Below are candidate explanations for what this javascript code does.
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A link is created between the value of the wordBox element and the
variable message.
Javascript writes out a message after the user presses a button.
Javascript gets the string from the HTML element with the id of
'wordBox'. Then it assigns the string to the memory location with
the name 'message'.
The 'message' variable gets the value of whatever string is
in the "wordBox" box.
The value stored in the message variable is presented in the
wordBox box.
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