dhtmlxGantt with Vue.js

note

This tutorial shows how to use the JS DHTMLX Gantt package directly in a Vue app without the official wrapper.

If you want Vue props/events, wrapper-managed sync, and wrapper composables, use Vue Gantt instead.

This page is for low-level integration. You initialize and manage the Gantt instance yourself.

Prerequisites

• Node.js installed
• Basic Vue 3 knowledge (components, refs, lifecycle hooks)
• A Vue 3 project (this tutorial shows how to create one with Vite)

1. Create A Vue Project

Create a Vue 3 app with Vite:

npm create vue@latest gantt-vue-app
cd gantt-vue-app

Install dependencies and start the dev server once to confirm the project works:

• npm:

npm install
npm run dev

• yarn:

yarn install
yarn dev

The app should be available at http://localhost:5173.

Stop the dev server (Ctrl+C) before the next step.

2. Install The JS Gantt Package

Professional builds of the JS Gantt library are available via private npm. Follow the installation guide to get access.

Evaluation build (public tutorial package):

• npm:

npm install @dhx/trial-gantt

• yarn:

yarn add @dhx/trial-gantt

Professional build (private npm):

• npm:

npm install @dhx/gantt

• yarn:

yarn add @dhx/gantt

You can also install Gantt from a local folder because the package is structured as an npm module.

3. Create A Gantt Component

Create src/components/GanttView.vue and initialize Gantt in Vue lifecycle hooks.

If you installed the evaluation build, use these imports:

src/components/GanttView.vue

<script setup lang="ts">
import { onBeforeUnmount, onMounted, ref } from "vue";
import { Gantt, type GanttStatic } from "@dhx/trial-gantt";
import "@dhx/trial-gantt/codebase/dhtmlxgantt.css";

const container = ref<HTMLElement | null>(null);
let gantt: GanttStatic | null = null;

onMounted(() => {
  if (!container.value) return;

  gantt = Gantt.getGanttInstance();
  gantt.init(container.value);
});

onBeforeUnmount(() => {
  gantt?.destructor();
  gantt = null;
});
</script>

<template>
  <div ref="container" className="gantt-host"></div>
</template>

<style>
.gantt-host {
  width: 100%;
  height: 600px;
}
</style>

If you installed the professional build, replace the package imports:

import { Gantt, type GanttStatic } from "@dhx/gantt";
import "@dhx/gantt/codebase/dhtmlxgantt.css";

If you installed Gantt from a local folder package, imports usually look like this:

import { Gantt, type GanttStatic } from "dhtmlx-gantt";
import "dhtmlx-gantt/codebase/dhtmlxgantt.css";

4. Render The Gantt Component In The App

Replace src/App.vue:

src/App.vue

<script setup lang="ts">
import GanttView from "./components/GanttView.vue";
</script>

<template>
  <GanttView />
</template>

To let the chart use the page height, update your global styles (for example src/assets/main.css):

src/assets/main.css

html,
body,
#app {
  width: 100%;
  height: 100vh;
  margin: 0;
  padding: 0;
}

Start the app again. You should see an empty Gantt chart.

5. Provide Data

Create src/demo-data.ts:

src/demo-data.ts

export function getData() {
  return {
    data: [
      {
        id: 10,
        text: "Project #1",
        start_date: "2026-02-02 00:00",
        duration: 6,
        progress: 0.4,
        open: true
      },
      {
        id: 1,
        text: "Task #1",
        start_date: "2026-02-02 00:00",
        duration: 2,
        progress: 0.6,
        parent: 10
      },
      {
        id: 2,
        text: "Task #2",
        start_date: "2026-02-04 00:00",
        duration: 3,
        progress: 0.2,
        parent: 10
      }
    ],
    links: [{ id: 1, source: 1, target: 2, type: "0" }]
  };
}

Update src/components/GanttView.vue and parse the data:

src/components/GanttView.vue

<script setup lang="ts">
import { onBeforeUnmount, onMounted, ref } from "vue";
import { Gantt, type GanttStatic } from "@dhx/trial-gantt";
import "@dhx/trial-gantt/codebase/dhtmlxgantt.css";
import { getData } from "../demo-data";

const container = ref<HTMLElement | null>(null);
let gantt: GanttStatic | null = null;

onMounted(() => {
  if (!container.value) return;

  gantt = Gantt.getGanttInstance();
  gantt.config.date_format = "%Y-%m-%d %H:%i";
  gantt.init(container.value);
  gantt.parse(getData());
});

onBeforeUnmount(() => {
  gantt?.destructor();
  gantt = null;
});
</script>

<template>
  <div ref="container" className="gantt-host"></div>
</template>

<style>
.gantt-host {
  width: 100%;
  height: 600px;
}
</style>

Reload the page. You should see a Gantt chart with tasks and a dependency link.

6. Capture And Save Changes

Use a dataProcessor to handle chart changes and send them to your backend.

Add a handler after gantt.init(...):

gantt.createDataProcessor((entity, action, data, id) => {
  console.log("[dp]", entity, action, data, id);
});

DHTMLX Gantt accepts Promise responses from dataProcessor handlers. If your backend changes IDs on create, return an object like { id: newId } or { tid: newId } so Gantt can remap the record.

For full backend patterns, see server-side integration.

Result

You now have a Vue app with direct JS Gantt integration:

• Vue owns the component lifecycle
• your code initializes and destroys the Gantt instance
• data is loaded with gantt.parse(...)
• edits can be handled with gantt.createDataProcessor(...)

Security Note

Gantt does not protect your backend from SQL injection, XSS, or CSRF. Backend validation, authorization, and output sanitization remain your responsibility.

Read Application Security for the main risk areas and mitigation guidance.

What To Read Next

• Vue Gantt (official wrapper)
• Vue Gantt Overview
• DHTMLX Gantt Guides