how to implement a promise with daisy chaining in angular
private firstAction():Promise<any> {
return new Promise<any>(
(resolve, reject) => { ... }
);
}
private secondAction():Promise<any> {
return new Promise<any>(
(resolve, reject) => { ... }
);
}
execute() {
this.firstAction().then(
(firstResult:any) => this.secondAction().then(
(secondResult:any) => { ... }
);
)
}
new Promise(function(resolve, reject) {
setTimeout(() => resolve(1), 1000); // (*)
}).then(function(result) { // (**)
alert(result); // 1
return result * 2;
}).then(function(result) { // (***)
alert(result); // 2
return result * 2;
}).then(function(result) {
alert(result); // 4
return result * 2;
});