图形碰撞
2017-04-20 本文已影响0人
洛洛kkkkkk
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>检测圆形碰撞</title>
<style type="text/css">
div{
border-radius: 50%;
}
.redDiv{
width: 200px;
height: 200px;
background-color: red;
}
.blue{
width: 100px;
height: 100px;
background-color: blue;
position: absolute;
}
</style>
</head>
<body>
<div class="redDiv"></div>
<div class="blue"></div>
</body>
<script type="text/javascript">
//让蓝色Div可以拖拽移动
var redDiv=document.querySelector(".redDiv");
var blueDiv=document.querySelector(".blue");
blueDiv.onmousedown= function (ev) {
var x=ev.offsetX;
var y=ev.offsetY;
document.onmousemove= function (ev) {
blueDiv.style.left=ev.clientX-x+"px";
blueDiv.style.top=ev.clientY-y+"px";
}
}
blueDiv.onmouseup =function () {
document.onmousemove =null;
}
</script>
</html>
