How to write an HTML DOM script for printing the following any experts please.

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I want to take a value in textbox and print that value in an unordered list. then it should be such that when the next time i Take another value then the previous value should be preserved and next new value should be printed below the old value and so on. All the coding should be done in HTML and JavaScript using DOM HTML. If any experts are having any idea please tell me. I am new learner.