The JavaScript exception "missing } after function body" occurs when there is a syntax mistake when creating a function somewhere. Check if any closing curly brackets or parenthesis are in the correct order.

The ideographic attribute indicates the alignment coordinate for glyphs to achieve ideographic baseline alignment for horizontally oriented glyph layouts.

The JavaScript exception "function statement requires a name" occurs when there is a function statement in the code that requires a name.

The numOctaves attribute defines the number of octaves for the noise function of the <feTurbulence> primitive.

The pointsAtX attribute represents the x location in the coordinate system established by attribute primitiveUnits on the <filter> element of the point at which the light source is pointing.

The JavaScript error "unterminated string literal" occurs when there is an unterminated String somewhere. String literals must be enclosed by single (') or double (") quotes.

The mask attribute is a presentation attribute mainly used to bind a given <mask> element with the element the attribute belongs to.

The JavaScript exception "invalid date" occurs when a string leading to an invalid date has been provided to Date or Date.parse().

The refY attribute defines the y coordinate of an element’s reference point.

The JavaScript exception "invalid assignment left-hand side" occurs when there was an unexpected assignment somewhere. For example, a single "=" sign was used instead of "==" or "===".