首页 > 解决方案 > 在 switch JS Google Chart 中使用输入值

问题描述

从我上一个问题Make 3D array in Javascript 开始,我尝试了另一种解决问题的方法。主要问题是从用户那里获取值,然后选择正确的二维数组,通过输入的日期值更改空值并将其显示在图表上。

我工作的解决方案是选择正确的带开关的二维数组:

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type = "text/javascript" src = "prototype.js"></script>
<script type="text/javascript">
    google.charts.load('current', {'packages':['corechart']});
    google.charts.setOnLoadCallback();
    function fixArray(){
        var array_0 = [['Day', 'research', 'Weight'], ['32', 1898, null], ['33', 2432, null], ['34', 2533, null], ['35', 2267, null],
                    ['36', 2649, null], ['37', 3018, null], ['38', 3264, null], ['39', 3460, null],
                    ['40', 3561, null], ['41', 3706, null], ['42', 3576 , null], ['43', 3465, null]];

        var array_1 = [['Day', 'research', 'Weight'], ['32', 1405, null], ['33', 1779, null], ['34', 2158, null], ['35', 2272, null],
                    ['36', 2493, null], ['37', 2783, null], ['38', 2984, null], ['39', 3185, null],
                    ['40', 3310, null], ['41', 3426, null], ['42', 3531, null], ['43', 3784, null]];
            .
            .
            .

        var array_10 = [['Day', 'research', 'Weight'], ['32', 2605 ,null], ['33', 3402, null], ['34', 3500, null], ['35', 3705, null],
                         ['36', 3810, null], ['37', 3856, null], ['38', 3955, null], ['39', 4120, null],
                         ['40', 4260, null], ['41', 4100, null], ['42', 4000 ,null], ['43', 3900, null]];

        var fixed = new Array(12);  // defining empty 2D array to the fixed array that will be show
        for (var i = 0; i < fixed.length; i++) 
          fixed[i] = []; 
        var number = $('number').getValue();        
        var day = document.getElementById("day");
        var weight = $('weight').getValue();
        switch (number) {
            case 0:
                for(i=1; i<=12; i++){
                    if(array_0[i][0] == day)
                        array_0[i][2] = weight;
                }
                fixed = array_0;
                break;

            case 1:
                for(i=1; i<=12; i++){
                    if(array_1[i][0] == day)
                        array_1[i][2] = weight;
                }
                fixed = array_1;
                break;
          .
          .
          .
            case 10:
                for(i=1; i<=12; i++){
                    if(array_10[i][0] == day)
                        array_10[i][2] = weight;
                }
                fixed = array_10;
                break;

            default:
                alert("Not Enough Data");
                break;
        }
        drawVisualization(fixed);
    }   
    function drawVisualization(fixed) {
        var data = google.visualization.arrayToDataTable(Array.from(fixed));
        var options = {
            title : 'Results',
            vAxis: {title: 'Weight'},
            hAxis: {title: 'Day'},
            seriesType: 'line',
            series: {1: {type: 'scatter'}}
        };

        var chart = new google.visualization.ComboChart(document.getElementById('chart_div'));
        chart.draw(data, options);
    }    

</script>

当我尝试运行该页面时,无论我输入的数值是什么,浏览器都会向我显示默认警报。

我的html代码:

<form onsubmit="fixArray()">
        <table>
            <tr>
                <td>Number:</td>
                <td><input id="number" name="number" type="number"></td>
            </tr>
            <tr>
                <td>Day:</td>
                <td><input id="day" name="day" type="text"></td>
            </tr>
            <tr>
                <td>Weight:</td>
                <td><input id="weight" name="weight" type="text"></td>
            </tr>
            <tr>
                <td>
                    <input name="Submit1" type="submit" value="Send" style="width: 80px; height: 35px"></td>
                <td>
                    <input name="Reset1" type="reset" value="Reset" style="width: 80px; height: 35px"></td>
            </tr>

        </table>
    </form>
    <div id="chart_div" style="width: 900px; height: 500px"></div>

我遇到的另一个问题是,当我尝试使用drawVisualization(array_0)代码而不是修复检查时,页面再次向我显示默认情况的警报。(并且“给定轴上的所有系列必须具有相同的数据类型×”错误显示在图表 div 中)。

我究竟做错了什么?

标签: javascripthtmlchartsswitch-statementgoogle-visualization

解决方案


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