The JavaScript exceptions thrown by JSON.parse() occur when string failed to be parsed as JSON.

The specularExponent attribute controls the focus for the light source. The bigger the value the brighter the light.

The JavaScript exception "missing ; before statement" occurs when there is a semicolon (;) missing somewhere and can't be added by automatic semicolon insertion (ASI). You need to provide a semicolon, so that JavaScript can parse the source code correctly.

The stemh attribute indicates the horizontal stem width of the font.

The z attribute defines the location along the z-axis for a light source in the coordinate system established by the primitiveUnits attribute on the <filter> element, assuming that, in the initial coordinate system, the positive z-axis comes out towards the person viewing the content and assuming that one unit along the z-axis equals one unit in x and y.

The JavaScript exception "missing ) after condition" occurs when there is an error with how an if condition is written. It must appear in parenthesis after the if keyword.

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

The textLength attribute, available on SVG <text> and <tspan> elements, lets you specify the width of the space into which the text will draw. The user agent will ensure that the text does not extend farther than that distance, using the method or methods specified by the lengthAdjust attribute. By default, only the spacing between characters is adjusted, but the glyph size can also be adjusted if you change lengthAdjust.

The spreadMethod attribute determines how a shape is filled beyond the defined edges of a gradient.

The crossorigin attribute, valid on the <image> and <feImage> elements, provides support for configuration of the Cross-Origin Resource Sharing (CORS) requests for the element's fetched data.