js 生成二维码

$(".good_info").on('click',function () {
    var id = $(this).data('id');
    var string = 'http://qr.liantu.com/api.php?text=https://hostname/wx.php/Good/detail?gid='+id;
        layer.ready(function(){
        layer.open({
            type: 2,
            area: ['300px', '350px'],
            content: string,
            title:'请使用微信扫描'
        });
    });
});