Symbol is a built-in object whose constructor returns a symbol primitive — also called a Symbol value or just a Symbol — that's guaranteed to be unique. Symbols are often used to add unique property keys to an object that won't collide with keys any other code might add to the object, and which are hidden from any mechanisms other code will typically use to access the object. That enables a form of weak encapsulation, or a weak form of information hiding.

The Set object lets you store unique values of any type, whether primitive values or object references.

SVG makes use of a number of data types. This article lists these types along with their syntax and descriptions of what they're used for.

The Intl object is the namespace for the ECMAScript Internationalization API, which provides a wide range of locale- and culture-sensitive data and operations.

The <feComponentTransfer> SVG filter primitive performs color-component-wise remapping of data for each pixel. It allows operations like brightness adjustment, contrast adjustment, color balance or thresholding.

The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you need exhaustive information about a language feature, have a look at the JavaScript reference.

Now that we covered the basics of the SVG internals, we will take a look at some tools to work with SVG files.

The target attribute on the SVG <a> element doesn't work in Mozilla Firefox 1.5. When SVG documents are embedded within a parent HTML document using the tag:

The <desc> SVG element provides an accessible, long-text description of any SVG container element or graphics element.

The <feComposite> SVG filter primitive performs the combination of two input images pixel-wise in image space using one of the Porter-Duff compositing operations: over, in, atop, out, xor, lighter, or arithmetic.