How to check Bootstrap version in Liferay DXP?

To check bootstrap version in Liferay DXP, follow the following steps:

1. Open the browser’s developer console (usually by pressing F12 or right-clicking on the page and selecting “Inspect” or “Inspect Element”).
2. Insert the following line into the console input:
   $.fn.tooltip.Constructor.VERSION;
3. Hit return and observe the output. The exact Bootstrap version applied to your current Liferay DXP instance will be displayed.