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jQWidgets jqxChart getXAxisValue()用法及代碼示例


jQWidgets是一個 JavaScript 框架，用於為 PC 和移動設備製作基於 Web 的應用程序。它是一個非常強大且優化的框架，獨立於平台，並且得到廣泛支持。jqx圖表是一個輕量級且函數強大的圖表小部件，100% 用 JavaScript 編寫。它提供許多高級函數並支持三種不同的渲染技術 - SVG、HTML5 Canvas 和 VML。

getXAxisValue()方法用於返回x軸的值。它返回一個數字。

用法:

var gxav = chartInstance.getXAxisValue(offset, groupIndex);

參數：

  • offset:它是 x 軸的指定偏移量。它是數字類型。
  • groupIndex:它是組的指定索引。它是數字類型。

鏈接文件：下載jQWidgets從給定的鏈接。在 HTML 文件中，找到下載文件夾中的腳本文件。

<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<script type=”text/javascript” src=”scripts/jquery-1.11.1.min.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxchart.core.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdraw.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdata.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxchart.api.js”></script>

示例 1：下麵的示例說明了 jQWidgets jqxChartgetXAxisValue()方法。

HTML


<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <link rel="stylesheet"
        href="jqwidgets/styles/jqx.base.css"
        type="text/css" /> 
    <script type="text/javascript"
            src="scripts/jquery-1.11.1.min.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxcore.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxchart.core.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxdraw.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxdata.js"> 
    </script> 
  <script type="text/javascript"
            src="jqwidgets/jqxchart.api.js"> 
    </script> 
</head> 
  
<body> 
    <center> 
        <h1 style="color: green"> 
            GeeksforGeeks 
        </h1> 
  
        <h3>jQWidgets jqxChart getXAxisValue() method</h3> 
  
        <div id='gfg1' style="width:400px; height: 200px" /> 
    </center> 
    <center> 
        <input type="button" 
               id="btn" 
               value="Click Here" 
               style="padding: 5px 14px; margin-top: 15px;"> 
        <br> 
        <div id="log"></div> 
    </center> 
  
    <script type="text/javascript"> 
        $(document).ready(function () { 
            var json = [ 
                { Day: 'Monday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Tuesday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Wednesday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Thursday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Friday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Saturday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Sunday', A: 3, B: 1, C: 2, D: 1 } 
            ]; 
  
            var obj = { 
                title: "Coding Score", 
                description: "Coding Questions Solved Daily", 
                showToolTips: true, 
                source: json, 
                categoryAxis: { 
                    dataField: 'Day', 
                    showGridLines: true 
                }, 
                seriesGroups: [{ 
                    type: 'column', 
                    columnsGapPercent: 30, 
                    seriesGapPercent: 0, 
                    valueAxis: { 
                        minValue: 0, 
                        maxValue: 10, 
                        unitInterval: 10, 
                        description: 'Questions Solved' 
                    }, 
                    series: [ 
                        { dataField: 'A', displayText: 'A' }, 
                        { dataField: 'B', displayText: 'B' }, 
                        { dataField: 'C', displayText: 'C' }, 
                        { dataField: 'D', displayText: 'D' } 
                    ] 
                }] 
            }; 
            $('#gfg1').jqxChart(obj); 
            $('#btn').click(function () { 
                var chartInstance = 
                    $('#gfg1').jqxChart('getInstance'); 
                var gxav = 
                    chartInstance.getXAxisValue(70, 0); 
                $('#log').text(gxav); 
            }); 
        }); 
    </script> 
</body> 
  
</html>

輸出：

示例 2：下麵是jqxChart的另一個例子getXAxisValue()jQWidgets 中的方法。

HTML


<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <link rel="stylesheet"
        href="jqwidgets/styles/jqx.base.css"
        type="text/css" /> 
    <script type="text/javascript"
            src="scripts/jquery-1.11.1.min.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxcore.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxchart.core.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxdraw.js"> 
    </script> 
    <script type="text/javascript"
            src="jqwidgets/jqxdata.js"> 
    </script> 
  <script type="text/javascript"
            src="jqwidgets/jqxchart.api.js"> 
    </script> 
</head> 
  
<body> 
    <center> 
        <h1 style="color: green"> 
            GeeksforGeeks 
        </h1> 
  
        <h3>jQWidgets jqxChart getXAxisValue() method</h3> 
  
        <div id='gfg1' style="width:400px; height: 200px" /> 
    </center> 
    <center> 
        <input type="button" 
               id="btn" 
               value="Click Here" 
               style="padding: 5px 14px; margin-top: 15px;"> 
        <br> 
        <div id="log"></div> 
    </center> 
  
    <script type="text/javascript"> 
        $(document).ready(function () { 
            var json = [ 
                { Day: 'Monday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Tuesday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Wednesday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Thursday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Friday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Saturday', A: 3, B: 1, C: 2, D: 1 }, 
                { Day: 'Sunday', A: 3, B: 1, C: 2, D: 1 } 
            ]; 
  
            var obj = { 
                title: "Coding Score", 
                description: "Coding Questions Solved Daily", 
                showToolTips: true, 
                source: json, 
                categoryAxis: { 
                    dataField: 'Day', 
                    showGridLines: true 
                }, 
                seriesGroups: [{ 
                    type: 'column', 
                    columnsGapPercent: 30, 
                    seriesGapPercent: 0, 
                    valueAxis: { 
                        minValue: 0, 
                        maxValue: 10, 
                        unitInterval: 10, 
                        description: 'Questions Solved' 
                    }, 
                    series: [ 
                        { dataField: 'A', displayText: 'A' }, 
                        { dataField: 'B', displayText: 'B' }, 
                        { dataField: 'C', displayText: 'C' }, 
                        { dataField: 'D', displayText: 'D' } 
                    ] 
                }] 
            }; 
            $('#gfg1').jqxChart(obj); 
            $('#btn').click(function () { 
                var chartInstance = 
                    $('#gfg1').jqxChart('getInstance'); 
                var gxav = 
                    chartInstance.getXAxisValue(0, 5); 
                if (gxav === null) { 
                    $('#log').text("Null!"); 
                } 
                else { 
                    $('#log').text("Not null!"); 
                } 
            }); 
        }); 
    </script> 
</body> 
  
</html>

輸出：

參考： https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxchart/jquery-chart-api.htm?search=



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注：本文由純淨天空篩選整理自nidhi1352singh大神的英文原創作品 jQWidgets jqxChart getXAxisValue() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。