小编典典
编辑：
最近对此表示赞同，我不得不说我不再这样做。$.ajax返回a，promise因此您可以直接使用promise以更一致和更可靠的方式执行我在这里所做的几乎所有工作。
function customRequest(u,d) {
var promise = $.ajax({
type: 'post',
data: d,
url: u
})
.done(function (responseData, status, xhr) {
// preconfigured logic for success
})
.fail(function (xhr, status, err) {
//predetermined logic for unsuccessful request
});
return promise;
}
然后用法如下：
// using `done` which will add the callback to the stack
// to be run when the promise is resolved
customRequest('whatever.php', {'somekey': 'somevalue'}).done(function (data) {
var n = 1,
m = 2;
alert(m + n + data);
});
// using fail which will add the callback to the stack
// to be run when the promise is rejected
customRequest('whatever.php', {'somekey': 'somevalue'}).fail(function (xhr, status, err) {
console.log(status, err);
});
// using then which will add callabcks to the
// success AND failure stacks respectively when
// the request is resolved/rejected
customRequest('whatever.php', {'somekey': 'somevalue'}).then(
function (data) {
var n = 1,
m = 2;
alert(m + n + data);
},
function (xhr, status, err) {
console.log(status, err);
});
当然，我一直都这样做。您可以在实际的成功Callack中执行回调，也可以将回调分配为成功回调：
function customRequest(u,d,callback) {
$.ajax({
type: "post",
url: u,
data:d,
success: function(data) {
console.log(data); // predefined logic if any
if(typeof callback == 'function') {
callback(data);
}
}
});
}
用法如下所示：
customRequest('whatever.php', {'somekey': 'somevalue'}, function (data) {
var n = 1,
m = 2;
alert(m + n + data);
});
-07-26
