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Day , what did learn

Linda Hamilton

Release： 2024-12-24 05:03:13

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Day , what did learn

i am learning C to become a game dev but i thought why not learn web dev with it so i started learning front end and will be posting my journey from now on .

Here is a Single-Page Front-End Development Cheat Sheet for quick reference:

HTML (HyperText Markup Language)

Basic Structure:

  <!DOCTYPE html>
  <html lang="en">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>Title</title>
    </head>
    <body>
      <header></header>
      <main></main>
      <footer></footer>
    </body>
  </html>

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Elements:
- Basic Tags:
  ,
  ,
  -
  ,
  , , ,
CSS (Cascading Style Sheets)
- Syntax:
```
  selector {
    property: value;
  }
```
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- Selectors:
  - element, .class, #id, element.class, element#id
  - Pseudo-classes: :hover, :active, :focus
  - Pseudo-elements: ::before, ::after
- Layout Techniques:
  - Flexbox:
  .container { display: flex; justify-content: center; align-items: center; flex-direction: row; /* or column */ }
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  - Grid:
  .grid-container { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
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- Positioning:
  - static, relative, absolute, fixed, sticky
- Box Model:
  - Margin, Padding, Border, Content
```
  div {
    margin: 10px;
    padding: 20px;
    border: 1px solid #000;
  }
```
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- Media Queries (for Responsiveness):
```
  @media screen and (max-width: 768px) {
    .container {
      display: block;
    }
  }
```
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JavaScript
- Variables:
```
  let variable = "value"; // Mutable
  const constant = "value"; // Immutable
```
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- Functions:
```
  function myFunction() {
    console.log("Hello");
  }

  const myArrowFunction = () => console.log("Hello");
```
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- DOM Manipulation:
  - Access and modify elements:
```
const el = document.getElementById('id');
el.style.color = "red";
el.innerHTML = 'New Content';
```
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- Event Handling:
```
  <!DOCTYPE html>
  <html lang="en">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>Title</title>
    </head>
    <body>
      <header></header>
      <main></main>
      <footer></footer>
    </body>
  </html>
```
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- Array Methods:
  - map(), filter(), reduce(), forEach()
```
  selector {
    property: value;
  }
```
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React.js (Basics)
- Creating a Component:
```
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: row; /* or column */
}
```
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- JSX Syntax:
```
.grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
```
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- State and Props:
```
  div {
    margin: 10px;
    padding: 20px;
    border: 1px solid #000;
  }
```
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- useEffect Hook:
```
  @media screen and (max-width: 768px) {
    .container {
      display: block;
    }
  }
```
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Version Control (Git)
- Basic Commands:
  - git init - Initialize repository
  - git status - Check current status
  - git add . - Stage all changes
  - git commit -m "Message" - Commit changes
  - git push - Push to remote repository
  - git pull - Fetch updates
Common Tools
- npm (Node Package Manager) Commands:
  - npm install - Install a package
  - npm start - Start the application
- Code Formatter:
  - Prettier - Auto-format code
  - ESLint - Linting to catch potential errors
The above is the detailed content of Day , what did learn. For more information, please follow other related articles on the PHP Chinese website!

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