What should I do if the command to install vue fails?

It is a common practice to install vue using the command line, but sometimes it is easy to encounter problems with unsuccessful installation. This article will introduce some common reasons and solutions to help you install vue smoothly.

1. Check node and npm versions

Before installing vue, you need to install node and npm first. In order to avoid version problems, it is recommended that you first check your node and npm versions. You can enter the following command on the command line to view:

node -v
npm -v

If the version is too low, you can go to the node official website to download and install the new version.

2. Set npm mirror source

Sometimes, for some reason, npm's default mirror source will be blocked or very slow. At this time, you need to set up the npm mirror source. It is usually recommended to use Taobao mirror source. You can use the following command to configure:

npm config set registry https://registry.npm.taobao.org

If you need to restore the default mirror source, you can use the following command:

npm config set registry https://registry.npmjs.org/

3. Check whether the network is normal

During installation Before vue, you need to ensure that the network is normal. You can try to use other network environments for installation, or turn off some network acceleration software.

4. Use the sudo command to install

Sometimes, due to permission issues, you need to use the sudo command to install vue. You can try to install using the following command:

sudo npm install -g @vue/cli

When prompted, enter the password.

5. Upgrade npm and vue-cli

If there is a prompt that the version is too low, you can try to upgrade npm and vue-cli.

You can use the following command to upgrade npm:

npm install -g npm

You can use the following command to upgrade vue-cli:

npm update -g @vue/cli

In general, you sometimes encounter problems when installing vue from the command line Various problems, but most of them can be solved by the above methods. I hope this article can help you install vue smoothly and carry out development work smoothly.

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