The stop-opacity attribute defines the opacity of a given color gradient stop.

The JavaScript exception "invalid Array.prototype.sort argument" occurs when the argument of Array.prototype.sort() (and its related methods: Array.prototype.toSorted(), TypedArray.prototype.sort(), TypedArray.prototype.toSorted()) isn't either undefined or a function which compares its operands.

The stitchTiles attribute defines how the Perlin Noise tiles behave at the border.

The strict equality (===) operator checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always considers operands of different types to be different.

The overline-thickness attribute represents the ideal thickness of the overline. The overline thickness is expressed in the font's coordinate system.

The path attribute has two different meanings, either it defines a text path along which the characters of a text are rendered, or a motion path along which a referenced element is animated.

The set syntax binds an object property to a function to be called when there is an attempt to set that property. It can also be used in classes.

A character class matches any character in or not in a custom set of characters. When the v flag is enabled, it can also be used to match finite-length strings.

The JavaScript exception "SyntaxError: private fields can't be deleted" occurs when delete is used on a private property of a class or an object.

The JavaScript exception "await is only valid in async functions, async generators and modules" occurs when an await expression is used outside of async functions or modules or other async contexts.