使用fetch代替ajax请求 post传递方式

let postData = {a:‘b‘};fetch(‘http://data.xxx.com/Admin/Login/login‘, { ?method: ‘POST‘, ?mode: ‘cors‘, ?credentials: ‘include‘, ?headers: { ???‘Content-Type‘: ‘application/x-www-form-urlencoded‘ ?}, ?body: JSON.stringify(postData)}).then(function(response) { ?console.log(response);});