jQWidgets jqxDataTable clearFilters()方法

jQWidgets jqxDataTable clearFilters()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、被广泛支持的框架。jqxDataTable是用来读取和显示HTML表的数据的。这也被用来显示来自各种数据源的数据,如XML、JSON、Array、CSV或TSV。

clearFilters()方法是用来清除过滤器的。这个函数不接受任何参数。

语法:

$("#dataTable").jqxDataTable('clearFilters');

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.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/jqxlistbox.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdropdownlist.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdatatable.js”></script>

例子:下面的例子说明了jQWidgets的clearFilters()方法。在这个例子中,已经有一个应用的过滤器要用clearFilters()方法来删除。

<!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.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/jqxlistbox.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxdropdownlist.js">
    </script>
    <script type="text/javascript" 
            src="jqwidgets/jqxdatatable.js">
    </script>
    <script>
        (document).ready(function () {
            var data = new Array();
            var Employee_Name = [
                "Ravi", "Sumit", "Amit", "Aakash"];
            var Company = [
                "GeeksforGeeks", "Amazon", "Google",
                "GeeksforGeeks"];
            var Designation = [
                "Content Writer", "Software Engineer",
                "Data Scientist", "HR"];
  
            for (var i = 0; i<4; i++) {
                var row = {};
                row["Employee_Name"] = Employee_Name[i];
                row["Company"] = Company[i];
                row["Designation"] = Designation[i]
                data[i] = row;
            }
  
            var source = {
                localData: data,
                dataType: "array",
                dataFields: [{
                    name: 'Employee_Name',
                    type: 'string'
                }, {
                    name: 'Company',
                    type: 'string'
                }, {
                    name: 'Designation',
                    type: 'string'
                }]
            };
  
            var dataAdapter = new
             .jqx.dataAdapter(source);
            ("#table").jqxDataTable({
                width: 550,
                theme: 'energyblue',
                pageable: true,
                editable: true,
                source: dataAdapter,
                columns: [{
                    text: 'Employee_Name',
                    dataField: 'Employee_Name',
                    width: 200
                }, {
                    text: 'Company',
                    dataField: 'Company',
                    width: 160
                }, {
                    text: 'Designation',
                    dataField: 'Designation',
                    width: 190
                }]
            });
            ("#jqxbutton").jqxButton({
                theme: 'energyblue',
                width: 200,
                height: 30
            });
            var filtertype = 'stringfilter';
            var filtergroup = new .jqx.filter();
            var filter_or_operator = 1;
            var filtervalue = "GeeksforGeeks";
            var filtercondition = 'equal';
            var filter = filtergroup.createfilter
                (filtertype, filtervalue,
                 filtercondition);
            filtergroup.addfilter(filter_or_operator,
                                  filter);
            ("#table").jqxDataTable('addFilter', 
                               'Company', filtergroup);
            ("#table").jqxDataTable('applyFilters');
            ('#jqxbutton').click(function () {
                $("#table").jqxDataTable('clearFilters');
            });
        });
    </script>
</head>
  
<body>
    <center>
        <h1 style="color: green;"> 
          GeeksforGeeks 
        </h1>
        <h3> 
          jQWidgets jqxDataTable clearFilters() Method 
        </h3>
        <div id="table"></div>
        <input type="button" style="margin: 20px;" 
               id="jqxbutton" 
               value="Clear the filters" />
    </center>
</body>
  
</html>

输出:

jQWidgets jqxDataTable clearFilters()方法

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