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Bind header double click event in Vue Kanban component

You can bind the header double click event by using the dataBound event at the initial rendering. You can get the column header text when you double click on the headers.

Source
Preview
app.vue
datasource.js
<template>
  <div id="app">
       <ejs-kanban id="kanban" keyField="Status" :dataSource="kanbanData"
        :cardSettings="cardSettings" :dataBound="OnDataBound">
          <e-columns>
            <e-column headerText="To Do" keyField="Open"></e-column>
            <e-column headerText="In Progress" keyField="InProgress"></e-column>
            <e-column headerText="Testing" keyField="Testing"></e-column>
            <e-column headerText="Done" keyField="Close"></e-column>
          </e-columns>
        </ejs-kanban>
  </div>
</template>

<script>
import Vue from "vue";
import { KanbanPlugin } from '@syncfusion/ej2-vue-kanban';
import { extend } from '@syncfusion/ej2-base';
import { DialogUtility } from '@syncfusion/ej2-popups';
import { kanbanData } from './datasource.js';
Vue.use(KanbanPlugin);
Vue.use(DialogUtility);
export default {
  data: function() {
    return {
      kanbanData: extend([], kanbanData, null, true),
      cardSettings: {
        contentField: "Summary",
        headerField: "Id"
      }
    };
  },
  methods: {
    OnDataBound: function() {
        var headerEle: HTMLElement = document.querySelector('.e-header-row');
        headerEle.addEventListener("dblclick", function (e: Event) {
            var target = closest(e.target, '.e-header-cells');
            DialogUtility.alert({
                title: 'Header',
                content: "Double clicked on " + target.querySelector('.e-header-text').innerText + " header",
                showCloseIcon: true,
                closeOnEscape: true,
                animationSettings: { effect: 'Zoom' }
            });
        });
    },
  }
}
</script>
<style>
@import '../node_modules/@syncfusion/ej2-base/styles/material.css';
@import '../node_modules/@syncfusion/ej2-buttons/styles/material.css';
@import '../node_modules/@syncfusion/ej2-layouts/styles/material.css';
@import '../node_modules/@syncfusion/ej2-dropdowns/styles/material.css';
@import '../node_modules/@syncfusion/ej2-inputs/styles/material.css';
@import '../node_modules/@syncfusion/ej2-navigations/styles/material.css';
@import '../node_modules/@syncfusion/ej2-popups/styles/material.css';
@import '../node_modules/@syncfusion/ej2-vue-kanban/styles/material.css';
</style>
define(["require", "exports"], function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.kanbanData = [
        {
            'Id': 1,
            'Status': 'Open',
            'Summary': 'Analyze the new requirements gathered from the customer.',
            'Type': 'Story',
            'Priority': 'Low',
            'Tags': 'Analyze,Customer',
            'Estimate': 3.5,
            'Assignee': 'Nancy Davloio',
            'RankId': 1
        },
        {
            'Id': 2,
            'Status': 'InProgress',
            'Summary': 'Improve application performance',
            'Type': 'Improvement',
            'Priority': 'Normal',
            'Tags': 'Improvement',
            'Estimate': 6,
            'Assignee': 'Andrew Fuller',
            'RankId': 1
        },
        {
            'Id': 3,
            'Status': 'Open',
            'Summary': 'Arrange a web meeting with the customer to get new requirements.',
            'Type': 'Others',
            'Priority': 'Critical',
            'Tags': 'Meeting',
            'Estimate': 5.5,
            'Assignee': 'Janet Leverling',
            'RankId': 2
        },
        {
            'Id': 4,
            'Status': 'InProgress',
            'Summary': 'Fix the issues reported in the IE browser.',
            'Type': 'Bug',
            'Priority': 'Release Breaker',
            'Tags': 'IE',
            'Estimate': 2.5,
            'Assignee': 'Janet Leverling',
            'RankId': 2
        },
        {
            'Id': 5,
            'Status': 'Testing',
            'Summary': 'Fix the issues reported by the customer.',
            'Type': 'Bug',
            'Priority': 'Low',
            'Tags': 'Customer',
            'Estimate': '3.5',
            'Assignee': 'Steven walker',
            'RankId': 1
        },
        {
            'Id': 6,
            'Status': 'Close',
            'Summary': 'Arrange a web meeting with the customer to get the login page requirements.',
            'Type': 'Others',
            'Priority': 'Low',
            'Tags': 'Meeting',
            'Estimate': 2,
            'Assignee': 'Michael Suyama',
            'RankId': 1
        },
        {
            'Id': 7,
            'Status': 'Validate',
            'Summary': 'Validate new requirements',
            'Type': 'Improvement',
            'Priority': 'Low',
            'Tags': 'Validation',
            'Estimate': 1.5,
            'Assignee': 'Robert King',
            'RankId': 1
        },
        {
            'Id': 8,
            'Status': 'Close',
            'Summary': 'Login page validation',
            'Type': 'Story',
            'Priority': 'Release Breaker',
            'Tags': 'Validation,Fix',
            'Estimate': 2.5,
            'Assignee': 'Laura Callahan',
            'RankId': 2
        },
        {
            'Id': 9,
            'Status': 'Testing',
            'Summary': 'Fix the issues reported in Safari browser.',
            'Type': 'Bug',
            'Priority': 'Release Breaker',
            'Tags': 'Fix,Safari',
            'Estimate': 1.5,
            'Assignee': 'Nancy Davloio',
            'RankId': 2
        },
        {
            'Id': 10,
            'Status': 'Close',
            'Summary': 'Test the application in the IE browser.',
            'Type': 'Story',
            'Priority': 'Low',
            'Tags': 'Testing,IE',
            'Estimate': 5.5,
            'Assignee': 'Margaret hamilt',
            'RankId': 3
        },
        {
            'Id': 11,
            'Status': 'Validate',
            'Summary': 'Validate the issues reported by the customer.',
            'Type': 'Story',
            'Priority': 'High',
            'Tags': 'Validation,Fix',
            'Estimate': 1,
            'Assignee': 'Steven walker',
            'RankId': 1
        },
        {
            'Id': 12,
            'Status': 'Testing',
            'Summary': 'Check Login page validation.',
            'Type': 'Story',
            'Priority': 'Release Breaker',
            'Tags': 'Testing',
            'Estimate': 0.5,
            'Assignee': 'Michael Suyama',
            'RankId': 3
        },
        {
            'Id': 13,
            'Status': 'Open',
            'Summary': 'API improvements.',
            'Type': 'Improvement',
            'Priority': 'High',
            'Tags': 'Grid,API',
            'Estimate': 3.5,
            'Assignee': 'Robert King',
            'RankId': 3
        },
        {
            'Id': 14,
            'Status': 'InProgress',
            'Summary': 'Add responsive support to application',
            'Type': 'Epic',
            'Priority': 'Critical',
            'Tags': 'Responsive',
            'Estimate': 6,
            'Assignee': 'Laura Callahan',
            'RankId': 3
        },
        {
            'Id': 15,
            'Status': 'Open',
            'Summary': 'Show the retrieved data from the server in grid control.',
            'Type': 'Story',
            'Priority': 'High',
            'Tags': 'Database,SQL',
            'Estimate': 5.5,
            'Assignee': 'Margaret hamilt',
            'RankId': 4
        },
        {
            'Id': 16,
            'Status': 'InProgress',
            'Summary': 'Fix cannot open user’s default database SQL error.',
            'Priority': 'Critical',
            'Type': 'Bug',
            'Tags': 'Database,Sql2008',
            'Estimate': 2.5,
            'Assignee': 'Janet Leverling',
            'RankId': 4
        },
        {
            'Id': 17,
            'Status': 'Testing',
            'Summary': 'Fix the issues reported in data binding.',
            'Type': 'Story',
            'Priority': 'Normal',
            'Tags': 'Databinding',
            'Estimate': '3.5',
            'Assignee': 'Janet Leverling',
            'RankId': 4
        },
        {
            'Id': 18,
            'Status': 'Close',
            'Summary': 'Analyze SQL server 2008 connection.',
            'Type': 'Story',
            'Priority': 'Release Breaker',
            'Tags': 'Grid,Sql',
            'Estimate': 2,
            'Assignee': 'Andrew Fuller',
            'RankId': 4
        },
        {
            'Id': 19,
            'Status': 'Validate',
            'Summary': 'Validate databinding issues.',
            'Type': 'Story',
            'Priority': 'Low',
            'Tags': 'Validation',
            'Estimate': 1.5,
            'Assignee': 'Margaret hamilt',
            'RankId': 1
        },
        {
            'Id': 20,
            'Status': 'Close',
            'Summary': 'Analyze grid control.',
            'Type': 'Story',
            'Priority': 'High',
            'Tags': 'Analyze',
            'Estimate': 2.5,
            'Assignee': 'Margaret hamilt',
            'RankId': 5
        },
        {
            'Id': 21,
            'Status': 'Close',
            'Summary': 'Stored procedure for initial data binding of the grid.',
            'Type': 'Others',
            'Priority': 'Release Breaker',
            'Tags': 'Databinding',
            'Estimate': 1.5,
            'Assignee': 'Steven walker',
            'RankId': 6
        },
        {
            'Id': 22,
            'Status': 'Close',
            'Summary': 'Analyze stored procedures.',
            'Type': 'Story',
            'Priority': 'Release Breaker',
            'Tags': 'Procedures',
            'Estimate': 5.5,
            'Assignee': 'Janet Leverling',
            'RankId': 7
        },
        {
            'Id': 23,
            'Status': 'Validate',
            'Summary': 'Validate editing issues.',
            'Type': 'Story',
            'Priority': 'Critical',
            'Tags': 'Editing',
            'Estimate': 1,
            'Assignee': 'Nancy Davloio',
            'RankId': 1
        },
        {
            'Id': 24,
            'Status': 'Testing',
            'Summary': 'Test editing functionality.',
            'Type': 'Story',
            'Priority': 'Normal',
            'Tags': 'Editing,Test',
            'Estimate': 0.5,
            'Assignee': 'Nancy Davloio',
            'RankId': 5
        },
        {
            'Id': 25,
            'Status': 'Open',
            'Summary': 'Enhance editing functionality.',
            'Type': 'Improvement',
            'Priority': 'Low',
            'Tags': 'Editing',
            'Estimate': 3.5,
            'Assignee': 'Andrew Fuller',
            'RankId': 5
        }
    ];
});