javascript - How to populate koGrid Groups Array on initial load? -


how can populate kogrid groups array? last line of following code throwing error: 

gridoptions: {         data: ko.observablearray([{ name: 'john', title: 'abc', age: 29, salary: 35000, company: "oati" }, { name: 'peter', title: 'xyz', age: 35, salary: 70000, company: "infogain" }]),         multiselect: true,         showgrouppanel: true,         showcolumnmenu: false,         showfilter: false,         columnschanged: this.columnschanged,         maintaincolumnratios: true,         enablepaging: true,         pagingoptions: this.pagingoptions,         hidechildren: false,         footervisible: false,      displayselectioncheckbox: false,     columnwidth: 1000,     columndefs: ko.observablearray([                                     { field: '_sortindex', visible: false, displayname: "random sort", sortdirection: "asc" },                                     { field: 'name', visible: true, displayname: "name", selectable: true, groupindex: 1, width: 150 },                                     { field: 'title', visible: true, displayname: "title", width: 150 },                                     { field: 'age', visible: true, displayname: "age", width: 150 },                                     { field: 'salary', visible: true, displayname: "salary", agg: "sum", width: 150 },                                     { field: 'company', visible: true, displayname: "company", width: '**' }     ]),     groups: ['company'] // code throwing error. without line working fine.  }

can explain wrong?


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