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rxjsのサンプル
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Rxデモ</title> | |
<style> | |
.hidden { | |
display: none; | |
} | |
</style> | |
</head> | |
<body> | |
<input id="query-field" type="text" name="user"> | |
<!-- {{{ --> | |
<ul> | |
<li class="query-target">aaa</li> | |
<li class="query-target">bbb</li> | |
<li class="query-target">zzz</li> | |
<li class="query-target">abc</li> | |
</ul> | |
<!-- }}} --> | |
<!-- script --> | |
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/rxjs/2.3.5/rx.all.min.js" async></script> | |
<script type="text/javascript"> | |
var _turnObjToArray = function(obj) { | |
return [].map.call(obj, function(element) { | |
return element; | |
}) | |
}; | |
var main = function main() { | |
var query_field = document.getElementById('query-field'); | |
var query_targets = _turnObjToArray(document.querySelectorAll('.query-target')); | |
var unhideAllTargets = function unhideAllTargets() { | |
query_targets.map(function(node) { node.classList.remove('hidden'); }); | |
}; | |
var hideTarget = function hideTarget(node) { node.classList.add('hidden'); }; | |
var query_field_observer = Rx.Observable.fromEvent(query_field, 'keyup'); | |
query_field_observer | |
.map(function(e) { return e.target.value; }) | |
.throttle(300) | |
.distinctUntilChanged() | |
.filter(function(txt) { | |
if (txt.length == 0) { unhideAllTargets(); } | |
return txt.length >= 2; | |
}) | |
.subscribe(function(txt) { | |
var matcher = new RegExp(".*" + txt + ".*"); | |
query_targets | |
.filter(function(node) { return ! node.textContent.match(matcher); }) | |
.map(hideTarget); | |
}); | |
}; | |
window.addEventListener('load', main); | |
</script> | |
</body> | |
</html> |
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