jQuery实现的指纹扫描效果实例(附演示与demo源码下载)

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 class="dialog">
      <div id="container">
        <div class="shape"></div>
        <img src="finger.png" class="eye" />
      </div>
      <div class="btnGroup">
        <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 class="dialog output" id="outputContainer">
      <img src="finger.png" class="eye" />
    </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 class='line'></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" ? "R" : "B";
      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。

更多关于jQuery特效相关内容感兴趣的读者可查看本站专题：《jQuery动画与特效用法总结》及《jQuery常见经典特效汇总》

希望本文所述对大家jQuery程序设计有所帮助。