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我遇到了使用npm模块 - signature_pad的问题,似乎无法设置它。目前我使用的都是香草HTML,CSS和JS。此刻,我不断收到错误消息:SignaturePad is not defined
。我尝试从我的package.JSON文件使用import SignaturePad from 'signature_pad'
导入模块,但是我收到一个错误,说unexpected token import
。SignaturePad未定义 - 无法将signature_pad模块初始化为脚本
我在下面附加了我的HTML和JS代码。有什么建议么?
的JavaScript
var wrapper1 = document.getElementById("signature-pad-1"),
canvas1 = wrapper1.querySelector("canvas"),
signaturePad1;
resizeCanvas(canvas1);
signaturePad1 = new SignaturePad(canvas1);
function resizeCanvas(canvas) {
var ratio = window.devicePixelRatio || 1;
canvas.width = canvas.offsetWidth * ratio;
canvas.height = canvas.offsetHeight * ratio;
canvas.getContext("2d").scale(ratio, ratio);
}
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Sign Here</title>
<link rel="stylesheet" href="main.css">
</head>
<body>
<div class="contract">
<h1>Signature Below</h1>
<p>ABC</p>
<div id="signature-pad-1" class="m-signature-pad">
<div class="m-signature-pad--body">
<canvas></canvas>
</div>
</div>
<script type="text/javascript" src="./js/sig_pad.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/signature_pad/1.5.3/signature_pad.min.js"></script>
</body>
</html>