<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script> window.onload = function () { var oDiv = document.getElementById('one'); var x = 100; var y = 100; document.onkeydown = function (event) { var e = window.event || event; var code = e.keyCode; switch (code) { case 37: x--; break; case 38: y--; break; case 39: x++; break; case 40: y++; break; } oDiv.style.left = x + 'px'; oDiv.style.top = y + 'px'; } } </script> <style> #one { width: 200px; height: 200px; background: red; position: absolute; left: 100px; top: 100px; text-align: center; line-height: 200px; font-size: 18px; } </style> </head> <body> <div id="one">大吉大利 今晚吃鸡</div> </body> </html>
拖拽箱子
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script>
window.onload = function () {
//获取div
var oDiv = document.getElementById('one');
//定义一个移动开关，默认是关闭的，只有当鼠标按下时，才开启
var flag = false;
//定义鼠标位置和div位置默认值
var mousex = 0;
var mousey = 0;
var divx = 100;
var divy = 100;
//给div添加鼠标按下事件
oDiv.onmousedown = function(ev){
var e = window.event || ev;
//移动开关开启
flag = true;
//获取div的位置，鼠标的位置
divx = oDiv.offsetLeft;//获取div的x坐标
divy = oDiv.offsetTop;//获取div的y坐标
mousex = e.clientX;
mousey = e.clientY;
oDiv.style.cursor = 'move'; //给div添加一个鼠标样式
}
oDiv.onmousemove = function(ev){
var e = window.event || ev;
//判断移动开关
if(flag){
//重新设置div的位置
//oDiv.style.left = e.clentx - (mousex-divx)+'px';
oDiv.style.left = e.clientX - mousex+divx+'px';
oDiv.style.top = e.clientY - mousey+divy+'px';
}
}
//给 document,添加一个鼠标弹起事件，div移动关闭。
document.onmouseup = function(){
flag = false;
}
}
</script>
<style>
#one {
200px;
height: 200px;
background: red;
position: absolute;
left: 100px;
top: 100px;
text-align: center;
line-height: 200px;
font-size: 18px;
}
</style>
</head>
<body>
<div id="one">大吉大利 今晚吃鸡</div>
</body>
</html>
箱子