Agent-readable demo data

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Time Range Selecting (JavaScript Scheduler) | DayPilot Pro for JavaScript Demo

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DayPilot JavaScript Demo

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Description

This page uses a custom rule for event creating (maximum of 3 days can be selected), implemented using the onTimeRangeSelecting event. Read more about the time range selecting.

• Canonical HTML: /demo/scheduler/timerangeselecting.html
• Markdown companion: /demo/scheduler/timerangeselecting.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: 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"}
            ],
            eventEndSpec: "Date",
            onTimeRangeSelected: async args => {
                const modal = await DayPilot.Modal.prompt("New event name:", "Event");
                const name = modal.result;
                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");
            },
            onTimeRangeSelecting: args => {
                if (args.duration.totalDays() > 3) {
                    args.allowed = false;
                    args.left.enabled = false;
                    args.right.enabled = true;
                    args.right.html = "Maximum selection size is 3 days.";
                }
            },
            height: 350
        });
        dp.init();
        dp.scrollTo("2026-03-25");