Here's an example which might explain the decoupling a bit: // You may call this syntactic sugar var p1 = new Promise(function(response, reject) {

Here's an example which might explain the decoupling a bit: // You may call this syntactic sugar var p1 = new Promise(function(response, reject) { setTimeout(function(){ response(Math.random() * 1000); }); }).then(function(val){ console.log(val); return val; }); // But here's the magical decoupled call p1.then(function(val) { console.log(val); });