Example of fingerprint scanning effect implemented by jQuery (with demo and demo source code download)

Example of fingerprint scanning effect implemented by jQuery (with demo and demo source code download)_jquery

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Release： 2016-05-16 15:18:13

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The example in this article describes the fingerprint scanning effect implemented by jQuery. Share it with everyone for your reference, the details are as follows:

The screenshot of the running effect is as follows:

Click here to view the online demonstration.

The specific code is as follows:

<!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" &#63; "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" &#63; 0 : 300;
      var initWidth = type === "H" &#63; 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>

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Click here for the complete example codeDownload from this site.

Readers who are interested in more content related to jQuery special effects can check out the special topics on this site: "Summary of jQuery animation and special effects usage" and "Summary of common classic jQuery special effects"

I hope this article will be helpful to everyone in jQuery programming.