Steps to install nodejs on Raspberry Pi B+ (armv6)

install-nodejs-on-raspberrypi-armv6.md

Steps to install nodejs v6.2 on Raspberry Pi B+ (armv6)

cd ~
wget http://nodejs.org/dist/v6.2.1/node-v6.2.1-linux-armv6l.tar.gz
tar -xzf node-v6.2.1-linux-armv6l.tar.gz
node-v6.2.1-linux-armv6l/bin/node -v

The last command should print v6.2.1.

Now you can copy it to /usr/local

cd node-v6.2.1-linux-armv6l/
sudo cp -R * /usr/local/

For testing add /usr/local/bin to your path

export PATH=$PATH:/usr/local/bin
node -v
npm -v

This should print 6.2.1 and 3.9.3 for the versions of nodejs and npm. If you need a different version, just pick the one you like from the downloads.

Don't forget to add the PATH to your .bashrc to make it permanent.

To find the correct architecture, you can type uname -m

#Source http://raspberrypi.stackexchange.com/a/48313

Confirmed working for 20.7.0 on Pi Zero W

wget https://unofficial-builds.nodejs.org/download/release/v20.7.0/node-v20.7.0-linux-armv6l.tar.gz
tar -xzf node-v20.7.0-linux-armv6l.tar.gz
cd node-v20.7.0-linux-armv6l
sudo cp -R * /usr/local

Worked great on my Pi Zero W, thank you.