appendChild(dom);
},
allowDrop:function(event){
event.preventDefault();
},
},
data() {
return {
projectdatas:[{
id:1,
name:'葡萄',
},{
id:2,
name:'芒果',
},{
id:3,
name:'木瓜',
},{
id:4,
name:'榴莲',
}],
peopledata:[{
id:1,
name:'小颖',
},{
id:2,
name:'hover',
},{
id:3,
name:'空巢青年三 ',
},{
id:3,
name:'一丢丢',
}]
}
}
}
</script>
