我使用原型进行AJAX开发,并且使用如下代码:
somefunction: function(){ var result = ""; myAjax = new Ajax.Request(postUrl, { method: 'post', postBody: postData, contentType: 'application/x-www-form-urlencoded', onComplete: function(transport){ if (200 == transport.status) { result = transport.responseText; } } }); return result; }
而且我发现“结果”是一个空字符串。所以,我尝试了这个:
somefunction: function(){ var result = ""; myAjax = new Ajax.Request(postUrl, { method: 'post', postBody: postData, contentType: 'application/x-www-form-urlencoded', onComplete: function(transport){ if (200 == transport.status) { result = transport.responseText; return result; } } }); }
但这也没有用。如何获取responseText供其他方法使用?
请记住,在someFunction完成工作后很久才调用onComplete。您需要做的是将回调函数作为参数传递给somefunction。当进程完成工作时(即onComplete),将调用此函数:
somefunction: function(callback){ var result = ""; myAjax = new Ajax.Request(postUrl, { method: 'post', postBody: postData, contentType: 'application/x-www-form-urlencoded', onComplete: function(transport){ if (200 == transport.status) { result = transport.responseText; callback(result); } } }); } somefunction(function(result){ alert(result); });