Revision checklist

These questions are designed to give you an idea of what concepts you might need to revisit from the first few weeks of the course.

This isn't a test and you can't fail, so don't worry about getting some answers wrong. It's purely for your own benefit, so try to answer each question honestly without looking them up first!

Git

• Why do we use Git?

• What's the difference between Git and GitHub?

• What happens when you clone a repository?

• What happens when we do git pull origin main

• How do we create a new branch on our local machine?

• How do we control which changes will be included in the next commit?

• When might git add . be inappropriate?

• How do we make sure our local changes don't conflict with main?

• What does git push origin [branch-name] do?

• Why do we make pull requests instead of just changing main directly?

• Why should you review your teammates' pull requests?

HTML

• Why is accessibility important?

• How can you quickly find simple accessibility problems?

• What is semantic HTML?

CSS

• How would you use CSS variables to make a reusable colour palette?

• How would you use flexbox to make elements sit on a single line?

• How would you use grid to make a layout that automatically adds columns as the screen gets wider?

Javascript

• Why should we avoid using var to define variables?

• How might you make a long, complex chunk of code easier to read?

• What is a "callback"?

Array methods

• How would you use array.map() to create a new array with transformed values?

• How would you use array.filter() to create a new array with certain values removed?

• How would you use array.find()

Promises & fetch

• What is a promise?

• How do promises help manage asynchronous code?

• What does a promise's .then method return?

HTTP

• What is an HTTP request?

• What kind of request is sent when you click a link in your browser?

• What kind of request is sent when you submit a form in your browser?

DOM

• How would you get a reference to a DOM element in your JS?

• How would you get references to multiple DOM elements at once in your JS?

• How would you update properties of a DOM element?

Testing

• Why are tests useful?

• What is the difference between unit and integration tests?

• What kind of code is easier to test?

Debugging

• What process would you take to find out why your code isn't working?

• What tools do JS/dev tools have to help debug your code?

• At what point should you ask for someone else's help?