jQuery.ajax实现根据不同的Content-Type做出不同的响应

$.ajax({‘url‘: ‘GetWatermarkInfo.ashx‘,‘type‘:‘post‘,‘data‘: { ‘bgstyle‘: bgstyle, ‘watermark‘: watermark },success: function (data, status, xhr) {//使用XMLHttpRequest对象的getResponseHeader方法来获取content-type信息var ct = xhr.getResponseHeader("content-type") || "";if (ct.indexOf(‘application/json‘) > -1) {if (data.Status == ‘error‘) {alert(data.Message);}else if (data.Status == ‘ok‘) {$(‘#watermarkImg‘).attr(‘src‘, ‘GenerateWatermark.ashx?bgstyle=‘ + bgstyle + ‘&watermark=‘ + watermark);}else {alert(‘unknown error!‘);}}else {alert(‘unexpectecd content-type!‘);}},error: function (message) {alert(‘error: ‘ + message);}})