本文实例讲述了jQuery实现的指纹扫描效果。分享给大家供大家参考，具体如下：
运行效果截图如下：
点击此处查看在线演示效果。
具体代码如下：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>demo</title> <style type="text/css"> body { background:black; } .dialog { width:300px; height:300px; position:fixed; left:50%; margin-left:-150px; border:2px dashed green; top:50px; } .dialog .shape { background:black; width:300px; height:300px; z-index:1; } .dialog .eye { width:200px; height:200px; position:absolute; left:50px; top:50px; z-index:2; } #container { position:relative; } .line { position:absolute; left:0px; top:0px; font-size:0px; z-index:10; background:green; } .btnGroup { text-align:center; } .btnGroup button { width:50px; height:40px; } .dialog.output { top:400px; display:none; } #power { border:1px solid green; position:fixed; right:20px; bottom:20px; color:green; line-height:50px; font-size:30px; } .title { line-height:50px; font-size:25px; color:#8F8383; text-shadow:0px 0px 3px green; text-align:center; } </style> </head> <body> <div> <div id="container"> <div></div> <img src="finger.png" /> </div> <div> <button id="vSee">竖向扫描</button> <button id="hSee">横向扫描</button> <button id="bSee">双向扫描</button> <button id="dSee">深度扫描</button> </div> </div> <div id="outputContainer"> <img src="finger.png" /> </div> </body> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> var container = $("#container"); var outputContainer = $("#outputContainer"); function Line(type) { var self = this; self.type = type || "V"; var body = $("<div></div>"); switch(this.type) { case "V": // 竖直 body.css({ "width": "1px", "height": "300px" }); break; case "H": // 水平 body.css({ "width": "300px", "height": "1px" }); break; } container.append(body); self.body = body; self.direct = self.type === "V" "; self.run = function() { switch(self.direct) { case "L": self.body.animate({"left":0}, 1000, null, function() { self.direct = "R"; self.run(); }); break; case "R": self.body.animate({"left":300}, 1000, null, function() { self.direct = "L"; self.run(); }); break; case "T": self.body.animate({"top":0}, 1000, null, function() { self.direct = "B"; self.run(); }); break; case "B": self.body.animate({"top":300}, 1000, null, function() { self.direct = "T"; self.run(); }); break; } } self.run(); } var lineArray = []; function output(type, time, opactiy) { time = time || 2000; var initHeight = type === "H" ? 0 : 300; var initWidth = type === "H" ? 300 : 0; type === "B" && (initHeight = initWidth = 0); outputContainer.css({ "height": initHeight, "width": initWidth, "display": "block", "opacity": opactiy || 1 }); outputContainer.animate({"height":300, "width":300}, time, null); } function clear() { for(var i=0, len=lineArray.length; i<len; i++) { var line = lineArray[i]; line.body.stop().remove(); } container.find(".line").remove(); outputContainer.stop().css({"display": "none", "opacity": 0}); } $("#hSee").click(function() { clear(); lineArray.push(new Line("H")); output("H", null, 0.5); }); $("#vSee").click(function() { clear(); lineArray.push(new Line("V")); output("V", null, 0.5); }); $("#bSee").click(function() { clear(); lineArray.push(new Line("H"), new Line("V")); output("B", 3500, 0.8); }); $("#dSee").click(function() { clear(); for(var i=0; i<5; i++) { (function(index) { setTimeout(function() { lineArray.push(new Line("H"), new Line("V")); }, index*200); })(i); } output("B", 5000, 1.0); }); </script> </html>
完整实例代码点击此处本站下载。
希望本文所述对大家jQuery程序设计有所帮助。