JavaScript动态生成二维码图片_javascript技巧

var qrcode = new QRCode(document.getElementById("qrcode"), {
width : 200,
height : 200
}); 
var token='params';
var QRCodeUrl='http:\\www.baidu.com'+'/Share/ScanQRCode?token='+token;
qrcode.makeCode(QRCodeUrl);