JavaScriptの非同期処理(Promise)

Promise.resolve().then(function() {
    return new Promise(function(fulfilled, rejected) {
        //処理1
        fulfilled();
    });
}).then(function() {
    return new Promise(function(fulfilled, rejected) {
        //処理2
        fulfilled();
    });
}).then(function() {
    return new Promise(function(fulfilled, rejected) {
        //処理3
    });
})