Set up a repository on Github

2. Create a. Gitignore file in the project root directory

# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
/.idea
# dependencies
/node_modules
/.pnp
.pnp.js

# testing
/coverage

# production
/build

# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local

npm-debug.log*
yarn-debug.log*
yarn-error.log*

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Initialize Git

git init
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4. Add existing files to the staging area

git add .
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Commit to the version area

Git commit -mCopy the code

6. Associate the local warehouse with the remote warehouse

git remote add origin https://github.com/xxx.git 
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7. Push local branches to remote locations

git push origin master
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Create a new branch (the original branch needs to be saved and committed before creation)

Git checkout -b dev # git origin devCopy the code

View all branches

git branch -a
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Switch branch

Git Checkout branch nameCopy the code

Obtain remote branches by cloning

Git clone -b dev origin/devCopy the code

Git pull differs from Git push