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復制代碼 代碼如下:
<script type="text/Javascript">
var ball;
var mouseX = 100;
var mouseY = 100;
var angle = 0;
var radius = 50;
function run(){
if(ball === undefined){
ball = document.createElement("span");
ball.style.position = "absolute";
ball.style.color = "#FF0000";
ball.style.zIndex = 999999999;
ball.innerHTML = "●";
document.body.appendChild(ball);
}
ball.style["left"] = mouseX+(Math.cos(angle)*radius) + "px";
ball.style["top"] = mouseY+(Math.sin(angle)*radius) + "px";
angle+=0.1;
}
function MousePos(e)
{
e = e || window.event;
var x,y;
if(!document.all){
x = e.pageX;
y = e.pageY;
}
else{
x = event.clientX + document.documentElement.scrollLeft;
y = event.clientY + document.documentElement.scrollTop;
}
return {x:x,y:y};
}
function setXY(e)
{
e = e || window.event;
var pos = MousePos(e);
mouseX = pos.x;
mouseY = pos.y;
}
window.onload = function(){
setInterval(run,20);
document.documentElement.onmousemove = function(e){
e = e || window.event;
setXY(e);
};
}
</script>
作者: cnblogs airy
JavaScript技術(shù)：javascript動畫之圓形運動,環(huán)繞鼠標運動作小球，轉(zhuǎn)載需保留來源！
鄭重聲明：本文版權(quán)歸原作者所有，轉(zhuǎn)載文章僅為傳播更多信息之目的，如作者信息標記有誤，請第一時間聯(lián)系我們修改或刪除，多謝。
