$.ajaxPrefilter(function(options, originalOptions, jqXHR) {
    if (options.url === '/api/endpoint') {
        // 拦截特定URL的请求
        var mockResponse = { data: 'mocked response' };
        jqXHR.done(function() {
            options.success(mockResponse);
        });
        return false; // 阻止实际请求发送
    }
});

$.ajaxSetup({
    beforeSend: function(jqXHR, settings) {
        if (settings.url === '/api/endpoint') {
            // 模拟响应
            var deferred = $.Deferred();
            deferred.resolve({ data: 'mocked response' });
            return deferred.promise();
        }
    }
});

// 首先引入jquery.mockjax.js
$.mockjax({
    url: '/api/endpoint',
    responseText: {
        status: 'success',
        data: { id: 123, name: 'Mocked Data' }
    },
    responseTime: 200 // 模拟延迟
});

var originalAjax = $.ajax;
$.ajax = function(options) {
    if (options.url === '/api/endpoint') {
        return $.Deferred().resolve({ data: 'mocked response' }).promise();
    }
    return originalAjax.apply(this, arguments);
};

// 模拟成功响应
function mockSuccess(url, responseData) {
    $.mockjax({
        url: url,
        status: 200,
        responseText: responseData
    });
}

// 模拟失败响应
function mockError(url, statusCode, errorMessage) {
    $.mockjax({
        url: url,
        status: statusCode,
        responseText: { error: errorMessage }
    });
}

// 使用示例
mockSuccess('/api/users', [{id: 1, name: 'John'}, {id: 2, name: 'Jane'}]);
mockError('/api/users/999', 404, 'User not found');

// 清除所有模拟
$.mockjax.clear();

// 清除特定模拟
var mockId = $.mockjax({ /* ... */ });
$.mockjax.clear(mockId);