$.ajax({
type : 'put',url : '',data : loaddata,async : false,dataType: 'json',contentType: "application/json;charset=utf-8",beforeSend: function () {
// 禁用按钮防止重复提交
$("#submit").attr({ disabled: "disabled" });
$("loading").show();
},success: function (data) {
},complete: function () {
$("#submit").removeAttr("disabled");
$("loading").hide();
},error: function (data) {
console.info("error: " + data.responseText);
}
});