运行效果截图如下：
具体代码如下：
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>JS心型线</title> <style> div{ position:absolute; } .xx-box{ left:50%; top:50%; margin-left:-250px; margin-top:-250px; width:500px; height:500px; background-color:#000; } .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:2px; height:20px; overflow:hidden; } </style> </head> <body> <div> <div>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 += 0.04){ 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(80,250,100,"#f00"); </script> </body> </html>
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