HTMLTableElement.createCaption()
 The HTMLTableElement.createCaption() method returns the <caption> element associated with a given <table>. If no <caption> element exists on the table, this method creates it, and then returns it. 
 Note: If no caption exists, createCaption() inserts a new caption directly into the table. The caption does not need to be added separately as would be the case if Document.createElement() had been used to create the new <caption> element. 
Syntax
HTMLTableElement = table.createCaption();
Return value
HTMLTableCaptionElementExample
This example uses JavaScript to add a caption to a table that initially lacks one.
HTML
<table> <tr><td>Cell 1.1</td><td>Cell 1.2</td><td>Cell 1.3</td></tr> <tr><td>Cell 2.1</td><td>Cell 2.2</td><td>Cell 2.3</td></tr> </table>
JavaScript
let table = document.querySelector('table'); let caption = table.createCaption(); caption.textContent = 'This caption was created by JavaScript!';
Result
Specifications
| Specification | 
|---|
| HTML Standard (HTML) # dom-table-createcaption-dev | 
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
| createCaption | 1 | 12 | 1 | 5.5 | ≤12.1 | 3 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
    © 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/createCaption