实现的时钟（time）
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$(function () {
/**
* Get the current time
*/
function getNow () {
var now = new Date();
return {
hours: now.getHours() + now.getMinutes() / 60,
minutes: now.getMinutes() * 12 / 60 + now.getSeconds() * 12 / 3600,
seconds: now.getSeconds() * 12 / 60
};
};
/**
* Pad numbers
*/
function pad(number, length) {
// Create an array of the remaining length +1 and join it with 0's
return new Array((length || 2) + 1 - String(number).length).join(0) + number;
}
var now = getNow();
// Create the chart
$('#container').highcharts({
chart: {
type: 'gauge',
plotBackgroundColor: null,
plotBackgroundImage: null,
plotBorderWidth: 0,
plotShadow: false,
height: 200
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credits: {
enabled: false
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title: {
text: ' '
},
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background: [{
// default background
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backgroundColor: Highcharts.svg ? {
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cy: -0.4,
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[0.5, 'rgba(255, 255, 255, 0.2)'],
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},
yAxis: {
labels: {
distance: -20
},
min: 0,
max: 12,
lineWidth: 0,
showFirstLabel: false,
minorTickInterval: 'auto',
minorTickWidth: 1,
minorTickLength: 5,
minorTickPosition: 'inside',
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tickPosition: 'inside',
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tickColor: '#666',
title: {
text: 'Powered by<br/>Highcharts',
style: {
color: '#BBB',
fontWeight: 'normal',
fontSize: '8px',
lineHeight: '10px'
},
y: 10
}
},
tooltip: {
formatter: function () {
return this.series.chart.tooltipText;
}
},
series: [{
data: [{
id: 'hour',
y: now.hours,
dial: {
radius: '60%',
baseWidth: 4,
baseLength: '95%',
rearLength: 0
}
}, {
id: 'minute',
y: now.minutes,
dial: {
baseLength: '95%',
rearLength: 0
}
}, {
id: 'second',
y: now.seconds,
dial: {
radius: '100%',
baseWidth: 1,
rearLength: '20%'
}
}],
animation: false,
dataLabels: {
enabled: false
}
}]
},
// Move
function (chart) {
setInterval(function () {
var hour = chart.get('hour'),
minute = chart.get('minute'),
second = chart.get('second'),
now = getNow(),
// run animation unless we're wrapping around from 59 to 0
animation = now.seconds == 0 ?
false :
{
easing: 'easeOutElastic'
};
// Cache the tooltip text
chart.tooltipText =
pad(Math.floor(now.hours), 2) + ':' +
pad(Math.floor(now.minutes * 5), 2) + ':' +
pad(now.seconds * 5, 2);
hour.update(now.hours, true, animation);
minute.update(now.minutes, true, animation);
second.update(now.seconds, true, animation);
}, 1000);
});
});
// Extend jQuery with some easing (copied from jQuery UI)
$.extend($.easing, {
easeOutElastic: function (x, t, b, c, d) {
var s=1.70158;var p=0;var a=c;
if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
if (a < Math.abs(c)) { a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
}
});
</script>
</head>
<body>
<div id="container" style="min-width:700px;height:400px"></div>
</body>
</html>
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