# Row Selecting (JavaScript Scheduler) | DayPilot Pro for JavaScript Demo

> Select a row row by clicking on the header. Select multiple rows using Ctrl + click or Shift + click. Read more about [row selecting](https://doc.daypilot.org/scheduler/row-selecting/) [doc.daypilot.org].

## Links

- Canonical HTML: /demo/scheduler/rowselecting.html
- Source HTML folder: /demo/scheduler/
- Catalog root: /demo/
- Catalog: /demo/llms.txt

## Source

### Inline demo script 1

```javascript
const dp = new DayPilot.Scheduler("dp", {
            startDate: "2026-01-01",
            days: 365,
            scale: "Day",
            timeHeaders: [
                {groupBy: "Month", format: "MMMM yyyy"},
                {groupBy: "Cell", format: "d"}
            ],
            treeEnabled: true,
            resources: [
                {name: "Room A", id: "A"},
                {name: "Room B", id: "B"},
                {name: "Room C", id: "C"},
                {name: "Room D", id: "D"},
                {name: "Room E", id: "E"},
                {name: "Room F", id: "F"},
                {name: "Room G", id: "G"},
                {name: "Room H", id: "H"},
                {name: "Room I", id: "I"},
                {name: "Room J", id: "J"},
                {name: "Room K", id: "K"},
            ],
            onTimeRangeSelected: async (args) => {
                const {result} = await DayPilot.Modal.prompt("New event name:", "Event");
                dp.clearSelection();
                if (!result) return;
                const e = new DayPilot.Event({
                    start: args.start,
                    end: args.end,
                    id: DayPilot.guid(),
                    resource: args.resource,
                    text: result
                });
                dp.events.add(e);
                dp.message("Created");
            },
            rowClickHandling: "Select",
            onRowSelect: (args) => {
                if (window.console) {
                    console.log(args.row.toJSON());
                }
            },
            onRowSelected: (args) => {
                const msg = "This row was " + (args.selected ? "" : "de") + "selected: " + args.row.name;
                dp.message(msg);
                if (window.console) {
                    console.log(dp.rows.selection.get().length);
                }
            },
            selectedRows: ["A"],
            height: 300,
        });

        dp.init();
        dp.scrollTo("2026-03-25");


        const app = {
            elements: {
                add: document.querySelector('#add'),
                clear: document.querySelector('#clear'),
            },
            init() {
                this.addEventHandlers();
                this.loadEventData();
            },
            addEventHandlers() {
                this.elements.add.addEventListener('click', (ev) => {
                    ev.preventDefault();
                    // dp.rows.selection.add("B");
                    dp.rows.selection.add(dp.rows.find('B'));
                });
                this.elements.clear.addEventListener('click', (ev) => {
                    ev.preventDefault();
                    dp.rows.selection.clear();
                });
            },
            loadEventData() {
                // generate and load events
                const events = [];
                for (let i = 0; i < 15; i++) {
                    const duration = Math.floor(Math.random() * 6) + 1; // 1 to 6
                    const durationDays = Math.floor(Math.random() * 6); // 0 to 5
                    const start = Math.floor(Math.random() * 6) + 2; // 2 to 7

                    events.push({
                        start: new DayPilot.Date("2026-03-25T00:00:00").addDays(start),
                        end: new DayPilot.Date("2026-03-25T12:00:00").addDays(start).addDays(durationDays).addHours(duration),
                        id: DayPilot.guid(),
                        resource: String.fromCharCode(65 + i),
                        text: "Event"
                    });
                }
                dp.update({events});
            }
        };
        app.init();
```