我想知道为什么当我将它绑定到更改事件时图表没有重绘，如果是这样我怎么能为此进行回调？这是我的jsfiddle：http://jsfiddle.net/a_miguel6687/aL73X/13/。我想要发生的是，当我点击一个新的单选按钮时，输入值会改变，这似乎是这种情况，但图表不会被重新绘制。
function drawChart() {
var sample_data = document.getElementById('sample_data').value;
var data2 = eval("["+sample_data+"]");
var data = new google.visualization.DataTable();
data.addColumn('number', 'Age');
data.addColumn('number', 'Savings');
data.addRows(data2);
var options = {
hAxis: {title: 'Age', minValue: 0,maxValue:105},
vAxis: {title:'Savings',minValue:0,maxValue:2500000, format:'\u00A4 ,##0.00'},
width: 960, height: 300,
colors: ['#4a82bd'],
legend:'none',
tooltip: {isHtml: true}
};
var formatter = new google.visualization.NumberFormat(
{prefix: '$'});
formatter.format(data, 1); // Apply formatter to second column
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {
type: 'string',
role: 'tooltip',
calc: function (dt, row) {
// create a simple HTML tooltip
var age = dt.getFormattedValue(row, 0);
var savings = dt.getFormattedValue(row, 1);
return "Age:\t"+age+
"\nSavings:\t"+savings;
}
}]);
var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
chart.draw(view,options);
}
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function buffer(){
setTimeout(function () {drawChart();}, 100);
}
function ViewModel() {
var self =this;
self.rangeSelect = ko.observable("0%");
self.dataGetter = ko.computed(function(){
var range = self.rangeSelect();
if(range=='0%'){
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}
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}
if(range=='60%'){
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;
}
if(range=='70%'){
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}
});
self.boxData = ko.computed(function(){
var range = self.rangeSelect();
if(range=='0%'){
return '[71,74,77,82,100,74]';
}
if(range=='30%'){
return '[71,76,81,92,105,76]';
}
if(range=='40%'){
return '[71,76,83,99,105,76]';
}
if(range=='50%'){
return '[71,76,84,105,105,76]'
}
if(range=='60%'){
return '[71,77,87,105,105,77]'
}
if(range=='70%'){
return '[71,77,89,105,105,77]';
}
});
}
//Activate knockout.js
ko.applyBindings(new ViewModel());
$(document).ready(function(){
var rawdata = document.getElementById('boxdata').value;
var boxdata = eval(rawdata);
$("#sparkline").sparkline(boxdata, {
type: 'box',
width: '420px',
height: '58px',
raw: true,
showOutliers: false,
boxLineColor: '#ccc',
boxFillColor: '#4a82bd',
whiskerColor: '#ccc',
medianColor: '#ccc'});
$("input[name='range']").change(function(){
$("#sparkline").sparkline(boxdata, {
type: 'box',
width: '420px',
height: '58px',
raw: true,
showOutliers: false,
boxLineColor: '#ccc',
boxFillColor: '#4a82bd',
whiskerColor: '#ccc',
medianColor: '#ccc'});
$.sparkline_display_visible();
buffer();
});
})