下面的代码对用户名和密码的设置有什么效果呢？

下面的代码对用户名和密码的设置有什么效果呢？

function Info(props){
let url = 'http://localhost:8080/' + props.menu;
let username = 'root';
let password = '123';
let headers = new. Headers();
headers,set('Authorizatiop', 'Basic ' + Buffer, from(username + "." + password).toString('base64));
fetch(url, {
method: 'GET',
headers: headers,
credentials: 'include'
}).then(response => response.text())
.then(data => {
document.getElementByld("info").innerText = data
}).catch(function (ex){
console.log('parsing failed' , ex)
})
return (
<div>
<h1 id="info"Welcome/h1></div>
);
}