# Row Filtering (JavaScript Scheduler) | DayPilot Pro for JavaScript Sandbox

> You can filter the Scheduler rows using specified criteria in real time. This demo filters rows using the resource name. Read more about [row filtering](https://doc.daypilot.org/scheduler/row-filtering/).

## Links

- Canonical HTML: /sandbox/scheduler/rowfiltering.html
- Source HTML folder: /sandbox/scheduler/
- Catalog root: /sandbox/
- Catalog: /sandbox/llms.txt

## Source

### Inline demo script 1

```javascript
const dp = new DayPilot.Scheduler("dp", {
            rowFilterParentsAlwaysVisible: true,
            onRowFilter: (args) => {
                const query = args.filterParam.query;
                const hideEmpty = args.filterParam.hideEmpty;

                if (args.row.name.toUpperCase().indexOf(query.toUpperCase()) === -1) {
                    args.visible = false;
                } else if (hideEmpty && args.row.events.isEmpty()) {
                    args.visible = false;
                }

            },
            startDate: "2026-01-01",
            days: 365,
            scale: "Day",
            timeHeaders: [
                {groupBy: "Month", format: "MMM yyyy"},
                {groupBy: "Cell", format: "d"}
            ],
            treeEnabled: true,
            onTimeRangeSelected: async (args) => {
                const modal = await DayPilot.Modal.prompt("New event name:", "Event");
                dp.clearSelection();
                if (modal.canceled) return;
                dp.events.add({
                    start: args.start,
                    end: args.end,
                    id: DayPilot.guid(),
                    resource: args.resource,
                    text: modal.result
                });
                dp.message("Created");
            },
            resources: [
                {
                    name: "Top 1",
                    id: "top1",
                    frozen: "top"
                },
                {
                    name: "Top 2",
                    id: "top2",
                    frozen: "top"
                },
                {
                    name: "Bottom 1",
                    id: "bottom1",
                    frozen: "bottom"
                },
                {
                    name: "Bottom 2",
                    id: "bottom2",
                    frozen: "bottom"
                },
                {
                    name: "Group 1", id: "G1", expanded: true, children: [
                        {name: "Resource 1", id: "R1"},
                        {name: "Resource 2", id: "R2"},
                    ]
                },
                {
                    name: "Group 2", id: "G2", expanded: true, children: [
                        {name: "Resource 3", id: "R3"},
                        {name: "Resource 4", id: "R4"},
                    ]
                },
            ],
            events: [
                {
                    start: "2026-01-05T00:00:00",
                    end: "2026-01-10T00:00:00",
                    id: DayPilot.guid(),
                    resource: "R1",
                    text: "Event 1"
                }
            ],
            height: 300
        });
        dp.init();

        const app = {
            elements: {
                filter: document.querySelector("#filter"),
                hideEmpty: document.querySelector("#hideEmpty"),
                clear: document.querySelector("#clear")
            },
            filter() {
                // see dp.onRowFilter above
                dp.rows.filter({
                    query: app.elements.filter.value,
                    hideEmpty: app.elements.hideEmpty.checked
                });
            },
            init() {
                app.elements.filter.addEventListener("keyup", function() {
                    app.filter();
                });

                app.elements.hideEmpty.addEventListener("change", function() {
                    app.filter();
                });

                app.elements.clear.addEventListener("click", function(ev) {
                    ev.preventDefault();
                    app.elements.filter.value = "";
                    app.filter();
                });
            }
        };

        app.init();
```