Question

我使用下面的代码来获取签名，我想在单击按钮时将签名保存到本地驱动器。请从下面的代码中指导我如何实现。

代码来源： https://codeload.github.com/thomasjbradley/signature-pad/legacy.zip/master

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <title>Require a Drawn Signature · Signature Pad</title>
  <style>
    body { font: normal 100.01%/1.375 "Helvetica Neue",Helvetica,Arial,sans-serif; }
  </style>
  <link href="../assets/jquery.signaturepad.css" rel="stylesheet">
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>

<script>
function signatureSave() {
    var canvas = document.getElementById("newSignature");// save canvas image as data url (png format by default)
    var dataURL = canvas.toDataURL("image/png");

    document.getElementById("saveSignature").src = dataURL;
};
</script>
</head>
<body>
  <form method="post" action="" class="sigPad">
    <label for="name">Print your name</label>
    <input type="text" name="name" id="name" class="name">
    <p class="drawItDesc">Draw your signature</p>
    <ul class="sigNav">
      <li class="drawIt"><a href="#draw-it" >Draw It</a></li>
      <li class="clearButton"><a href="#clear">Clear</a></li>
    </ul>
    <div class="sig sigWrapper">
      <div class="typed"></div>
      <canvas class="pad" width="198" id="newSignature" height="55"></canvas>
      <input type="hidden" name="output" class="output">
    </div>
<button type="button" onClick="signatureSave()">Save signature</button>

<img id="saveSignature" alt="Saved image png"/>
  </form>

  <script src="../jquery.signaturepad.js"></script>
  <script>
    $(document).ready(function() {
      $('.sigPad').signaturePad({drawOnly:true});
    });
  </script>
  <script src="../assets/json2.min.js"></script>
</body>

Answer 1

localStorage.setItem("signature", dataURL);

var signature = localStorage.getItem("signature");

如何将签名保存到本地驱动器

1 个答案: