参考代码:
<canvas id="canvas"></canvas>
<script type="text/javascript">
var bw = new BWIPJS;
var opts = {};
var rot = 'N';
bw.bitmap(new Bitmap);
bw.scale(2, 2);
bw.push("THIS IS CODE 93");
bw.push(opts);
bw.call("code93", function(e) {
bw.bitmap().show('canvas', rot);
});
</script>