jQWidgets jqxTreeGrid scrollOffset()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、優化、獨立於平台且得到廣泛支持的框架。 jqxTreeGrid 用於表示 tree-like 結構中的數據。該小部件對於顯示多列分層數據、數據分頁、排序和過濾、數據編輯、列大小調整、固定列、條件格式、聚合和行選擇非常有用。這些小部件還可以讀取和顯示來自任何類型數據源(例如 XML、JSON、Array、CSV 或 TSV)的數據。

scrollOffset()方法用於滾動到指定jqxTreeGrid的指定位置。

用法:

$("#treeGrid").jqxTreeGrid('scrollOffset', top, left);

參數：此方法接受兩個參數，如下所示：

top:這是指定的垂直滾動條值，滾動到該值為止。
left: 這是指定的水平滾動條值，滾動將達到該值

返回值：此方法返回所使用的頂部和左側參數的對象，即object.left和object.top。

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.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 type=”text/javascript” src=”jqwidgets/jqxtreegrid.js”></script>

例子：下麵的例子說明了jQWidgets jqxTreeGridscrollOffset()方法。在下麵的示例中，水平滾動執行到其值 30。

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.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 type="text/javascript" 
      src="jqwidgets/jqxtreegrid.js"></script> 
  </head> 
  
  <body> 
    <center> 
      <h1 style="color: green;"> 
        GeeksforGeeks 
      </h1> 
      <h3> 
        jQWidgets jqxTreeGrid scrollOffset() Method 
      </h3> 
      <div id="jqxTreeGrid" style="margin: 25px;"></div> 
      <input type="button" style="margin: 20px;" 
             id="button_for_scrollOffset"
             value="Invoke the scrollOffset() Method" /> 
      <script type="text/javascript"> 
        $(document).ready(function () { 
          var A = [ 
            { 
              ID: 1, 
              Employee_Name: "Amit", 
              Company: "GeeksforGeeks", 
              Designation: "Content Writer", 
              expanded: true, 
              A1: [ 
                { 
                  ID: 2, 
                  Employee_Name: "Sumit", 
                  Company: "Amazon", 
                  Designation: "Software Engineer", 
                }, 
                { 
                  ID: 3, 
                  Employee_Name: "Vivek", 
                  Company: "Apple", 
                  Designation: "Product Manager", 
                  expanded: true, 
                  A1: [ 
                    { 
                      ID: 4, 
                      Employee_Name: "Soni", 
                      Company: "Flipkart", 
                      Designation: "HR", 
                    }, 
                  ], 
                }, 
              ], 
            }, 
          ]; 
  
          var Data_Source = { 
            dataFields: [ 
              { 
                name: "ID", 
              }, 
              { 
                name: "Employee_Name", 
              }, 
              { 
                name: "Company", 
              }, 
              { 
                name: "Designation", 
              }, 
              { 
                name: "A1", 
                type: "array", 
              }, 
              { 
                name: "expanded", 
              }, 
            ], 
            hierarchy: { 
              root: "A1", 
            }, 
            id: "ID", 
            localData: A, 
          }; 
  
          var Data = new $.jqx.dataAdapter(Data_Source); 
  
          $("#jqxTreeGrid").jqxTreeGrid({ 
            width: 400, 
            source: Data, 
            sortable: true, 
            ready: function () { 
              $("#jqxTreeGrid").jqxTreeGrid("expandRow", "1"); 
            }, 
            ready: function () { 
              $("#jqxTreeGrid").jqxTreeGrid("expandRow", "3"); 
            }, 
            columns: [ 
              { 
                text: "Employee_Name", 
                align: "center", 
                dataField: "Employee_Name", 
                width: 140, 
              }, 
              { 
                text: "Company", 
                align: "center", 
                dataField: "Company", 
                width: 150, 
              }, 
              { 
                text: "Designation", 
                align: "center", 
                dataField: "Designation", 
                width: 150, 
              }, 
            ], 
          }); 
          $("#button_for_scrollOffset").jqxButton({ 
            width: 350, 
            height: 35, 
          }); 
          $("#button_for_scrollOffset").click(function () { 
            var Scroll_Value = $("#jqxTreeGrid") 
              .jqxTreeGrid("scrollOffset", 25, 30); 
          }); 
        }); 
      </script> 
    </center> 
  </body> 
</html>

輸出：

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

相關用法

注：本文由純淨天空篩選整理自Kanchan_Ray大神的英文原創作品 jQWidgets jqxTreeGrid scrollOffset() 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。