js 生成一维码(条形码)

1、js代码：

(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('')) + '' + code + ''; 
  }

  function bar2html(s) {
    for(var pos=0, sb=[]; pos

'); } 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; i106) 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); }

2.css代码如下：

.barcode { 
  float:left;
  clear:both;
  padding: 0 10px; /*quiet zone*/
  overflow:auto;
  height:0.5in; /*size*/ 
}
.right { float:right; }
.barcode + * { clear:both; }
.barcode div { 
  float:left;
  height: 0.35in; /*size*/
}
.barcode .bar1 { border-left:1px solid black; }
.barcode .bar2 { border-left:2px solid black; }
.barcode .bar3 { border-left:3px solid black; }
.barcode .bar4 { border-left:4px solid black; }
.barcode .space0 { margin-right:0 }
.barcode .space1 { margin-right:1px }
.barcode .space2 { margin-right:2px }
.barcode .space3 { margin-right:3px }
.barcode .space4 { margin-right:4px }
.barcode label { 
  clear:both; 
  display:block; 
  text-align:center;  
  font: 0.125in/100% helvetica; /*size*/
}
/*** bigger ******************************************/
.barcode2 { 
  float:left;
  clear:both;
  padding: 0 10px; /*quiet zone*/
  overflow:auto;
  height:1in; /*size*/ 
}
.barcode2 + * { clear:both; }
.barcode2 div { 
  float:left;
  height: 0.7in; /*size*/
}
.barcode2 .bar1 { border-left:2px solid black; }
.barcode2 .bar2 { border-left:4px solid black; }
.barcode2 .bar3 { border-left:6px solid black; }
.barcode2 .bar4 { border-left:8px solid black; }
.barcode2 .space0 { margin-right:0 }
.barcode2 .space1 { margin-right:2px }
.barcode2 .space2 { margin-right:4px }
.barcode2 .space3 { margin-right:6px }
.barcode2 .space4 { margin-right:8px }
.barcode2 label { 
  clear:both; 
  display:block; 
  text-align:center;  
  font: 0.250in/100% helvetica; /*size*/
}

3.html代码如下：

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