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sum

files/en-us/web/xml/xpath/reference/functions/sum/index.md

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The sum function returns a number that is the sum of the numeric values of each node in a given node-set.

Syntax

plain
sum(node-set)

Parameters

  • node-set
    • : The node-set to be evaluated. Each node in this node-set is evaluated as if it were passed to the number() function, and a sum of the resulting numbers is returned.

Return value

A number.

Description

None.

Specifications

XPath 1.0 4.3

Gecko support

Supported.