<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="js/echarts.5.4.3.js"></script>
</head>
<body>
<div id="main" draggable="true" style="width: 400px;height:300px;border:1px solid #f00;"></div>
<div id="box" style="margin:30px;border:2px solid #000;height:800px;position:relative">
</div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
var option = {
title: {
text: 'ECharts 入门示例'
},
tooltip: {},
legend: {
data: ['销量']
},
xAxis: {
data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
},
yAxis: {},
series: [{
name: '销量',
type: 'bar',
data: [5, 20, 36, 10, 10, 20]
}]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
<script>
var picEle = document.getElementById("main");
var boxEle = document.getElementById("box"),
position = {};
picEle.ondragstart = function(e) {
console.log("ondragstart")
let target = e || window.event;
target.dataTransfer.setData('text', target.target.id)
console.log(target)
}
boxEle.ondragover = function(e) {
let target = e || window.event;
console.log(target)
target.preventDefault();
position.offsetX = target.offsetX
position.offsetY = target.offsetY
}
boxEle.ondrop = function(e) {
let target = e || window.event;
let data = target.dataTransfer.getData('text');
document.querySelector("#" + data).style.position = 'absolute'
document.querySelector("#" + data).style.left = position.offsetX + 'px'
document.querySelector("#" + data).style.top = position.offsetY + 'px'
e.target.appendChild(document.querySelector("#" + data));
}
</script>
</body>
</html>