js打怪升级之路三 点出满天小星星

点出满天小星星 不懂多敲几遍即可

<html onclick="init(event)">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
//实例:点出满天星星
/*
	(1)当onclick事件发生时(点击html标记),去显示一个星星
*/
function init(e)
{
	//创建图片
	var imgObj = document.createElement("img");
	//追加到<body>节点下
	document.body.appendChild(imgObj);
	//增加src属性
	imgObj.src = "images/xingxing.gif";
	//增加width属性
	var width = getRandom(15,85);
	imgObj.width = width;
	//增加style属性
	var x = e.clientX ? e.clientX : event.clientX;
	var y = e.clientY ? e.clientY : event.clientY;
	imgObj.style.position = "absolute";
	imgObj.style.left = x - width/2 + "px";
	imgObj.style.top = y - width/2 + "px";
}
function getRandom(min,max)
{
	var random = Math.random()*(max-min)+min;
	random = Math.floor(random);
	return random;
}
</script>
</head>

<body bgColor="#000">
</body>
posted @ 2018-12-23 23:33  liulonglong  阅读(91)  评论(0编辑  收藏  举报