let grid = new w2grid({

    name: 'grid',

    show: {

        lineNumbers: true

    },

    lineNumberWidth: 50,

    columns : [

        { field: 'recid', text: 'ID', size: '50px' },

        { field: 'lname', text: 'Last Name', size: '30%' },

        { field: 'fname', text: 'First Name', size: '30%' },

        { field: 'email', text: 'Email', size: '40%' },

        { field: 'sdate', text: 'Start Date', size: '120px' },

        { field: 'sdate', text: 'End Date', size: '120px' }

    ]

});

​

w2ui.grid.lineNumberWidth = 100;

w2ui.grid.refresh();

​