By a show of hands, how many knew that
HTMLElement.style is readonly?
Styles should not be set by assigning a string directly to the
styleproperty (as in
element.style = "color: blue;"), since it is considered read-only, as the style attribute returns a CSSStyleDeclaration object which is also read-only.
element.style = "color: blue;" will give you the following error in strict mode:
TypeError: Assignment to read-only properties is not allowed in strict mode
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