pinch
Source
Output
QRCode
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-touch-fullscreen" content="yes">
<style type="text/css">
body{
background: #fff;
}
</style>
<script src="//g.alicdn.com/kissy/k/5.0.1/seed.js" data-config="{combine:true}"></script>
</head>
<body>
<h1>open in ios safari test pinch event</h1>
<div id='t' tabindex='0'
style='border:1px solid green;
width:200px;height:200px;margin:100px'>
pinch me
</div>
<script>
require(['event-dom', 'event-dom/gesture/pinch'], function (DomEvent, GesturePinch) {
DomEvent.on('#t',"pinch pinchStart pinchEnd", function (e) {
console.log(e.type + ' : ' + e.scale);
});
var o;
var t = document.getElementById('t');
DomEvent.on('#t', 'pinchStart', function () {
o = 1;
if (t.style.webkitTransform) {
o = parseFloat(t.style.webkitTransform.replace(/scale\(/, ''));
}
});
DomEvent.on('#t', 'pinch', function (e) {
t.style.webkitTransform = 'scale(' + (o * e.scale) + ')';
});
});
</script>
</body>
</html>