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Javascript count instances of character in a string

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Upset Unicorn answered on August 1, 2019 Popularity 9/10 Helpfulness 1/10

answer Javascript count instances of character in a string

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Javascript count instances of character in a string

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-1

 function countInstancesOf(letter, sentence) {
  var count = 0;

  for (var i = 0; i < sentence.length; i++) {
    if (sentence.charAt(i) === letter) {
      count += 1;
    }
  }
  return count;
}

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Source: Grepper

Tags: character count instances javascript string

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Contributed on Jun 20 2021

Upset Unicorn

0 Answers Avg Quality 2/10

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javascript count occurrences of letter in string

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function count(str, find) {
    return (str.split(find)).length - 1;
}

count("Good", "o"); // 2

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Source: stackoverflow.com

Tags: count coun

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Contributed on May 31 2021

DenverCoder1

0 Answers Avg Quality 2/10

count occurrences of character in string javascript

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var temp = "This is a string.";
var count = (temp.match(/is/g) || []).length;
console.log(count);

Output: 2

Explaination : The g in the regular expression (short for global) says to search the whole string rather than just find the first occurrence. This matches 'is' twice.

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Source: stackoverflow.com

Tags: character char

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Contributed on Mar 04 2020

Ankur

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javascript count instances in string

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function countOccurences(string, word) {
   return string.split(word).length - 1;
}
var text="We went down to the stall, then down to the river."; 
var count=countOccurences(text,"down"); // 2

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 01 2019

Grepper

0 Answers Avg Quality 2/10

javascript count occurence of character in string

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// String Prototype: myCount = myString.polycount("countThis")
String.prototype.polycount = function (criteria) {
  return this.split(criteria).length - 1 }
// Arrow Function (STR): myCount = strCount(myString, "countThis")
const strCount = (stack, find) => stack.split(find).length - 1
// Array Prototype: myCount = myArray.polycount("countThis")
Array.prototype.polycount = function (criteria) {
  return this.join("").split(criteria).length - 1 }
// Arrow Function (ARR): myCount = arrCount(myArray, "countThis")
const arrCount = (stack, find) => stack.join("").split(find).length - 1

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: character char

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Contributed on Jun 12 2022

Brian Patterson

0 Answers Avg Quality 2/10

Javascript count instances of character in a string

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