JavaScript(JS) JS check the number of occurrences of a character in the string

In JavaScript, you can check the number of occurrences of a character in a string using a loop and a counter variable. Here's an example:

const myString = 'Hello World';
const charToCount = 'l';
let count = 0;

for (let i = 0; i < myString.length; i++) {
  if (myString[i] === charToCount) {
    count++;
  }
}

console.log(`The character '${charToCount}' appears ${count} times in '${myString}'`);

In the above example, we declare the string myString and the character we want to count charToCount. We then initialize a counter variable count to 0.

We then loop through the string using a for loop and check whether each character in the string matches the character we want to count. If it does, we increment the count variable by 1.

After the loop has finished, we output the result using console.log(). The result is a string that states how many times the character we wanted to count appears in the original string.