<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
var a,b,c;
var n1,n2,n3,n4;
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function Ran(){
n1 = 0;
n2 = 0;
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n4 = 0;
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var minNum = 0;
n1 = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;
n2 = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;
n3 = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;
n4 = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;
drawChart();
}
function add() {
a=0;
b=0;
c=0;
var radio1 = document.getElementsByName("v1");
var radio2 = document.getElementsByName("v2");
var radio3 = document.getElementsByName("v3");
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drawChart();
}
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Task', 'Hours per Day'],
['選項A', n1],
['選項B', n2],
['選項C', n3],
['選項D', n4],
]);
var options = {
title: 'My Daily Activities'
};
var chart = new google.visualization.PieChart(document.getElementById('piechart'));
chart.draw(data, options);
}
</script>
</head>
<body>
<h1>第一題？</h1>
<input name="v1" type="radio" value="A">A
<input name="v1" type="radio" value="B">B
<input name="v1" type="radio" value="C">C
<br>
<h1>第二題？</h1>
<input name="v2" type="radio" value="A">A
<input name="v2" type="radio" value="B">B
<input name="v2" type="radio" value="C">C
<br>
<h1>第三題？</h1>
<input name="v3" type="radio" value="A">A
<input name="v3" type="radio" value="B">B
<input name="v3" type="radio" value="C">C
<br>
Section1:
<input type="text" name="FirstName" id="c1" <br><br/>
Section2:
<input type="text" name="address" id="c2" <br></br>
Section3:
<input type="text" name="address" id="c3" <br></br>
<input type="button" value="submit" onclick="add()"/>
<input type="button" value="Randon" onclick="Ran()"/>
<div id="piechart" style="width: 900px; height: 500px;"></div>
</body>
</html>
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