如何改变javascript值从文本框

how to change javascript value from textboxes

本文关键字：文本 javascript 何改变 改变      更新时间：2023-09-26

我有两页1)数据2)饼状图。
在数据页我有5个文本框和一个按钮。

我想改变以下值从文本框值后点击按钮

['Work',     11],
['Eat',      2],
['Commute',  2],
['Watch TV', 2],
['Sleep',    7]

怎么做??

下面是我的代码: 
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
  google.load("visualization", "1", {packages:["corechart"]});
  google.setOnLoadCallback(drawChart);
  function drawChart() {
    var data = google.visualization.arrayToDataTable([
      ['Task', 'Hours per Day'],
      ['Work',     11],
      ['Eat',      2],
      ['Commute',  2],
      ['Watch TV', 2],
      ['Sleep',    7]
    ]);
    var options = {
      title: 'My Daily Activities'
    };
    var chart = new google.visualization.PieChart(document.getElementById('piechart'));
    chart.draw(data, options);
  }
</script>
</head>
<body>
<div id="piechart" style="width: 900px; height: 500px;"></div>
</body>

您可以重用drawChart()代码并在click或onsubmit等事件中使用它(可能在加载时也可以动态加载)

** 注意，您可以使用Ajax或仅从html inputs中获取一些值来重新绘制饼状图

下面我已经演示了如何实现它，你需要根据你的需要修改它。

google.load("visualization", "1", {
  packages: ["corechart"]
});
google.setOnLoadCallback(drawChart);
function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Task', 'Hours per Day'],
    ['Work', 11],
    ['Eat', 2],
    ['Commute', 2],
    ['Watch TV', 2],
    ['Sleep', 7]
  ]);
  var options = {
    title: 'My Daily Activities'
  };
  var chart = new google.visualization.PieChart(document.getElementById('piechart'));
  chart.draw(data, options);
}
$(function() {
  $('#ctc').on('click', function() {
    var data = google.visualization.arrayToDataTable([
      ['Task', 'Hours per Day'],
      ['Work', 20],
      ['Eat', 12],
      ['Commute', 12],
      ['Watch TV', 2],
      ['Sleep', 7]
    ]);
    var options = {
      title: 'My Daily Activities - Now changed on click !!'
    };
    var chart = new google.visualization.PieChart(document.getElementById('piechart'));
    chart.draw(data, options);
  });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<h2 id='ctc'>Click me</h2>
<div id="piechart" style="width: 900px; height: 500px;"></div>

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