for example, one listens for input input and the other gets the value of input when the button is clicked
for example, one listens for input input and the other gets the value of input when the button is clicked
let button = document.querySelector('button');
let input = document.querySelectorAll('input')[0];
let input$ = Rx.Observable.fromEvent(input, 'keyup')
.pluck('target', 'value');
let button$ = Rx.Observable.fromEvent(button, 'click');
button$.withLatestFrom(input$, (_, data) => data)
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