jQWidgets jqxGrid exportdata()方法

jQWidgets jqxGrid exportdata()方法

jQWidgets是一个JavaScript框架,用于为PC和移动设备制作基于Web的应用程序。它是一个非常强大的,优化的,与平台无关的,并且被广泛支持的框架。jqxGrid被用来说明一个jQuery widget,它以表格形式显示数据。此外,它完全支持与数据的连接,以及分页、分组、排序、过滤和编辑。

exportdata()方法用于将显示的jqxGrid内加载的每一行导出为XLS、XML、CSV、TSV、HTML或JSON。它不会返回任何东西。

注意:为了将数据导出为PDF,需要有一个支持HTML5的浏览器。

语法:

$('Selector').jqxGrid('exportdata', "xml", "jqxGrid");

参数:

  • dataType。这是声明的出口类型。可能的值是’xls’, ‘XML’, ‘html’, ‘JSON’, ‘pdf’, ‘tsv’ 或 ‘CSV’。它的类型是字符串。
  • fileName。它是文件的名称。如果文件名没有给出,那么显示的jqxGrid必须将加载的数据导出到一个本地变量中。它的类型是String。
  • exportHeader。这是一个可选的参数,有助于指定是否导出列的标题。然而,列头在默认情况下是由导出器导出的。它的类型是布尔值。
  • rows。这是要导出的行的声明数组。然而,默认情况下,每一行都会被导出。为了导出每一行,这个参数的值必须被设置为空。它是一个可选参数,类型为数组。
  • exportHiddenColumns。它有助于指定隐藏的列是否被导出。此外,默认情况下,导出器不会导出隐藏的列。它是一个可选的参数,类型为布尔型。
  • serverURL。它有助于指定导出服务器的URL。出口器是通过jQWidgets的服务器呈现的。它的类型是字符串。
  • charSet。它指定了字符集。它是一个可选的参数,其类型为String。

链接的文件:从给出的链接中下载jQWidgets。在HTML文件中,找到下载文件夹中的脚本文件。

<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/jqx-all.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdata.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxbuttons.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxscrollbar.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxmenu.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxgrid.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxgrid.selection.js”></script>

例子1:下面的例子说明了jQWidgets中jqxGrid exportdata()方法。

<!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/jqxdata.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxbuttons.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxscrollbar.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxmenu.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxgrid.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxgrid.selection.js">
    </script>
      <script type="text/javascript" 
            src="jqwidgets/jqxgrid.columnsresize.js">
    </script>
</head>
  
<body>
    <center>
        <h1 style="color: green">
            GeeksforGeeks
        </h1>        
        <h3>
              jQWidgets jqxGrid exportdata() 
            method
        </h3><br />      
        <div id="jqxg"></div>       
        <div>
            <input type="button" 
                   id="jqxBtn" 
                   style="margin-top: 25px" 
                   value="Click here" />
        </div>        
        <div id="log"></div>      
    </center>
  
    <script type="text/javascript">
        (document).ready(function () {
            var d = new Array();
            var subjectNames =
                ["C++", "Scala", "Java", "C", "R", "JavaScript"];
  
            var pageNumber =
                ["7", "8", "12", "11", "10", "19"];
  
            for (var j = 0; j<50; j++) {
                var r = {};
                r["subjectnames"] =
                    subjectNames[Math.floor(
                        Math.random() * subjectNames.length)
                    ];
  
                r["pagenumber"] =
                    pageNumber[Math.floor(
                        Math.random() * pageNumber.length)
                    ];
                d[j] = r;
  
            }
            var src = {
                localdata: d,
                datatype: "array",
            };
            var data_Adapter = new.jqx.dataAdapter(src);
            ("#jqxg").jqxGrid({
                source: data_Adapter,
                theme: 'energyblue',
                height: "210px",
                width: "240px",
                columns: [
                    {
                        text: "Subject Name",
                        datafield: "subjectnames",
                        width: "120px",
                    },
                    {
                        text: "Page No.",
                        datafield: "pagenumber",
                        width: "120px",
                    },
                ],
            });
  
            ("#jqxBtn").jqxButton({
                width: "180px",
                height: "30px",
            });
            ("#jqxBtn").on("click", function () {
                ('#jqxg').jqxGrid('exportdata', "json", "jqxGrid");
                $("#log").text("Data exported to json!");
            });
        });
    </script>
</body>
  
</html>

输出:

jQWidgets jqxGrid exportdata()方法

例子2:下面是另一个例子,说明了jQWidgets中jqxGrid exportdata()方法。

<!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/jqxdata.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxbuttons.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxscrollbar.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxmenu.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxgrid.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxgrid.selection.js">
    </script>
      <script type="text/javascript" 
            src="jqwidgets/jqxgrid.columnsresize.js">
    </script>
</head>
  
<body>
    <center>
        <h1 style="color: green">
            GeeksforGeeks
        </h1>        
        <h3>
              jQWidgets jqxGrid exportdata() 
            method
        </h3><br />      
        <div id="jqxg"></div>       
        <div>
            <input type="button" 
                   id="jqxBtn" 
                   style="margin-top: 25px" 
                   value="Click here" />
        </div>        
        <div id="log"></div>      
    </center>
  
    <script type="text/javascript">
        (document).ready(function () {
            var d = new Array();
            var subjectNames =
                ["C++", "Scala", "Java", "C", "R", "JavaScript"];
  
            var pageNumber =
                ["7", "8", "12", "11", "10", "19"];
  
            for (var j = 0; j<50; j++) {
                var r = {};
                r["subjectnames"] =
                    subjectNames[Math.floor(
                        Math.random() * subjectNames.length)
                    ];
  
                r["pagenumber"] =
                    pageNumber[Math.floor(
                        Math.random() * pageNumber.length)
                    ];
                d[j] = r;
  
            }
            var src = {
                localdata: d,
                datatype: "array",
            };
            var data_Adapter = new.jqx.dataAdapter(src);
            ("#jqxg").jqxGrid({
                source: data_Adapter,
                theme: 'energyblue',
                height: "210px",
                width: "240px",
                columns: [
                    {
                        text: "Subject Name",
                        datafield: "subjectnames",
                        width: "120px",
                    },
                    {
                        text: "Page No.",
                        datafield: "pagenumber",
                        width: "120px",
                    },
                ],
            });
  
            ("#jqxBtn").jqxButton({
                width: "180px",
                height: "30px",
            });
            ("#jqxBtn").on("click", function () {
                var ed =('#jqxg').jqxGrid('exportdata', "html");
                if (ed === null) {
                    ('#log').text("Data not exported!");
                }
                else {
                    ('#log').text("Data exported!");
                }
            });
        });
    </script>
</body>
  
</html>

输出:

jQWidgets jqxGrid exportdata()方法

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