Created
September 19, 2014 07:42
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fixbug: touchend doesn't fire on mobile devices
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>touchend doesn't fire on mobile devices</title> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" /> | |
<style> | |
body { | |
background-color: #eee; | |
} | |
.headline { | |
font-size: 1.5em; | |
} | |
.headline small { | |
display: block; | |
} | |
.touchme { | |
height: 180px; | |
line-height: 180px; | |
margin-bottom: 10px; | |
background-color: #4E9197; | |
text-align: center; | |
font-size: 3em; | |
-webkit-user-select: none; | |
box-shadow: 0 2px 5px #aaa; | |
border-radius: 5px; | |
} | |
.textarea-log { | |
width: 100%; | |
} | |
.author { | |
border-top: 1px dashed #aaa; | |
padding-top: 10px; | |
text-align: right; | |
color: #999; | |
font-size: small; | |
} | |
blockquote a { | |
display: block; | |
} | |
</style> | |
</head> | |
<body> | |
<h1 class="headline">FIXBUG: touchend doesn't fire <small>on mobile devices</small></h1> | |
<div class="touchme">touch me</div> | |
<textarea class="textarea-log" cols="30" rows="10"></textarea> | |
<input type="checkbox" id="js-fixtouch"><label for="js-fixtouch">fix touch event problem</label> | |
<p class="author">2014-9-19 Sun</p> | |
<ul> | |
<li><a href="http://code.google.com/p/android/issues/detail?id=19827">WebView touchevents are not fired propperly if e.preventDefault() is not used on touchstart and touchmove</a></li> | |
<li><a href="http://blog.mobiscroll.com/working-with-touch-events/">Working with touch events</a></li> | |
</ul> | |
<script> | |
var touchEl = document.querySelector('.touchme'); | |
var logEl = document.querySelector('.textarea-log'); | |
var fixtouchEl = document.querySelector('#js-fixtouch'); | |
function logEvent(type) { | |
logEl.innerHTML = logEl.innerHTML + '\n' + new Date().toLocaleTimeString() + ' - ' + type; | |
logEl.scrollTop = logEl.scrollHeight; | |
} | |
touchEl.addEventListener('touchstart', function(event) { | |
logEvent('[touchstart]'); | |
// 在touchstart中阻止事件的默认行为即可修复touchmove和touchend事件不触发的问题 | |
if (fixtouchEl.checked) { | |
event.preventDefault(); | |
} | |
}, false); | |
touchEl.addEventListener('touchmove', function(event) { | |
logEvent('touchmove'); | |
}, false); | |
touchEl.addEventListener('touchend', function(event) { | |
logEvent('[touchend]'); | |
}, false); | |
</script> | |
</body> | |
</html> |
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demo中的 event.preventDefault() 更适合添加在 touchmove 事件中。