jQuery實現(xiàn)的指紋掃描效果實例(附演示與demo源碼下載)

更新時間：2016年01月26日 09:19:28 作者：m1870164

這篇文章主要介紹了jQuery實現(xiàn)的指紋掃描效果,以完整實例形式分析了jQuery實現(xiàn)圖像按照指定模式顯示的相關(guān)實現(xiàn)技巧,并附帶附示例演示與demo源碼供讀者下載參考,需要的朋友可以參考下

本文實例講述了jQuery實現(xiàn)的指紋掃描效果。分享給大家供大家參考，具體如下：

運行效果截圖如下：

點擊此處查看在線演示效果。

具體代碼如下：

<!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">豎向掃描</button>
        <button id="hSee">橫向掃描</button>
        <button id="bSee">雙向掃描</button>
        <button id="dSee">深度掃描</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": // 豎直
          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>

完整實例代碼點擊此處本站下載。

更多關(guān)于jQuery特效相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《jQuery動畫與特效用法總結(jié)》及《jQuery常見經(jīng)典特效匯總》

希望本文所述對大家jQuery程序設(shè)計有所幫助。

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