The following are some of the most popular string functions. (Thank you ChatGPT for much of this)

String Properties

1. .length

   • Returns the length of the string.

   let str = "p5.js";
   console.log(str.length); // Output: 5
   

String Methods

1. Searching

• .indexOf(searchValue)

  Finds the first occurrence of a substring.

  let str = "Hello, p5.js!";
  console.log(str.indexOf("p5")); // Output: 7
  

• .includes(searchValue)

  Checks if a string contains a specific substring.

  let str = "Hello, p5.js!";
  console.log(str.includes("p5")); // Output: true
  

• .startsWith(searchValue)

  Checks if a string starts with a specific substring.

  let str = "p5.js is fun!";
  console.log(str.startsWith("p5")); // Output: true
  

• .endsWith(searchValue)

  Checks if a string ends with a specific substring.

  let str = "Coding with p5.js";
  console.log(str.endsWith("p5.js")); // Output: true
  

2. Manipulation

• .toLowerCase() / .toUpperCase()

  Converts a string to lowercase or uppercase.

  let str = "p5.js";
  console.log(str.toUpperCase()); // Output: P5.JS
  

• .trim()

  Removes whitespace from the beginning and end of a string.

  let str = "   p5.js   ";
  console.log(str.trim()); // Output: "p5.js"
  

• .replace(searchValue, replaceValue)

  Replaces occurrences of a substring.

  let str = "Hello, p5.js!";
  console.log(str.replace("p5.js", "world")); // Output: Hello, world!
  

• .slice(start, end)

  Extracts a part of a string.

  let str = "p5.js is awesome!";
  console.log(str.slice(0, 5)); // Output: p5.js
  

• .substring(start, end)

  Extracts a part of a string like .slice() but without negative indices.

  let str = "p5.js is awesome!";
  console.log(str.substring(0, 5)); // Output: p5.js
  

3. Splitting and Joining