ajax basic 认证

//需要Base64见：http://www.webtoolkit.info/javascript-base64.html
function make_base_auth(user, password) {
var tok = user + ':' + password;
var hash = Base64.encode(tok);
return "Basic " + hash;
}
var auth = make_base_auth('user', 'pwd');
// 原始JavaScript
//xml = new XMLHttpRequest();
//xml.setRequestHeader('Authorization', auth);
//xml.open('GET', url)
// jQuery
$.ajax({
url: "http://xxx.com",
method: 'GET',
beforeSend: function (req) {
req.setRequestHeader('Authorization', auth);
},
success: function (msg) {
//构造echarts

}
});