[Golang] Number of Child Nodes via net/html Package

Introduction

Get the number of child nodes via Go net/html package. Equivalent to the following JavaScript code:

var c = document.getElementById("foo").childNodes.length;

Install net/html package

$ go get -u golang.org/x/net/html

Number of Child Nodes

package getelementbyid

import (
      "golang.org/x/net/html"
)

func numberOfChild(n *html.Node) int {
      if n == nil {
              return -1
      }

      count := 0
      for c := n.FirstChild; c != nil; c = c.NextSibling {
              count += 1
      }

      return count
}

Tested on: Ubuntu Linux 15.10, Go 1.6.1.

References:

[1]	jquery iterate over elements - Google search

[2]	net/html go - Google search A Simple Web Scraper in Go \| Gregory Schier golang.org/x/net/html GoDoc

[3]	github.com/PuerkitoBio/goquery - GoDoc

[4]	[Golang] Iterate over All DOM Elements in HTML

[5]	[Golang] getElementById via net/html Package