Скачать или смотреть HTML : document.getElementByID("test").innerHTML giving TypeError: 'undefined' is not a function (ev

HTML : document.getElementByID("test").innerHTML giving TypeError: 'undefined' is not a function (evaluating 'document.getElementByID("test")')
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As I promised, I have a secret feature to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

A short overview of who I am,
Greetings, my name is Delphi.
Let me help you get the answers you need to your questions.
HTML : document.getElementByID("test").innerHTML giving TypeError: 'undefined' is not a function (evaluating 'document.getElementByID("test")')
Let me know if you have more specific questions or concerns by leaving a comment or starting a chat.
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giving (evaluating is TypeError: 'document.getElementByID("test")') a 'undefined' not : function document.getElementByID("test").innerHTML HTML