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学做全屏浮动广告 JS 原生代码

2017-03-22 19:58 477 查看

<!DOCTYPE HTML>
<html><head><title>JS全屏漂浮广告</title>
<meta http-equiv=Content-Type content="text/html; charset=gbk">
<style type=text/css>
div#roll {
width: 100px; color: #fff; position: absolute; height: 100px; background-color: #000
}
</style>
<body>
<H2>JS全屏漂浮广告，移入光标停止移动</H2>
<div id="roll">我是广告</div>
<script type=text/javascript>
var ggRoll = {
roll: document.getElementById("roll"),
speed: 20,
statusX: 1,
statusY: 1,
x: 100,
y: 300,
winW: document.documentElement.clientWidth - document.getElementById("roll").offsetWidth,
winH: document.documentElement.clientHeight - document.getElementById("roll").offsetHeight,
Go: function () {
this.roll.style.left = this.x + 'px';
this.roll.style.top = this.y + 'px';

this.x = this.x + (this.statusX ? -1 : 1)
if (this.x < 0) { this.statusX = 0 }
if (this.x > this.winW) { this.statusX = 1 }

this.y = this.y + (this.statusY ? -1 : 1)
if (this.y < 0) { this.statusY = 0 }
if (this.y > this.winH) { this.statusY = 1 }

}
};
var interval = setInterval("ggRoll.Go()", ggRoll.speed);
ggRoll.roll.onmouseover = function () { clearInterval(interval) };
ggRoll.roll.onmouseout = function () { interval = setInterval("ggRoll.Go()", ggRoll.speed) };

</script>
</body></html>

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