用于替代ajax的 fetch API
fetch is the new and easy api for js to make request to the server, it replaces XMLHttpRequest.
Objects:
fetch, Request, Reponse, Headers
Usage:
fetch('/path/to/fetch',
{method: 'GET'}
).then(function (response) {
// process response;
return response.json(); // returns a json promise
return response.text(); // returns a text promise
return ret; // will be consumed in the next then funcion
}).then(function (data) {
// data is a json or text
// process
}).catch(function (err) {
// error handling
});
notice, the useful method
Advanced: