JavaScript can change HTML content.
JavaScript can change HTML attributes.
JavaScript Can Change HTML Styles (CSS)
this text will never be shown and will be replaced automatically with the one in the script tag
A Paragraph changed by a function triggered by a button
A Paragraph changed by external JS.
JavaScript can do math.
1+4=
?
document.write
VALUE OF Y =
VALUE OF Y
The result of adding 2 + 3 + "5":