当用户从谷歌图表下拉列表中选择值时，我需要更改值
请检查代码，当用户选择主题值时我需要，然后我可以提醒消息或选择的值，
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>
Google Visualization API Sample
</title>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
google.load('visualization', '1.1', {
packages: ['controls']
});
</script>
<script type="text/javascript">
function drawVisualization() {
// Prepare the data
var jsonData = '{"cols":[{"label":"Subject","type":"string"},{"label":"pete","type":"number"},{"label":"john","type":"number"},{"label":"carl","type":"number"},{"label":"andrea","type":"number"}],"rows":[{"c":[{"v":"coolness"},{"v":4.4},{"v":4.3},{"v":3.1},{"v":4.3}]},{"c":[{"v":"sexyness"},{"v":4.2},{"v":3.8},{"v":3.6},{"v":4.8}]},{"c":[{"v":"toughness"},{"v":3.1},{"v":2.7},{"v":2.4},{"v":2.9}]},{"c":[{"v":"chillnes"},{"v":4.4},{"v":4.4},{"v":4.2},{"v":4.5}]},{"c":[{"v":"madness"},{"v":4.6},{"v":4.6},{"v":4},{"v":4.6}]},{"c":[{"v":"lochness"},{"v":3.9},{"v":3.7},{"v":2.9},{"v":3.9}]},{"c":[{"v":"extraness"},{"v":4.6},{"v":4.3},{"v":3.6},{"v":4.3}]}]}';
console.log(typeof(responseText));
console.log(jsonData);
var data = new google.visualization.DataTable(JSON.parse(jsonData));
var compPicker = new google.visualization.ControlWrapper({
'controlType': 'CategoryFilter',
'containerId': 'control2',
'options': {
'filterColumnLabel': 'Subject',
'ui': {
'labelStacking': 'vertical',
'allowTyping': false,
'allowMultiple': true
}
}
});
// Define a chart
var chart = new google.visualization.ChartWrapper({
'chartType': 'ColumnChart',
'containerId': 'chart1',
'options': {
'title': 'Competenties',
'width': '100%',
'height': 300,
'vAxis': {
viewWindow: {
max: 5,
min: 0
},
gridlines: {
color: '#CCC',
count: 6
}
},
bar: {
groupWidth: '80%'
},
colors: ["#FFC000", "#00b0f0", "#ff0000", "#92d050"]
}
});
// Define a table
var table = new google.visualization.ChartWrapper({
'chartType': 'Table',
'containerId': 'chart2',
'options': {
'width': '400px'
}
});
// Create a dashboard
var drawChart = new google.visualization.Dashboard(document.getElementById('dashboard')).bind([compPicker], [chart, table]);;
drawChart.draw(data);
}
google.setOnLoadCallback(drawVisualization);
</script>
</head>
<body style="font-family: Arial;border: 0 none;">
<div id="dashboard">
<table>
<tr style='vertical-align: top'>
<td>
<div id="control1"></div>
<div id="control2"></div>
<div id="control3"></div>
</td>
</tr>
<tr>
<td>
<div style="float: left;" id="chart1"></div>
<div style="float: left;" id="chart2"></div>
<div style="float: left;" id="chart3"></div>
</td>
</tr>
</table>
</div>
</body>
</html>
请帮帮我。
由于
答案 0 :(得分：0)
使用'statechange'事件侦听器确定何时选择值...
然后compPicker.getState().selectedValues获取数组中的选定值...
google.charts.load('current', {
callback: drawVisualization,
packages: ['controls', 'corechart', 'table']
});
function drawVisualization() {
var jsonData = '{"cols":[{"label":"Subject","type":"string"},{"label":"pete","type":"number"},{"label":"john","type":"number"},{"label":"carl","type":"number"},{"label":"andrea","type":"number"}],"rows":[{"c":[{"v":"coolness"},{"v":4.4},{"v":4.3},{"v":3.1},{"v":4.3}]},{"c":[{"v":"sexyness"},{"v":4.2},{"v":3.8},{"v":3.6},{"v":4.8}]},{"c":[{"v":"toughness"},{"v":3.1},{"v":2.7},{"v":2.4},{"v":2.9}]},{"c":[{"v":"chillnes"},{"v":4.4},{"v":4.4},{"v":4.2},{"v":4.5}]},{"c":[{"v":"madness"},{"v":4.6},{"v":4.6},{"v":4},{"v":4.6}]},{"c":[{"v":"lochness"},{"v":3.9},{"v":3.7},{"v":2.9},{"v":3.9}]},{"c":[{"v":"extraness"},{"v":4.6},{"v":4.3},{"v":3.6},{"v":4.3}]}]}';
var data = new google.visualization.DataTable(JSON.parse(jsonData));
var compPicker = new google.visualization.ControlWrapper({
'controlType': 'CategoryFilter',
'containerId': 'control2',
'options': {
'filterColumnLabel': 'Subject',
'ui': {
'labelStacking': 'vertical',
'allowTyping': false,
'allowMultiple': true
}
}
});
// listen for 'statechange' event on ControlWrapper
google.visualization.events.addListener(compPicker, 'statechange', function () {
// log selected values array
document.getElementById('message').innerHTML += JSON.stringify(compPicker.getState().selectedValues) + '<br/>';
});
var chart = new google.visualization.ChartWrapper({
'chartType': 'ColumnChart',
'containerId': 'chart1',
'options': {'title':'Competenties',
'width':'100%',
'height':300,
'vAxis': {
viewWindow: {max:5,min:0},
gridlines: {color:'#CCC', count: 6}
},
bar: { groupWidth: '80%' },
colors: ["#FFC000","#00b0f0","#ff0000","#92d050"]
}
});
var table = new google.visualization.ChartWrapper({
'chartType': 'Table',
'containerId': 'chart2',
'options': {
'width': '400px'
}
});
var drawChart = new google.visualization.Dashboard(document.getElementById('dashboard'));
drawChart.bind([compPicker], [chart, table]);
drawChart.draw(data);
}<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="dashboard">
<table>
<tr style='vertical-align: top'>
<td>
<div id="control1"></div>
<div id="control2"></div>
<div id="control3"></div>
</td>
</tr>
<tr>
<td>
<div style="float: left;" id="chart1"></div>
<div style="float: left;" id="chart2"></div>
<div style="float: left;" id="chart3"></div>
</td>
</tr>
</table>
</div>
<div id="message"></div>