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我试图将一个变量传递到谷歌图表但是当我这样做时图表停止显示，我的目标是每次我在输入字段中输入不同的数字时图表都会改变但我现在没有任何地方. 这就是我所拥有的，有人可以就我做错了什么提供一些指导吗？

Javascript

    <script type="text/javascript" src="https://www.google.com/jsapi"></script>

    <script type="text/javascript">
      google.load('visualization', '1', {packages: ['corechart']});
    </script>

    <script type="text/javascript">
         function numbers(){
            var work_field = document.forms['work_form']['work_n_field'].value;
            var work_div = document.getElementById('number-work');
            var numberschart = work_div.innerHTML = work_field;
            return false;
        };

        function drawVisualization() {
            // Create and populate the data table.
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'Task');
        data.addColumn('number', 'Hours per Day');
        data.addRows(5);
        data.setValue(0, 0, 'Work');
//Right here is where I pass my variable into the chart
        data.setValue(0, 1, numberschart);
//And I leave the rest here until I define more input field.
        data.setValue(1, 0, 'Eat');
        data.setValue(1, 1, 2);
        data.setValue(2, 0, 'Commute');
        data.setValue(2, 1, 2);

        // Create and draw the visualization.
        new google.visualization.PieChart(document.getElementById('visualization')).
            draw(data, {
            title:"Mortgage Rates",
            colors: ['#a4b12d', '#818e0a', '#5c6601', '#f0fd79', '#dbe864'],
            });
      }    
      google.setOnLoadCallback(drawVisualization);
    </script>

html

  <div id="visualization" style="width: 400px; height: 300px;"></div>
    <form name="work_form" onsubmit="return numbers()">
    <label id="n-work-label">Work</label><input name="work_n_field"/>
    <button name="submit" id="submit" value="submit" onclick="numbers()">Submit</button>
    </form>
    <div id="number-work"></div>
    </div>

非常感谢任何帮助，谢谢

我也将它添加到 js fiddle，但是当将图表添加到资源时，它似乎没有检测到它。http://jsfiddle.net/pkCCa/

4

2 回答 2

5

这对我有用：

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title>Example</title>
        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
        <script type="text/javascript">
                var numberschart = 10; //<- Initial value
                google.load('visualization', '1', {packages: ['corechart']});

                function numbers(){
                        var work_field = document.forms['work_form']['work_n_field'].value;
                        var work_div = document.getElementById('number-work');
                        numberschart = work_div.innerHTML = work_field;
                        drawVisualization();
                        return false;
                };

                function drawVisualization() {
                    // Create and populate the data table.
                    var data = new google.visualization.DataTable();
                    data.addColumn('string', 'Task');
                    data.addColumn('number', 'Hours per Day');
                    data.addRows(5);
                    data.setValue(0, 0, 'Work');
                    //data.setValue(0, 1, 11);
                    data.setValue(0, 1, parseInt(numberschart));//<- The value you get from input field is a string, Google API will throw an error
                    data.setValue(1, 0, 'Eat');
                    data.setValue(1, 1, 2);
                    data.setValue(2, 0, 'Commute');
                    data.setValue(2, 1, 2);

                    // Create and draw the visualization.
                    new google.visualization.PieChart(document.getElementById('visualization')).
                        draw(data, {
                            title:"Mortgage Rates",
                            colors: ['#a4b12d', '#818e0a', '#5c6601', '#f0fd79', '#dbe864'],
                            animation:{
                                duration:1000,
                                easing: 'out',
                            },
                            vAxis: {
                                minValue:0, 
                                maxValue:1000
                            },
                        });
                  }    
                google.setOnLoadCallback(drawVisualization);
        </script>
    </head>
    <body>
        <div id="visualization" style="width: 400px; height: 300px;"></div>
        <form name="work_form" onsubmit="return false">
            <label id="n-work-label">Work</label><input name="work_n_field"/>
            <button name="submit" id="submit" value="submit" onclick="numbers();return false;">Submit</button>
        </form>
        <div id="number-work"></div>
    </body>
</html>
于 2012-04-12T01:47:39.127 回答
0

试试这个：

http://jsfiddle.net/schawaska/pkCCa/2/

注意：它不适用于 jsfiddler，因为您使用的密钥没有为他们的域设置。试试你的环境，让我知道

于 2012-04-12T01:38:02.907 回答