【highstock】按时间（zoom）让它去访问服务器呢？

$(function () {
/**
* Load new data depending on the selected min and max
*/
function afterSetExtremes(e) {
var chart = $('#container').highcharts();
chart.showLoading('Loading data from server...');
$.getJSON('http://www.highcharts.com/samples/data/from-sql.php?start=' + Math.round(e.min) +
'&end=' + Math.round(e.max) + '&callback=?', function (data) {
chart.series[0].setData(data);
chart.hideLoading();
});
}
// See source code from the JSONP handler at https://github.com/highslide-software/highcharts.com/blob/master/samples/data/from-sql.php
$.getJSON('http://www.highcharts.com/samples/data/from-sql.php?callback=?', function (data) {
// Add a null value for the end date
data = [].concat(data, [[Date.UTC(2011, 9, 14, 19, 59), null, null, null, null]]);
// create the chart
$('#container').highcharts('StockChart', {
chart : {
type: 'candlestick',
zoomType: 'x'
},
navigator : {
adaptToUpdatedData: false,
series : {
data : data
}
},
scrollbar: {
liveRedraw: false
},
title: {
text: 'AAPL history by the minute from 1998 to 2011'
},
subtitle: {
text: 'Displaying 1.7 million data points in Highcharts Stock by async server loading'
},
rangeSelector : {
buttons: [{
type: 'hour',
count: 1,
text: '1h'
}, {
type: 'day',
count: 1,
text: '1d'
}, {
type: 'month',
count: 1,
text: '1m'
}, {
type: 'year',
count: 1,
text: '1y'
}, {
type: 'all',
text: 'All'
}],
inputEnabled: false, // it supports only days
selected : 4 // all
},
xAxis : {
events : {
afterSetExtremes : afterSetExtremes
},
minRange: 3600 * 1000 // one hour
},
yAxis: {
floor: 0
},
series : [{
data : data,
dataGrouping: {
enabled: false
}
}]
});
});
});