# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/reference/statements/throw/index.md # Original Wiki contributors mfuji09 wbamberg fscholz myf...

# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/reference/errors/missing_parenthesis_after_argument_list/index.md # Original Wiki contributor...

The font-weight attribute refers to the boldness or lightness of the glyphs used to render the text, relative to other fonts in the same font family.

The typeof operator returns a string indicating the type of the operand's value.

The patternUnits attribute indicates which coordinate system to use for the geometry properties of the <pattern> element.

The void operator evaluates the given expression and then returns undefined.

The do...while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.

The marker-start attribute defines the arrowhead or polymarker that will be drawn at the first vertex of the given shape.

The JavaScript exception "missing = in const declaration" occurs when a const declaration was not given a value in the same statement (like const RED_FLAG;). You need to provide one (const RED_FLAG = "#ff0").

The limitingConeAngle attribute represents the angle in degrees between the spot light axis (i.e., the axis between the light source and the point to which it is pointing at) and the spot light cone. So it defines a limiting cone which restricts the region where the light is projected. No light is projected outside the cone.