ASP.NET实现二维码（QRCode）的创建和读取实例(2)

$(document).ready(function ()
{
    var options = {
        beforeSubmit: showRequest, 
        success: showResponse,         
        dataType: 'json',
        clearForm: true,           
        error: function (request, message, ex)
        {
            alert('错误：' + message);
        }
    };    
    $('#qrForm').ajaxForm(options);
});
function showRequest(formData, jqForm, options)
{
    return true;
}
function showResponse(responseText, statusText, xhr, $form)
{
    if (responseText[0].count == 0)
    {
        alert(responseText[0].list[0].error);
        return false;
    }
    $("#img_qr").attr("src", responseText[0].list[0].imgurl);
    $("#txt_readqr").val(responseText[0].list[0].qrtext);
    return false;