# Auto Cell Width (JavaScript Gantt Chart) | DayPilot Pro for JavaScript Demo

> Read more about the [auto cell width](https://doc.daypilot.org/gantt/auto-cell-width/).

## Links

- Canonical HTML: /demo/gantt/autocellwidth.html
- Source HTML folder: /demo/gantt/
- Catalog root: /demo/
- Catalog: /demo/llms.txt

## Source

### Inline demo script 1

```javascript
var dp = new DayPilot.Gantt("dp");

        dp.cellWidthSpec = "Auto";

        // generate and load sample tasks
        var start = new DayPilot.Date().getDatePart();
        var last = null;
        for (var i = 0; i < 10; i++) {
            var duration = Math.floor(Math.random() * 3) + 1; // 1 to 3
            var end = start.addDays(duration);

            var e = new DayPilot.Task({
                start: start,
                end: end,
                id: DayPilot.guid(),
                text: "Task " + i,
                tags: {
                    info: "info text"
                },
                children: [
                    {
                        start: start,
                        end: end,
                        id: DayPilot.guid(),
                        text: "Subtask 1",
                        complete: Math.floor(Math.random() * 101) // 0 to 100
                    },
                    {
                        start: start,
                        end: end,
                        id: DayPilot.guid(),
                        text: "Subtask 2",
                        complete: Math.floor(Math.random() * 101) // 0 to 100
                    },
                    {
                        start: end,
                        id: DayPilot.guid(),
                        text: "Milestone 1",
                        type: "Milestone"
                    }

                ]
            });

            dp.tasks.add(e);

            if (last) {
                dp.links.add({from: last, to: e.id(), type: "FinishToStart"});
            }
            last = e.id();
            start = end;

        }

        dp.columns = [
            {
                title: "Name",
                width: 50,
                property: "text"
            },
            {
                title: "Info",
                width: 50,
                property: "info"
            },
            {
                title: "Duration",
                width: 50,
                format: function (args) {
                    var duration = args.task.duration();
                    return duration.toString("d") + "d " + duration.toString("h") + "h";
                }
            }
        ];

        dp.onTaskClicked = function (args) {
            alert("Clicked: " + args.e.id());
        };

        dp.init();
```