本文介绍原生的 ① JS 生成条形码 和 ② 依赖第三方 JS(JsBarcode)处理前端生成 条形码的需求,注意:前端生成 条形码 的性能值得考虑哦。
一、基础版
(1)核心功能
- 生成条形码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>生成条形码</title>
<!-- <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script> -->
<style>
.barcode {
margin-top: 20px;
text-align: center
}
.barcode+* {
clear: both
}
#barcode {
white-space: nowrap;
zoom: .5;
/* -webkit-transform: scaleX( .5); transform: scaleX(.5);*/
}
#barcode div {
display: inline-block;
height: 120px
}
.barcode .bar1 {
border-left: 2px solid black
}
.barcode .bar2 {
border-left: 4px solid black
}
.barcode .bar3 {
border-left: 6px solid black
}
.barcode .bar4 {
border-left: 8px solid black
}
.barcode .space0 {
margin-right: 0
}
.barcode .space1 {
margin-right: 2px
}
.barcode .space2 {
margin-right: 4px
}
.barcode .space3 {
margin-right: 6px
}
.barcode .space4 {
margin-right: 8px
}
.barcode label {
clear: both;
display: block;
text-align: center;
font: 16px/34px helvetica
}
</style>
</head>
<body>
<div class="barcode code-box">
<div id="barcode"></div>
</div>
<script>
// jQuery的写法,页面加载触发的事件
// $(function() {
// });
window.onload = function(){
createBarcode('barcode', 'HELLO', 'B')
}
</script>
</body>
<script type="text/javascript">
/**
* @Description 生成条形码
* @Auther songsir
* @Date 2018/11/26
*/
/*****************************************************************start*****************************************************/
(function() {
if (!exports) var exports = window;
var BARS = [212222, 222122, 222221, 121223, 121322, 131222, 122213, 122312, 132212, 221213, 221312, 231212,
112232, 122132, 122231, 113222, 123122, 123221, 223211, 221132, 221231, 213212, 223112, 312131,
311222, 321122, 321221, 312212, 322112, 322211, 212123, 212321, 232121, 111323, 131123, 131321,
112313, 132113, 132311, 211313, 231113, 231311, 112133, 112331, 132131, 113123, 113321, 133121,
313121, 211331, 231131, 213113, 213311, 213131, 311123, 311321, 331121, 312113, 312311, 332111,
314111, 221411, 431111, 111224, 111422, 121124, 121421, 141122, 141221, 112214, 112412, 122114,
122411, 142112, 142211, 241211, 221114, 413111, 241112, 134111, 111242, 121142, 121241, 114212,
124112, 124211, 411212, 421112, 421211, 212141, 214121, 412121, 111143, 111341, 131141, 114113,
114311, 411113, 411311, 113141, 114131, 311141, 411131, 211412, 211214, 211232, 23311120
],
START_BASE = 38,
STOP = 106;
function code128(code, barcodeType) {
if (arguments.length < 2)
barcodeType = code128Detect(code);
if (barcodeType == 'C' && code.length % 2 == 1)
code = '0' + code;
var a = parseBarcode(code, barcodeType);
return bar2html(a.join('')) + '<label>' + code + '</label>';
}
function bar2html(s) {
for (var pos = 0, sb = []; pos < s.length; pos += 2) {
sb.push('<div class="bar' + s.charAt(pos) + ' space' + s.charAt(pos + 1) + '"></div>');
}
return sb.join('');
}
function code128Detect(code) {
if (/^[0-9]+$/.test(code)) return 'C';
if (/[a-z]/.test(code)) return 'B';
return 'A';
}
function parseBarcode(barcode, barcodeType) {
var bars = [];
bars.add = function(nr) {
var nrCode = BARS[nr];
this.check = this.length == 0 ? nr : this.check + nr * this.length;
this.push(nrCode || ("UNDEFINED: " + nr + "->" + nrCode));
};
bars.add(START_BASE + barcodeType.charCodeAt(0));
for (var i = 0; i < barcode.length; i++) {
var code = barcodeType == 'C' ? +barcode.substr(i++, 2) : barcode.charCodeAt(i);
converted = fromType[barcodeType](code);
if (isNaN(converted) || converted < 0 || converted > 106) throw new Error("Unrecognized character (" +
code + ") at position " + i + " in code '" + barcode + "'.");
bars.add(converted);
}
bars.push(BARS[bars.check % 103], BARS[STOP]);
return bars;
}
var fromType = {
A: function(charCode) {
if (charCode >= 0 && charCode < 32) return charCode + 64;
if (charCode >= 32 && charCode < 96) return charCode - 32;
return charCode;
},
B: function(charCode) {
if (charCode >= 32 && charCode < 128) return charCode - 32;
return charCode;
},
C: function(charCode) {
return charCode;
}
};
//--| Export
exports.code128 = code128;
})();
/**
* showDiv:代表需要显示的divID,
* textVlaue : 代表需要生成的值,
* barcodeType:代表生成类型(A、B、C)三种类型
*/
function createBarcode(showDiv, textValue, barcodeType) {
var divElement = document.getElementById(showDiv);
divElement.innerHTML = code128(textValue, barcodeType);
}
</script>
</html>
(2)展示效果
二、升级版
(1)完整源码
前提:引入 jQuery 和 JsBarcode 插件。
官方下载对应的JS,或者直接引入 CDN资源,如下:
<script src="https://cdn.jsdelivr.net/jsbarcode/3.3.20/JsBarcode.all.min.js" type="text/javascript" charset="utf-8"></script>
完整代码如下:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>条形码-案例</title>
<!-- 引入外部 CDN 的 JsBarcode 插件 -->
<script src="https://cdn.jsdelivr.net/jsbarcode/3.3.20/JsBarcode.all.min.js" type="text/javascript"
charset="utf-8"></script>
</head>
<body>
<h5>code128</h5>
<svg id="code128"></svg>
<h5>ean-13</h5>
<svg id="ean-13"></svg>
<svg id="ean-8"></svg>
<svg id="ean-5"></svg>
<svg id="ean-2"></svg>
<h5>upc-a</h5>
<svg id="upc-a"></svg>
<h5>code39</h5>
<svg id="code39"></svg>
<h5>itf-14</h5>
<svg id="itf-14"></svg>
<h5>msi</h5>
<svg id="msi"></svg>
<h5>pharmacode</h5>
<svg id="pharmacode"></svg>
<script type="text/javascript">
JsBarcode("#code128", "Hi!", {
// textAlign: "left", // 字体向左靠齐
// textPosition: "top",// 字体内容位置
// fontOptions: "bold", // 字体加粗
// font: "cursive", // 字体样式
// fontSize: 20, // 字体大小
// background: "#4b8b7f", // 背景颜色
// displayValue: false, // 是否显示条形码内容
// height: 50, // 每个条纹的最高指定高度
// width: 6, // 每个条纹的最高指定宽度
lineColor: "#ffffff",
});
JsBarcode("#ean-13", "1234567890128", {
format: "ean13"
});
JsBarcode("#ean-8", "12345670", {
format: "ean8"
});
JsBarcode("#ean-5", "12345", {
format: "ean5"
});
JsBarcode("#ean-2", "12", {
format: "ean2"
});
JsBarcode("#upc-a", "123456789012", {
format: "upc"
});
JsBarcode("#code39", "Hello", {
format: "code39"
});
JsBarcode("#itf-14", "1234567890123", {
format: "itf14"
});
JsBarcode("#msi", "123456", {
format: "msi"
});
JsBarcode("#pharmacode", "12345", {
format: "pharmacode"
});
</script>
</body>
</html>
(2)效果展示
附录
- JsBarcode 插件官方示例:GitHub - lindell/JsBarcode: Barcode generation library written in JavaScript that works in both the browser and on Node.js
- 支持条形码的类型:
// 支持的条形码种类
CODE128
CODE128 (automatic mode switching)
CODE128 A/B/C (force mode)
EAN
EAN-13
EAN-8
EAN-5
EAN-2
UPC (A)
UPC (E)
CODE39
ITF
ITF
ITF-14
MSI
MSI10
MSI11
MSI1010
MSI1110
Pharmacode
Codabar
如果对你有所帮助,感谢 点赞 - 收藏 - 分享