Tree view

Vue Bootstrap 5 Tree view plugin

MDB treeview plugin is used to show hierarchical information which starts from the root item and proceed to its children and their respective children. Each item besides the root has a parent and can have children.

The parent is the node which is higher in the hierarchy and the child the one that is lower. Siblings are items which have one and the same parent. Items can be expanded and collapsed.

Note: Read the API tab to find all available options and advanced customization

Basic example - DOM

Initialize tree view structure with MDBTreeview component. If you want to nest your lists - wrap a text of a li tag in a tag and define other ul after it. Add .show class to the list that you want to expand from the beginning. 

<template>
  <MDBTreeview>
    <ul>
      <li>One</li>
      <li>Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li>
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Basic example - JavaScript

You can define whole structure of tree using only JavaScript. There are some props in data that you can use to customize it:

  • name - defines a text for an item
  • children - defines a nested list and it's children
  • icon - defines a custom expanding icon for the nested list
  • show - defines if list expands from the beginning or not
  • disabled - defines if list item is disabled or not
<template>
  <MDBTreeview
    :structure="[
      { name: 'One' },
      { name: 'Two' },
      {
        name: 'Three',
        children: [
          { name: 'Second-one' },
          { name: 'Second-two' },
          {
            name: 'Second-three',
            children: [
              {
                name: 'Third-one',
                children: [
                  { name: 'Fourth-one' },
                  { name: 'Fourth-two' },
                  { name: 'Fourth-three' },
                ],
              },
              { name: 'Third-two' },
              {
                name: 'Third-three',
                children: [
                  { name: 'Fourth-one' },
                  { name: 'Fourth-two' },
                  { name: 'Fourth-three' },
                ],
              },
            ],
          },
        ],
      },
    ]"
  />
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Open on item click

Use a openOnClick property to define opening lists of treeview by click only on the arrow or on the whole list item. 

<template>
  <MDBTreeview :openOnClick="false">
    <ul>
      <li>One</li>
      <li>Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li>
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Accordion

Use a accordion property to enable or disable opening only one list at the same level. 

<template>
  <MDBTreeview accordion>
    <ul>
      <li>One</li>
      <li>Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li>
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Selectable

Use a selectable property to set up checkboxes in every list item. 

<template>
  <MDBTreeview selectable>
    <ul>
      <li>One</li>
      <li>Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li>
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Expand

Expand your treeview to the particular list using the expand(ID) method. 

<template>
  <MDBRow class="justify-content-center mb-3">
    <MDBCol md="3">
      <MDBBtn
        color="primary"
        @click="expandExample?.expand('expand-example-item')"
      >
        Expand first list
      </MDBBtn>
    </MDBCol>
  </MDBRow>
  <MDBRow>
    <MDBTreeview ref="expandExample">
      <ul>
        <li>One</li>
        <li>Two</li>
        <li>
          <a>Three</a>
          <ul id="expand-example-item">
            <li>Second-one</li>
            <li>Second-two</li>
            <li>
              <a>Second-three</a>
              <ul>
                <li>
                  <a>Third-one</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
                <li>Third-two</li>
                <li>
                  <a>Third-three</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
              </ul>
            </li>
          </ul>
        </li>
      </ul>
    </MDBTreeview>
  </MDBRow>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBCol, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview,
      MDBBtn,
      MDBCol,
      MDBRow
    },
    setup() {
      const expandExample = ref(null);

      return {
        expandExample,
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBCol, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  const expandExample = ref<InstanceType<typeof MDBTreeview> | null>(null);
</script>

Collapse

Collapse your treeview using the collapse() method.

<template>
  <MDBRow class="justify-content-center mb-3">
    <MDBCol md="3">
      <MDBBtn color="primary" @click="collapseExample?.collapse()">
        Collapse treeview
      </MDBBtn>
    </MDBCol>
  </MDBRow>
  <MDBRow>
    <MDBTreeview class="treeview" ref="collapseExample">
      <ul>
        <li>One</li>
        <li>Two</li>
        <li>
          <a>Three</a>
          <ul class="show">
            <li>Second-one</li>
            <li>Second-two</li>
            <li>
              <a>Second-three</a>
              <ul class="show">
                <li>
                  <a>Third-one</a>
                  <ul class="show">
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
                <li>Third-two</li>
                <li>
                  <a>Third-three</a>
                  <ul class="show">
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
              </ul>
            </li>
          </ul>
        </li>
      </ul>
    </MDBTreeview>
  </MDBRow>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBCol, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview,
      MDBBtn,
      MDBCol,
      MDBRow
    },
    setup() {
      const collapseExample = ref();

      return {
        collapseExample,
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBCol, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  const collapseExample = ref<InstanceType<typeof MDBTreeview> | null>(null);
</script>

Custom icons - DOM

You can add your custom icons to your treeview. For non-nested elements - paste code of an icon in the item. For nested elements - declare span tag inside a element and paste there the code for your icon.

Use a rotationAngle property to define a rotation angle of nested lists icons. 

<template>
  <MDBTreeview>
    <ul>
      <li><i class="fas fa-dot-circle"></i> One</li>
      <li><i class="fas fa-dot-circle"></i> Two</li>
      <li>
        <a>
          <span><i class="fas fa-angle-double-right"></i></span>
          Three
        </a>
        <ul class="show" id="custom-icon-list">
          <li><i class="fas fa-dot-circle"></i> Second-one</li>
          <li><i class="fas fa-dot-circle"></i> Second-two</li>
          <li>
            <a
              ><span><i class="fas fa-angle-double-right"></i></span>
              Second-three</a
            >
            <ul>
              <li><i class="fas fa-dot-circle"></i> Third-one</li>
              <li><i class="fas fa-dot-circle"></i> Third-two</li>
              <li><i class="fas fa-dot-circle"></i> Third-three</li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Custom icons - JavaScript

Add icons to the list elements by pasting an icon code in the name property. If you want to change the rotatable icon in the nested list - use icon property instead. 

<template>
  <MDBTreeview :structure="customIconStructure" />
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview
    },
    setup() {
      const customIconStructure = ref([
        { name: '<i class="fas fa-dot-circle"></i> One' },
        { name: '<i class="fas fa-dot-circle"></i> Two' },
        {
          name: " Three",
          show: true,
          icon: '<i class="fas fa-angle-double-right"></i>',
          children: [
            { name: '<i class="fas fa-dot-circle"></i> Second-one' },
            { name: '<i class="fas fa-dot-circle"></i> Second-two' },
            {
              name: " Second-three",
              icon: '<i class="fas fa-angle-double-right"></i>',
              children: [
                {
                  name: " Third-one",
                  icon: '<i class="fas fa-angle-double-right"></i>',
                  children: [
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-one' },
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-two' },
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-three' },
                  ],
                },
                { name: '<i class="fas fa-dot-circle"></i> Third-two' },
                {
                  name: " Third-three",
                  icon: '<i class="fas fa-angle-double-right"></i>',
                  children: [
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-one' },
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-two' },
                    { name: '<i class="fas fa-dot-circle"></i> Fourth-three' },
                  ],
                },
              ],
            },
          ],
        },
      ]);

      return {
        customIconStructure
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { ref } from "vue";

  const customIconStructure = ref([
    { name: '<i class="fas fa-dot-circle"></i> One' },
    { name: '<i class="fas fa-dot-circle"></i> Two' },
    {
      name: " Three",
      show: true,
      icon: '<i class="fas fa-angle-double-right"></i>',
      children: [
        { name: '<i class="fas fa-dot-circle"></i> Second-one' },
        { name: '<i class="fas fa-dot-circle"></i> Second-two' },
        {
          name: " Second-three",
          icon: '<i class="fas fa-angle-double-right"></i>',
          children: [
            {
              name: " Third-one",
              icon: '<i class="fas fa-angle-double-right"></i>',
              children: [
                { name: '<i class="fas fa-dot-circle"></i> Fourth-one' },
                { name: '<i class="fas fa-dot-circle"></i> Fourth-two' },
                { name: '<i class="fas fa-dot-circle"></i> Fourth-three' },
              ],
            },
            { name: '<i class="fas fa-dot-circle"></i> Third-two' },
            {
              name: " Third-three",
              icon: '<i class="fas fa-angle-double-right"></i>',
              children: [
                { name: '<i class="fas fa-dot-circle"></i> Fourth-one' },
                { name: '<i class="fas fa-dot-circle"></i> Fourth-two' },
                { name: '<i class="fas fa-dot-circle"></i> Fourth-three' },
              ],
            },
          ],
        },
      ],
    },
  ]);
</script>

Color

Set the color of an active item using the treeviewColor property.

Current color: primary
<template>
  <div class="text-center mb-5">
    <MDBBtn color="primary" @click="treeviewColor = 'primary'">
      Primary
    </MDBBtn>
    <MDBBtn color="secondary" @click="treeviewColor = 'secondary'">
      Secondary
    </MDBBtn>
    <MDBBtn color="warning" @click="treeviewColor = 'warning'">
      Warning
    </MDBBtn>
    <MDBBtn color="danger" @click="treeviewColor = 'danger'">
      Danger
    </MDBBtn>
    <MDBBtn color="info" @click="treeviewColor = 'info'">Info</MDBBtn>
    <MDBBtn color="success" @click="treeviewColor = 'success'">
      Success
    </MDBBtn>
    <MDBBtn color="dark" @click="treeviewColor = 'dark'">Dark</MDBBtn>
  </div>
  <MDBRow class="text-center">
    <h5>Current color: <span id="current-color">primary</span></h5>
  </MDBRow>
  <MDBRow class="mt-4">
    <MDBTreeview :treeviewColor="treeviewColor">
      <ul>
        <li>One</li>
        <li>Two</li>
        <li>
          <a>Three</a>
          <ul class="show">
            <li>Second-one</li>
            <li>Second-two</li>
            <li>
              <a>Second-three</a>
              <ul>
                <li>
                  <a>Third-one</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
                <li>Third-two</li>
                <li>
                  <a>Third-three</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
              </ul>
            </li>
          </ul>
        </li>
      </ul>
    </MDBTreeview>
  </MDBRow>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview,
      MDBBtn,
      MDBRow
    },
    setup() {
      const treeviewColor = ref("primary");

      return {
        treeviewColor
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn, MDBRow } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  const treeviewColor = ref<InstanceType<typeof MDBTreeview> | null>(null);
</script>

Line

Use a line property to set up an additional line in every nested list. 

<template>
  <MDBTreeview line>
    <ul>
      <li>One</li>
      <li>Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li>
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Disabled - DOM

Add .treeview-disabled class to the a (if nested) or li tag to disable your list item. You can expand disabled items, but you can't select them. 

<template>
  <MDBTreeview selectable>
    <ul>
      <li>One</li>
      <li class="treeview-disabled">Two</li>
      <li>
        <a>Three</a>
        <ul class="show">
          <li>Second-one</li>
          <li>Second-two</li>
          <li class="treeview-disabled">
            <a>Second-three</a>
            <ul>
              <li>
                <a>Third-one</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
              <li>Third-two</li>
              <li>
                <a>Third-three</a>
                <ul>
                  <li>Fourth-one</li>
                  <li>Fourth-two</li>
                  <li>Fourth-three</li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </MDBTreeview>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";

  export default {
    components: {
      MDBTreeview
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Disabled - JavaScript

To generate a disabled list item, use disabled property. 

<template>
  <MDBTreeview :structure="disabledStructure" />
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview
    },
    setup() {
      const disabledStructure = ref([
        { name: "One", disabled: true },
        { name: "Two" },
        {
          name: " Three",
          show: true,
          children: [
            { name: "Second-one" },
            { name: "Second-two" },
            {
              name: " Second-three",
              disabled: true,
              children: [
                {
                  name: " Third-one",
                  children: [
                    { name: "Fourth-one" },
                    { name: "Fourth-two" },
                    { name: "Fourth-three" },
                  ],
                },
                { name: "Third-two" },
                {
                  name: " Third-three",
                  children: [
                    { name: "Fourth-one" },
                    { name: "Fourth-two" },
                    { name: "Fourth-three" },
                  ],
                },
              ],
            },
          ],
        },
      ]);

      return {
        disabledStructure
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { ref } from "vue";

  const disabledStructure = ref([
    { name: "One", disabled: true },
    { name: "Two" },
    {
      name: " Three",
      show: true,
      children: [
        { name: "Second-one" },
        { name: "Second-two" },
        {
          name: " Second-three",
          disabled: true,
          children: [
            {
              name: " Third-one",
              children: [
                { name: "Fourth-one" },
                { name: "Fourth-two" },
                { name: "Fourth-three" },
              ],
            },
            { name: "Third-two" },
            {
              name: " Third-three",
              children: [
                { name: "Fourth-one" },
                { name: "Fourth-two" },
                { name: "Fourth-three" },
              ],
            },
          ],
        },
      ],
    },
  ]);
</script>

Filter

Use the .filter(string) method to expand list items that meet your requirements. 

<template>
  <MDBRow class="mb-4 justify-content-center">
    <MDBCol md="6">
      <MDBInput
        v-model="filter"
        label="Find the treeview"
        @change="filterExample.filter(filter)"
      />
    </MDBCol>
  </MDBRow>
  <MDBRow>
    <MDBTreeview ref="filterExample">
      <ul>
        <li>One</li>
        <li>Two</li>
        <li>
          <a>Three</a>
          <ul>
            <li>Second-one</li>
            <li>Second-two</li>
            <li>
              <a>Second-three</a>
              <ul>
                <li>
                  <a>Third-one</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
                <li>Third-two</li>
                <li>
                  <a>Third-three</a>
                  <ul>
                    <li>Fourth-one</li>
                    <li>Fourth-two</li>
                    <li>Fourth-three</li>
                  </ul>
                </li>
              </ul>
            </li>
          </ul>
        </li>
      </ul>
    </MDBTreeview>
  </MDBRow>
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBRow, MDBCol, MDBInput } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  export default {
    components: {
      MDBTreeview,
      MDBRow,
      MDBCol,
      MDBInput
    },
    setup() {
      const filter = ref("");
      const filterExample = ref("");

      return {
        filter,
        filterExample,
      }
    }
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBRow, MDBCol, MDBInput } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  const filter = ref("");
  const filterExample = ref<InstanceType<typeof MDBTreeview> | null>(null);
</script>

Tree view - API

Import

<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
</script>

Properties

Name Type Default Description
accordion Boolean false Allows only one list on the same level to be opened
line Boolean false Adds a line to every nested list
openOnClick Boolean true Enables opening list by clicking only on the icon
tag String 'div' Sets component wrapper tag
treeviewColor String 'primary' Defines a text and background color for an active or hovered item
selectable Boolean false Setup checkboxes for the every list item
structure Array ` Setup structure of tree elements
rotationAngle Number 90 Defines a rotation angle of the icons in nested lists

Methods

Name Description
collapse Collapses every list in treeview
expand('id') Expands a treeview to the list with a particular ID
filter(string) Expands list items that meet your requirements 
<template>
  <MDBBtn color="primary" @click="treeviewRef?.collapse()"
    >Collapse list</MDBBtn
  >
  <MDBTreeview
    ref="treeviewRef"
    :structure="[
      { name: 'One' },
      { name: 'Two' },
      {
        name: 'Three',
        children: [
          { name: 'Second-one' },
          { name: 'Second-two' },
          {
            name: 'Second-three',
            children: [
              {
                name: 'Third-one',
                children: [
                  { name: 'Fourth-one' },
                  { name: 'Fourth-two' },
                  { name: 'Fourth-three' },
                ],
              },
              { name: 'Third-two' },
              {
                name: 'Third-three',
                children: [
                  { name: 'Fourth-one' },
                  { name: 'Fourth-two' },
                  { name: 'Fourth-three' },
                ],
              },
            ],
          },
        ],
      },
    ]"
  />
</template>
<script>
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn } from "mdb-vue-ui-kit";
  import { ref } from "vue";
  export default {
    components: {
      MDBTreeview,
      MDBBtn,
    },
    setup() {
      const treeviewRef = ref(null);

      return {
        treeviewRef,
      };
    },
  };
</script>
<script setup lang="ts">
  import { MDBTreeview } from "mdb-vue-tree-view";
  import { MDBBtn } from "mdb-vue-ui-kit";
  import { ref } from "vue";

  const treeviewRef = ref<InstanceType<typeof MDBTreeview> | null>(null);
</script>

Events

Name Description
select This event fires immediately when one of the treeview checkboxes are changed. Selected items are available with items property of the event.
active-item This event fires immediately when one of the treeview list items are selected by click. Selected item is available with item property of the event. 
<template>
  <MDBTreeview @select="doSomething" >...</MDBTreeview>
</template>