Agent-readable demo data

Title

Event Deleting (JavaScript Scheduler) | DayPilot Pro for JavaScript Demo

Tree

DayPilot JavaScript Demo

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Default

Description

Read more about event deleting [doc.daypilot.org].

• Canonical HTML: /demo/scheduler/eventdeleting.html
• Markdown companion: /demo/scheduler/eventdeleting.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: "Day", format: "d"}
            ],
            treeEnabled: true,
            eventDeleteHandling: "Update",
            onEventDeleted: args => {
                dp.message("Deleted.");
            },
            contextMenu: new DayPilot.Menu({
                items: [
                    {
                        text: "Edit",
                        onClick: (args) => {
                            dp.events.edit(args.source);
                        }
                    },
                    {
                        text: "Delete",
                        onClick: (args) => {
                            dp.events.remove(args.source);
                        }
                    },
                    {text: "-"},
                    {
                        text: "Select",
                        onClick: (args) => {
                            dp.multiselect.add(args.source);
                        }
                    },
                ]
            }),
            height: 350
        });

        dp.init();
        dp.scrollTo("2026-07-01");

        const app = {
            barColor(i) {
                const colors = ["#3c78d8", "#6aa84f", "#f1c232", "#cc0000"];
                return colors[i % 4];
            },
            barBackColor(i) {
                const colors = ["#a4c2f4", "#b6d7a8", "#ffe599", "#ea9999"];
                return colors[i % 4];
            },
            loadData() {
                const resources = [
                    {
                        name: "Locations", id: "G1", expanded: true, children: [
                            {name: "Room 1", id: "A"},
                            {name: "Room 2", id: "B"},
                            {name: "Room 3", id: "C"},
                            {name: "Room 4", id: "D"},
                        ]
                    },
                    {
                        name: "People", id: "G2", expanded: true, children: [
                            {name: "Person 1", id: "E"},
                            {name: "Person 2", id: "F"},
                            {name: "Person 3", id: "G"},
                            {name: "Person 4", id: "H"}
                        ]
                    },
                    {
                        name: "Tools", id: "G3", expanded: true, children: [
                            {name: "Tool 1", id: "I"},
                            {name: "Tool 2", id: "J"},
                            {name: "Tool 3", id: "K"},
                            {name: "Tool 4", id: "L"}
                        ]
                    },
                    {
                        name: "Other Resources", id: "G4", expanded: true, children: [
                            {name: "Resource 1", id: "R1"},
                            {name: "Resource 2", id: "R2"},
                            {name: "Resource 3", id: "R3"},
                            {name: "Resource 4", id: "R4"}
                        ]
                    },
                ];

                const events = [];
                for (let i = 0; i < 12; i++) {
                    const duration = Math.floor(Math.random() * 6) + 1; // 1 to 6
                    const durationDays = Math.floor(Math.random() * 6) + 1; // 1 to 6
                    const start = Math.floor(Math.random() * 6) + 2; // 2 to 7

                    const e = {
                        start: new DayPilot.Date("2026-07-05T12:00:00").addDays(start),
                        end: new DayPilot.Date("2026-07-05T12:00:00").addDays(start).addDays(durationDays).addHours(duration),
                        id: i + 1,
                        resource: String.fromCharCode(65 + i),
                        text: "Event " + (i + 1),
                        barColor: app.barColor(i),
                        barBackColor: app.barBackColor(i),
                    };

                    events.push(e);
                }

                dp.update({resources, events});
            },
        };

        app.loadData();