本文整理匯總了TypeScript中rxjs/operators.throttle函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript throttle函數的具體用法？TypeScript throttle怎麽用？TypeScript throttle使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了throttle函數的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: it
it('should raise error when promise rejects', (done: MochaDone) => {
const e1 = concat(of(1),
timer(10).pipe(mapTo(2)),
timer(10).pipe(mapTo(3)),
timer(50).pipe(mapTo(4))
);
const expected = [1, 2, 3];
const error = new Error('error');
e1.pipe(throttle((x: number) => {
if (x === 3) {
return new Promise((resolve: any, reject: any) => { reject(error); });
} else {
return new Promise((resolve: any) => { resolve(42); });
}
})).subscribe(
(x: number) => {
expect(x).to.equal(expected.shift()); },
(err: any) => {
expect(err).to.be.an('error', 'error');
expect(expected.length).to.equal(0);
done();
},
() => {
done(new Error('should not be called'));
}
);
});示例2: type
type('should support selectors of a different type', () => {
/* tslint:disable:no-unused-variable */
let o: Observable<number>;
let s: Observable<string>;
let r: Observable<number> = o.pipe(throttle((n) => s));
/* tslint:enable:no-unused-variable */
});示例3: throttle1
throttle1() {
// emit value every 1 second
const source = interval(1000);
// throttle for 2 seconds, emit latest value
const example = source.pipe(throttle(val => interval(2000)));
// output: 0...3...6...9
const subscribe = example.subscribe(val => console.log(val));
}示例4: constructor
/**
*
* @param period milliseconds
*/
constructor(
period?: number, // milliseconds
) {
super(period);
this.subject = new Subject<T>();
this.subscription = this.subject.pipe(
throttle(_ => interval(this.period)),
).subscribe((item: T) => super.next(item));
}