JavaScript : How do I change the text of a span element using JavaScript?

JavaScript : How do I change the text of a span element using JavaScript?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

Here's a brief description of who I am,
Hey, I am Delphi.
I can provide you with assistance to help you answer your questions.
JavaScript : How do I change the text of a span element using JavaScript?
Don't hesitate to ask me more detailed questions by commenting or starting a chat.
If you have knowledge to contribute or an answer to provide, we encourage you to comment below.
I will 'heart' your answer as a sign of appreciation.
a of do the change How text element using span I : JavaScript? JavaScript