Agent-readable demo data

Title

Scrolling (JavaScript Scheduler) | DayPilot Pro for JavaScript Demo

Tree

DayPilot JavaScript Demo

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Description

You can use the Scheduler API to scroll programmatically. Read more about the JavaScript scheduler.

• Canonical HTML: /demo/scheduler/scrolling.html
• Markdown companion: /demo/scheduler/scrolling.md
• Folder: /demo/scheduler/
• Root: /demo/
• Catalog: /demo/llms.txt

Inline demo script 1

const dp = new DayPilot.Scheduler("dp", {
            startDate: "2026-01-01",
            days: 366,
            scale: "Day",
            timeHeaders: [
                {groupBy: "Month", format: "MMMM yyyy"},
                {groupBy: "Cell", format: "d"}
            ],
            heightSpec: "Max",
            height: 300,
            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"}
            ],
            scrollStep: 20,
            onTimeRangeSelected: args => {
                const name = window.prompt("New event name:", "Event");
                dp.clearSelection();
                if (!name) return;
                const e = new DayPilot.Event({
                    start: args.start,
                    end: args.end,
                    id: DayPilot.guid(),
                    resource: args.resource,
                    text: name
                });
                dp.events.add(e);
                dp.message("Created");
            }
        });
        dp.init();
        dp.scrollTo("2026-03-25");

        const app = {
            elements: {
                start: document.querySelector("#start"),
                now: document.querySelector("#now"),
                end: document.querySelector("#end"),
                animated: document.querySelector("#animated"),
                target: document.querySelector("#target")
            },
            init() {
                this.loadEventData();
                this.addEventHandlers();
            },
            loadEventData() {
                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
                    const res = Math.floor(Math.random() * 6); // 0 to 5

                    const event = {
                        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"
                    };

                    events.push(event);
                }
                dp.update({events});
            },
            addEventHandlers() {
                this.elements.start.addEventListener("click", (ev) => {
                    ev.preventDefault();
                    dp.scrollTo("2026-01-01", app.animated, app.target);
                });
                this.elements.now.addEventListener("click", (ev) => {
                    ev.preventDefault();
                    dp.scrollTo(DayPilot.Date.now(), app.animated, app.target);
                });
                this.elements.end.addEventListener("click", (ev) => {
                    ev.preventDefault();
                    dp.scrollTo("2026-12-31", app.animated, app.target);
                });
            },
            get animated() {
                return this.elements.animated.value === "true";
            },
            get target() {
                return this.elements.target.value;
            }
        };
        app.init();