简介：
通过js生成条形码
效果展示：
示例代码：
<!--
Created by IntelliJ IDEA.
User: songsir
Date: 2018/11/26
Time: 10:49
-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS生成二维码</title>
<script src="js/barcode.js"></script>
<script src="js/jQuery.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>
$(function () {
// showDiv：代表需要显示的divID，
// textVlaue ： 代表需要生成的值，
// barcodeType：代表生成类型(A、B、C)三种类型
createBarcode('barcode', 'http://127.0.0.1:8094/msg/details/forward?forwardUrl=am81elBVSjYzMVkxR252RzNEZkNqMG5HNnhuTmRBaGU=', 'B')
// createBarcode('barcode', 'hello', 'B')
});
</script>
</body>
</html>
barcode.js
/**
* @Description 生成条形码
* @Auther songsir
* @Date 2018/11/26
*/
/*****************************************************************start*****************************************************/
(function () {
if (!exports) var exports = window;
var BARS = [212222, 222122, 222221, 121223, 121322, 131222, 122213, 122312, 132212, 221213, 221312, 231212, 112232, 122132, 122231, 113222, 123122, 123221, 223211, 221132, 221231, 213212, 223112, 312131, 311222, 321122, 321221, 312212, 322112, 322211, 212123, 212321, 232121, 111323, 131123, 131321, 112313, 132113, 132311, 211313, 231113, 231311, 112133, 112331, 132131, 113123, 113321, 133121, 313121, 211331, 231131, 213113, 213311, 213131, 311123, 311321, 331121, 312113, 312311, 332111, 314111, 221411, 431111, 111224, 111422, 121124, 121421, 141122, 141221, 112214, 112412, 122114, 122411, 142112, 142211, 241211, 221114, 413111, 241112, 134111, 111242, 121142, 121241, 114212, 124112, 124211, 411212, 421112, 421211, 212141, 214121, 412121, 111143, 111341, 131141, 114113, 114311, 411113, 411311, 113141, 114131, 311141, 411131, 211412, 211214, 211232, 23311120]
, START_BASE = 38
, STOP = 106;
function code128(code, barcodeType) {
if (arguments.length < 2)
barcodeType = code128Detect(code);
if (barcodeType == 'C' && code.length % 2 == 1)
code = '0' + code;
var a = parseBarcode(code, barcodeType);
return bar2html(a.join('')) + '<label>' + code + '</label>';
}
function bar2html(s) {
for (var pos = 0, sb = []; pos < s.length; pos += 2) {
sb.push('<div class="bar' + s.charAt(pos) + ' space' + s.charAt(pos + 1) + '"></div>');
}
return sb.join('');
}
function code128Detect(code) {
if (/^[0-9]+$/.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);
}
