Is there a way to align the capital letters with the lowercase letters when counting in JavaScript?

Question

Is there a way to align the capital letters with the lowercase letters when counting in JavaScript?

I have been given an assignment where I need to count a specific letter in a string. However, the issue is that I am unsure of how to treat capital and lowercase letters as the same character. For example, if there are three instances of 'a' in the string 'aAa', my code needs to recognize them all.

Currently, my code works well when it can differentiate between capital and lowercase letters.

function countChar(string, char) {

  var count = 0;
  for (var i = 0; i < string.length; i++) {

    if (string[i] === char) {
      count = count + 1;
    }

  }
  return count;
}

javascript arrays loops

Answer 1

Answer №1

To ensure the strings are comparable, it is advisable to convert both strings to lower case using the String#toLowerCase method. Alternatively, you can achieve the same result by utilizing the String#toUpperCase method.

Both approaches yield equivalent outcomes.

char = char.toLowerCase();
string = string.toLowerCase();

Answer 2

To ensure the strings are comparable, it is advisable to convert both strings to lower case using the String#toLowerCase method. Alternatively, you can achieve the same result by utilizing the String#toUpperCase method.

Both approaches yield equivalent outcomes.

char = char.toLowerCase();
string = string.toLowerCase();

Answer 3

Answer №2

If you want to count the occurrences of a specific character in a string, you can achieve it with this simple one-liner:

const countOccurrences = (str, char) => str.toLowerCase().split('').reduce((count, x) => (x === char ? count + 1 : count), 0);

console.log(countOccurrences('Hello World', 'o'));

Answer 4

If you want to count the occurrences of a specific character in a string, you can achieve it with this simple one-liner:

const countOccurrences = (str, char) => str.toLowerCase().split('').reduce((count, x) => (x === char ? count + 1 : count), 0);

console.log(countOccurrences('Hello World', 'o'));

Answer 5

Answer №3

How to change a string to lowercase:

.toLowerCase()

Here is a JavaScript function that counts the occurrences of a specific character in a string, ignoring case sensitivity:

function countChar(string, char) {
  string = string.toLowerCase();
  char=char.toLowerCase();
  var count = 0;
  for (var i = 0; i < string.length; i++) {
    if (string[i] === char) {
      count = count + 1;
    }
  }
  return count;
}
console.log(countChar('aAa', 'A'))

Answer 6

How to change a string to lowercase:

.toLowerCase()

Here is a JavaScript function that counts the occurrences of a specific character in a string, ignoring case sensitivity:

function countChar(string, char) {
  string = string.toLowerCase();
  char=char.toLowerCase();
  var count = 0;
  for (var i = 0; i < string.length; i++) {
    if (string[i] === char) {
      count = count + 1;
    }
  }
  return count;
}
console.log(countChar('aAa', 'A'))

Is there a way to align the capital letters with the lowercase letters when counting in JavaScript?

Answer №1

Answer №2

Answer №3

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