jSignature is a simple plug-in that simplifies signing in a browser window and allows users to write signatures with a mouse, pen, or finger. The following article will share with you a jsignature Chinese development tutorial, and briefly understand the usage of the jsignature plug-in. I hope it will be helpful to everyone!
jSignature captures signatures through vector outlines of strokes. jSignature can output PNG images and has great flexibility.
github:https://github.com/brinley/jSignature
http://www.unbolt.net/jSignature/ Part of English document
This article will finally bring a complete digitally signed demo and background processing PHP version. Please see the QQ group account at the bottom and enter the download. I want more people to join. Communicate and avoid detours
Please note that the best version of jquery you have used is relatively new. Mine is jquery2.1.4, and the version of jSignature is jSignature v2, because the newer the version, the better the effect of writing on h5 flow.
Please note that this document is based on the translation of the old version and some repairs based on personal experience
Finally there are some tips and personal experience
Note:
The latest version of this plug-in supports IE8. Please test on the local server and do not open it directly because some js file request protocols do not support the windows local file protocol
Differences between file:// and http requests
If you don’t know the difference in how to request the protocol, please don’t worry, go directly to the local server to test
Basically used method
<div id="signature"></div>
<script type="text/javascript" src="jquery.js"></script>
<script language="JavaScript" type="text/javascript" src="jSignature.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#signature").jSignature();
});
</script>If
is only quoted in html5, the browser needs to use
<div id="signature"></div>
<script type="text/javascript" src="jquery.js"></script>
<script language="JavaScript" type="text/javascript" src="jSignature.js"></script>
<!--[if lt IE 9]>
<script type="text/javascript" src="flashcanvas.js"></script>
<![endif]-->
<script type="text/javascript">
$(document).ready(function() {
$("#signature").jSignature();
});
</script>to solve this compatibility problem
Method:
| Method name | Usage method | Description |
|---|---|---|
| clear | .jSignature("clear") | Clear and reset the canvas |
| getData | .jSignature("getData", "base30 ") | Convert the canvas to a base64 encoded data string that can be saved as a string in any database when the form is posted or submitted |
| importData | .jSignature("importData",dataurl) | Update the existing jSignature canvas with the data URL extracted from the above getData method |
Option parameters:
| Description | Default value | |
|---|---|---|
| Define the width of the canvas. There is no % or px value (the new version can use percentage and px suffixes) | 250 | |
| Define the height of the canvas. There is no % or px value (the new version can use percentage and px suffixes) | 150 | |
| Define the color of the strokes on the canvas. Accepts any color hexadecimal value | #000 | |
| Defines the background color of the canvas. Accepts any color hexadecimal value | #fff | |
| Defines the thickness of the line. Accepts any positive value (also the width of the default canvas's horizontal line brush) | 1 | |
| Custom css class that defines the canvas | None |
The above is the detailed content of jsignature Chinese development tutorial. For more information, please follow other related articles on the PHP Chinese website!
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