JS 绘制心形线

<!DOCTYPE HTML>

<html>

<head>

<meta charset="utf-8">

<title>JS心型线</title>

<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Tangerine">

<style>

div{

position:absolute;

}

.xx-box{

left:50%;

top:0;

margin-left:-250px;

width:500px;

height:500px;

}

.xx-box .text{

top:30%;

height:48px;

line-height:48px;

color:#f00;

text-shadow: 3px 3px 4px #f00;

font-size:36px;

font-weight:bold;

width:100%;

text-align:center;

font-family:Tangerine,Tahoma,Arial,"\65f6\5c1a\4e2d\9ed1\7b80\4f53","\5b8b\4f53";

}

.xx-box .item{

width:20px;

height:20px;

overflow:hidden;

}

</style>

</head>

<body>

<div class="xx-box" id="xx-box">

<div class="text">I Love You</div>

</div>

<script>

function createPoint(x,y,c){

var div = document.createElement("div");

div.className = "item";

div.style.left = x + "px";

div.style.top = y + "px";

div.style.backgroundColor = c;

document.getElementById("xx-box").appendChild(div);

}

function heartShape(r,dx,dy,c){//r:大小;dx:水平偏移;dy:垂直偏移;c:颜色

var m,n,x,y,i;

for(i = 0; i <= 200; i += 1){

m = i;

n = -r * (((Math.sin(i) * Math.sqrt(Math.abs(Math.cos(i)))) / (Math.sin(i) + 1.4)) - 2 * Math.sin(i) + 2);

x = n * Math.cos(m) + dx;

y = n * Math.sin(m) + dy;

createPoint(x,y,c);

}

}

heartShape(120,250,100,"#f00");

</script>

</body>

</html>
巴特西

JS 绘制心形线

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