function request(url) {return new Promise((resolve, reject) => {fetch(url).then(response => {if (response.ok) {return response.json();} else {throw new Error('请求失败');}}).then(data => {resolve(data);}).catch(error => {reject(error);});});
}// 使用示例
request('xxx').then(data => {console.log('请求成功，返回数据：', data);}).catch(error => {console.error('请求失败，错误信息：', error);});