Node.js, a free and open source cross-platform JavaScript runtime environment, can be used to develop Web applications and Web tools based on Google’s V8 JavaScript engine. Node.js allows you to run scripts on the server side, and use JavaScript to create dynamic Web content that is then sent to the user’s Web browser. The ability to implement asynchronous I/O makes Node.js fast and extensible.

Install node. js on Ubuntu 18.04 LTS

First, upgrade source and installation package

apt-get update -y
apt-get install -y build-essential curl
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Second, pre-install PPA node.js source

A – Node.js v8.x – LTS:

curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
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B – Node.js v10.x:

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
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Third, install Node.js

apt-get install -y nodejs
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Fourth, detect the installation situation

1. Check node.js

nodejs -v
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2. Detect NPM

npm -v
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complete

 

Ubuntu16.04 Node and NPM are uninstalled

    # apt - get unloaded
    sudo apt-get remove --purge npm
    sudo apt-get remove --purge nodejs
    sudo apt-get remove --purge nodejs-legacy
    sudo apt-get autoremove

    # Delete NPM directory manually
    rm -r /usr/local/bin/npm
    rm -r /usr/local/lib/node-moudels
    find / -name npm
    rm -r /tmp/npm*
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