jQWidgets jqxGrid deferreddatafields属性

jQWidgets jqxGrid deferreddatafields属性

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用来说明一个jQuery widget,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。

deferreddatafields属性用于指定在工具提示中所述的单元格的值,只要’scrollmode‘属性的值被设置为 “deferred”,该工具提示就会在滚动条附近显示。它是数组类型,其默认值是”[]”。

语法:

  • 设置deferreddatafields属性。
$('Selector').jqxGrid({ 
    deferreddatafields: ['subjectnames', 'pagenumber'] 
});
  • 返回deferreddatafields属性。
var deferreddatafields = $('Selector').jqxGrid('deferreddatafields');

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jqxGrid deferreddatafields 属性在jQWidgets中的作用。

<!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 deferreddatafields property
          </h3>
        <br/>
        <div id="jqxg"></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',
                scrollmode: 'deferred',
                deferreddatafields: ['subjectnames', 'pagenumber'],
                height: "200px",
                width: "240px",
                columns: [
                    {
                        text: "Subject Name",
                        datafield: "subjectnames",
                        width: "120px",
                    },
                    {
                        text: "Page No.",
                        datafield: "pagenumber",
                        width: "120px",
                    },
                ],
            });
        });
    </script>
</body>
</html>

输出:

jQWidgets jqxGrid deferreddatafields属性

例子2:下面是网格deferreddatafields 属性的另一个例子。

<!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 deferreddatafields property
          </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',
                sortable: true,
                scrollmode: 'deferred',
                deferreddatafields: ['subjectnames'],
                height: "220px",
                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 ddf =('#jqxg').jqxGrid('deferreddatafields');
                if (ddf == "pagenumber") {
                    ('#log').text(ddf);
                }
                else {
                    ('#log').text("Not a deferred datafield!");
                }
            });
        });
    </script>
</body>
</html>

输出:

jQWidgets jqxGrid deferreddatafields属性

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