分享一个用原生JS实现的拖拽鼠标绘画的小Demo，效果如下：
以下是代码实现，欢迎大家复制粘贴。
代码语言：javascript复制<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>原生JS实现拖拽鼠标绘画</title>
<style>
div {
width: 10px;
height: 10px;
border-radius: 5px;
background: red;
position: absolute;
}
</style>
<script>
window.onload = function () {
var aDiv = document.getElementsByTagName('div');
var i = 0;
document.onmousemove = function (ev) {
var oEvent = ev || event;
// 让DIV跟着鼠标轨迹运动
for (i = aDiv.length - 1; i > 0; i--) {
aDiv[i].style.left = aDiv[i - 1].style.left;
aDiv[i].style.top = aDiv[i - 1].style.top;
};
aDiv[0].style.left = oEvent.clientX 'px';
aDiv[0].style.top = oEvent.clientY 'px';
};
};
</script>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
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</body>
</html>
