Count Number of a Character in String In Javascript

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In this blog post, we count the number of characters in string In javascript. Such if we a string like: “Hello, codemen. How are you?” In this string, we want to count the number of characters “y”. the result should be 1.

Method 1 : Using Match

The match() method retrieves the result of matching a string against a regular expression.

Script

    <script>
      var str = "Hello, codemen. How are you?";
      console.log((str.match(/y/g) || []).length);
    </script>

Result:

1

Method 2: Using Split

The split() method divides a String into an ordered list of substrings, puts these substrings into an array, and returns the array. After that we find the lenght of array and minus 1. 

    <script>

      var str = "Hello, codemen. How are you?";
      
      console.log((str.split("o").length - 1));
     
    </script>

Result:

4