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  <title>RxJS Operators</title>
  <script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.4/dist/global/Rx.umd.js"></script>
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<body>
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//emit four strings
const example = Rx.Observable.of('WAIT','ONE','SECOND','Last will display');
/*
    Only emit values after a second has passed between the last             emission, throw away all other values
*/
const debouncedExample = example.debounce(() => Rx.Observable.timer(1000));
/*
    In this example, all values but the last will be omitted
    output: 'Last will display'
*/
const subscribe = debouncedExample.subscribe(val => console.log(val));
//emit value every 1 second, ex. 0...1...2
const interval = Rx.Observable.interval(1000);
//raise the debounce time by 200ms each second
const debouncedInterval = interval.debounce(val => Rx.Observable.timer(val * 200))
/*
  After 5 seconds, debounce time will be greater than interval time,
  all future values will be thrown away
  output: 0...1...2...3...4......(debounce time over 1s, no values         emitted)
*/
const subscribeTwo = debouncedInterval.subscribe(val => console.log(`Example Two: ${val}`));
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