Categories: Range

javascript Range compareNode( )

@March 15, 2008, 1:22 a.m.

compareNode( )

Firefox/Netscape/NN 6 IE n/a Chrome/Safari/DOM n/a

compareNode(nodeReference)

A Netscape-only method that returns an integer code indicating the relative position of some other node with respect to the current range. Four plain-language constants are members of every Netscape Range object, and can be used for comparisons of values returned by the compareNode( ) method. Note that the returned values are from the point of view of the node passed as a parameter, rather than from that of the current range.

Returned values and constants are as follows.

Constant	Value	Description
rng.NODE_BEFORE	0	Entire node comes before the range.
rng.NODE_AFTER	1	Entire node comes after the range.
rng.NODE_BEFORE_AND_AFTER	2	Node starts before the current range and ends after it.
rng.NODE_INSIDE	3	Node is contained in its entirety within the scope of the range.

By way of example:

if (rng.compareNode(document.getElementById("myElem")) == rng.NODE_INSIDE) {
    // process for myElem node being contained by the range
}

Parameters

Reference to any node in the document tree.

Returned Value

Integer values 0, 1, 2, or 3.

javascript Range compareBoundaryPoints( )

Permanent URL: http://javascript.gakaa.com/range-comparenode-4-0-5-.aspx

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