slick.checkboxselectcolumn.js

function handleHeaderClick(e, args) {
    if (args.column.id == _options.columnId && $(e.target).is(":checkbox")) {
        // if editing, try to commit
        if (_grid.getEditorLock().isActive() && !_grid.getEditorLock().commitCurrentEdit()) {
            e.preventDefault();
            e.stopImmediatePropagation();
            return;
        }
        var isETargetChecked = $(e.target).is(":checked");
        if (isETargetChecked) {
            var rows = [];
            for (var i = 0; i < _grid.getDataLength(); i++) {
                rows.push(i);
            }
            _grid.setSelectedRows(rows);
            callCustonHeaderToggler(isETargetChecked);
        } else {
            _grid.setSelectedRows([]);
            callCustonHeaderToggler(isETargetChecked);
        }
        e.stopPropagation();
        e.stopImmediatePropagation();
    }
}