RxJS – Suggest GH Users esnextbin
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November 6, 2016 15:02
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RxJS – Suggest GH Users
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<!doctype html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title>ESNextbin Sketch</title> | |
<!-- put additional styles and scripts here --> | |
<script src="https://code.jquery.com/jquery-1.7.2.js"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/4.1.0/rx.all.js"></script> | |
<style> | |
body { | |
font-family: sans-serif; | |
padding: 10px; | |
} | |
h3 { | |
font-weight: bold; | |
display: inline-block; | |
padding: 0; | |
margin: 0; | |
} | |
.refresh { | |
font-size: 80%; | |
margin-left: 10px; | |
} | |
.header { | |
background: #ECECEC; | |
padding: 5px; | |
} | |
.suggestions { | |
border: 2px solid #ECECEC; | |
} | |
li { | |
padding: 5px; | |
} | |
li img { | |
width: 40px; | |
height: 40px; | |
border-radius: 20px; | |
} | |
li .username, li .close { | |
display: inline-block; | |
position: relative; | |
bottom: 15px; | |
left: 5px; | |
} | |
</style> | |
</head> | |
<body> | |
<div class="container"> | |
<div class="header"> | |
<h3>Who to follow</h3><a href="#" class="refresh">Refresh</a> | |
</div> | |
<ul class="suggestions"> | |
<li class="suggestion1"> | |
<img /> | |
<a href="#" target="_blank" class="username">this will not be displayed</a> | |
<a href="#" class="close close1">x</a> | |
</li> | |
<li class="suggestion2"> | |
<img /> | |
<a href="#" target="_blank" class="username">neither this</a> | |
<a href="#" class="close close2">x</a> | |
</li> | |
<li class="suggestion3"> | |
<img /> | |
<a href="#" target="_blank" class="username">nor this</a> | |
<a href="#" class="close close3">x</a> | |
</li> | |
</ul> | |
</div> | |
</body> | |
</html> |
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var refreshButton = document.querySelector('.refresh'); | |
var closeButton1 = document.querySelector('.close1'); | |
var closeButton2 = document.querySelector('.close2'); | |
var closeButton3 = document.querySelector('.close3'); | |
var refreshClickStream = Rx.Observable.fromEvent(refreshButton, 'click'); | |
var close1Clicks = Rx.Observable.fromEvent(closeButton1, 'click'); | |
var close2Clicks = Rx.Observable.fromEvent(closeButton2, 'click'); | |
var close3Clicks = Rx.Observable.fromEvent(closeButton3, 'click'); | |
var startupRequestStream = Rx.Observable.just('https://api.github.com/users'); | |
var requestOnRefreshStream = refreshClickStream | |
.map(ev => { | |
var randomOffset = Math.floor(Math.random()*500); | |
return 'https://api.github.com/users?since=' + randomOffset; | |
}); | |
var requestStream = startupRequestStream.merge(requestOnRefreshStream); | |
var responseStream = requestStream | |
.flatMap(requestUrl => | |
Rx.Observable.fromPromise(jQuery.getJSON(requestUrl)) | |
) | |
.shareReplay(1); | |
function getRandomUser(listUsers) { | |
return listUsers[Math.floor(Math.random()*listUsers.length)]; | |
} | |
function createSuggestionStream(responseStream, closeClickStream) { | |
return responseStream.map(getRandomUser) | |
.startWith(null) | |
.merge(refreshClickStream.map(ev => null)) | |
.merge( | |
closeClickStream.withLatestFrom(responseStream, | |
(x, R) => getRandomUser(R)) | |
); | |
} | |
var suggestion1Stream = createSuggestionStream(responseStream, close1Clicks); | |
var suggestion2Stream = createSuggestionStream(responseStream, close2Clicks); | |
var suggestion3Stream = createSuggestionStream(responseStream, close3Clicks); | |
// Rendering --------------------------------------------------- | |
function renderSuggestion(suggestedUser, selector) { | |
var suggestionEl = document.querySelector(selector); | |
if (suggestedUser === null) { | |
suggestionEl.style.visibility = 'hidden'; | |
} else { | |
suggestionEl.style.visibility = 'visible'; | |
var usernameEl = suggestionEl.querySelector('.username'); | |
usernameEl.href = suggestedUser.html_url; | |
usernameEl.textContent = suggestedUser.login; | |
var imgEl = suggestionEl.querySelector('img'); | |
imgEl.src = ""; | |
imgEl.src = suggestedUser.avatar_url; | |
} | |
} | |
suggestion1Stream.subscribe(user => { | |
renderSuggestion(user, '.suggestion1'); | |
}); | |
suggestion2Stream.subscribe(user => { | |
renderSuggestion(user, '.suggestion2'); | |
}); | |
suggestion3Stream.subscribe(user => { | |
renderSuggestion(user, '.suggestion3'); | |
}); |
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{ | |
"name": "esnextbin-sketch", | |
"version": "0.0.0" | |
} |
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'use strict'; | |
var refreshButton = document.querySelector('.refresh'); | |
var closeButton1 = document.querySelector('.close1'); | |
var closeButton2 = document.querySelector('.close2'); | |
var closeButton3 = document.querySelector('.close3'); | |
var refreshClickStream = Rx.Observable.fromEvent(refreshButton, 'click'); | |
var close1Clicks = Rx.Observable.fromEvent(closeButton1, 'click'); | |
var close2Clicks = Rx.Observable.fromEvent(closeButton2, 'click'); | |
var close3Clicks = Rx.Observable.fromEvent(closeButton3, 'click'); | |
var startupRequestStream = Rx.Observable.just('https://api.github.com/users'); | |
var requestOnRefreshStream = refreshClickStream.map(function (ev) { | |
var randomOffset = Math.floor(Math.random() * 500); | |
return 'https://api.github.com/users?since=' + randomOffset; | |
}); | |
var requestStream = startupRequestStream.merge(requestOnRefreshStream); | |
var responseStream = requestStream.flatMap(function (requestUrl) { | |
return Rx.Observable.fromPromise(jQuery.getJSON(requestUrl)); | |
}).shareReplay(1); | |
function getRandomUser(listUsers) { | |
return listUsers[Math.floor(Math.random() * listUsers.length)]; | |
} | |
function createSuggestionStream(responseStream, closeClickStream) { | |
return responseStream.map(getRandomUser).startWith(null).merge(refreshClickStream.map(function (ev) { | |
return null; | |
})).merge(closeClickStream.withLatestFrom(responseStream, function (x, R) { | |
return getRandomUser(R); | |
})); | |
} | |
var suggestion1Stream = createSuggestionStream(responseStream, close1Clicks); | |
var suggestion2Stream = createSuggestionStream(responseStream, close2Clicks); | |
var suggestion3Stream = createSuggestionStream(responseStream, close3Clicks); | |
// Rendering --------------------------------------------------- | |
function renderSuggestion(suggestedUser, selector) { | |
var suggestionEl = document.querySelector(selector); | |
if (suggestedUser === null) { | |
suggestionEl.style.visibility = 'hidden'; | |
} else { | |
suggestionEl.style.visibility = 'visible'; | |
var usernameEl = suggestionEl.querySelector('.username'); | |
usernameEl.href = suggestedUser.html_url; | |
usernameEl.textContent = suggestedUser.login; | |
var imgEl = suggestionEl.querySelector('img'); | |
imgEl.src = ""; | |
imgEl.src = suggestedUser.avatar_url; | |
} | |
} | |
suggestion1Stream.subscribe(function (user) { | |
renderSuggestion(user, '.suggestion1'); | |
}); | |
suggestion2Stream.subscribe(function (user) { | |
renderSuggestion(user, '.suggestion2'); | |
}); | |
suggestion3Stream.subscribe(function (user) { | |
renderSuggestion(user, '.suggestion3'); | |
}); |
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