javascript - kendo ui treelist - lock a column -


i trying create lock on column on treelist in kendo ui. if user clicks on button lock column in treelist, tried :

<!doctype html> <html> <head>     <base href="http://demos.telerik.com/kendo-ui/treelist/frozen-columns">     <style>html { font-size: 12px; font-family: arial, helvetica, sans-serif; }</style>     <title></title>     <link rel="stylesheet" href="http://cdn.kendostatic.com/2015.1.408/styles/kendo.common-material.min.css" />     <link rel="stylesheet" href="http://cdn.kendostatic.com/2015.1.408/styles/kendo.material.min.css" />     <link rel="stylesheet" href="http://cdn.kendostatic.com/2015.1.408/styles/kendo.dataviz.min.css" />     <link rel="stylesheet" href="http://cdn.kendostatic.com/2015.1.408/styles/kendo.dataviz.material.min.css" />      <script src="http://cdn.kendostatic.com/2015.1.408/js/jquery.min.js"></script>     <script src="http://cdn.kendostatic.com/2015.1.408/js/kendo.all.min.js"></script> </head> <body>   <button>click me</button>          <div id="example">             <div id="treelist"></div>              <script>                 $(document).ready(function () {                    $("button").click(function(){                             var treelist = $("#treelist").data("kendotreelist");                              treelist.lockcolumn("lastname");                   });                      var crudservicebaseurl = "http://demos.telerik.com/kendo-ui/service";                      var datasource = new kendo.data.treelistdatasource({                             transport: {                                 read: {                                     url: crudservicebaseurl + "/employeedirectory",                                     datatype: "jsonp"                                 }                             },                             schema: {                                 model: {                                     id: "employeeid",                                     fields: {                                         employeeid: { type: "number", nullable: false },                                         parentid: { field: "reportsto", nullable: true }                                     }                                 }                             }                         });                      $("#treelist").kendotreelist({                         datasource: datasource,                         reorderable: true,                         resizable: true,                         sortable: true,                         filterable: true,                         columnmenu: true,                         columns: [                             {                                 field: "firstname",                                 expandable: true,                                 title: "first name",                                    lockable: true,                                 width: 250                             },                             {                                 field: "lastname",                                 title: "last name",                                  lockable: true,                                 width: 200                             },                             {                                 field: "position",                                 width: 400,                                  lockable: true                             },                             {                                 field: "extension",                                 title: "ext",                                 format: "{0:#}",                                 width: 150,                              }                         ]                     });                 });             </script>              <style>                 #treelist {                     width: 950px;                 }             </style>         </div>    </body> </html>

lockcolumn function gives error on console , not producing lock on treelist : 

 typeerror: d undefined              kendo.all.min.js:53:29331

http://dojo.telerik.com/elipa

lockcolumn api : http://docs.telerik.com/kendo-ui/api/javascript/ui/treelist

telerik kendo uis treelist has limitation in column locking, @ least 1 column must locked in initialization phase programmatical column locking work per documentation: "in order use method, treelist must initialized @ least 1 locked column, , should have unlocked columns left after target column locked.", source http://docs.telerik.com/kendo-ui/api/javascript/ui/treelist#methods-lockcolumn.

see corrected dojo example here: http://dojo.telerik.com/@mrtaunus/iyegi.


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