Sams Teach Yourself HTML, CSS and JavaScript All in One (Gal Zentner's Library) by Julie C. Meloni

Author:Julie C. Meloni
Language: eng
Format: epub
Publisher: Sams
Published: 2012-06-13T16:00:00+00:00

Node Methods

Each node within a page has a number of methods available. Which of these are valid depends on the node’s position in the page and whether it has parent or child nodes. These include the following:

• appendChild(new) appends the specified new node after all of the object’s existing nodes.

• insertBefore(new, old) inserts the specified new child node before the specified old child node, which must already exist.

• replaceChild(new, old) replaces the specified old child node with a new node.

• removeChild(node) removes a child node from the object’s set of children.

• hasChildNodes() returns a Boolean value of true if the object has one or more child nodes or false if it has none.

• cloneNode() creates a copy of an existing node. If a parameter of true is supplied, the copy will also include any child nodes of the original node.

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