[html]代码库
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 200px;
            height: 200px;
            position: absolute;
        }
    </style>
</head>
<body>
    <script>
        document.documentElement.onmousemove = function (eve) {
            var ev = window.eve || eve
            var div = document.createElement("div")
            console.log(div)
            div.style.left = ev.clientX + "Px"
            div.style.top = ev.clientY + "Px"
            var r = Math.floor(Math.random() * (255 - 0 + 1) + 0)
            var g = Math.floor(Math.random() * (255 - 0 + 1) + 0)
            var b = Math.floor(Math.random() * (255 - 0 + 1) + 0)
            div.style.backgroundColor = "rgb(" + r + "," + g + "," + b + ")"
            document.body.appendChild(div)
        }
    </script>
</body>