Nodejs String Count countAll(letter)

Method Source Code

String.prototype.countAll = function (letter) {
  var letterCount = 0

  for (var i = 0; i < this.length; i++) {
    if (this.charAt(i).toUpperCase() == letter.toUpperCase()){
      letterCount++//from w w w .j  a  v  a  2s.c  om
    }
  }

  return letterCount
}

var sen = 'Come on, get up and fight'

console.log(sen.countAll('o'))

Related

1. count(c)

   String.prototype.count = function(c) {
     var count = 0;
     for(var i = 0; i < this.length; i += 1) {
       if(this[i] === c) { count += 1; }
     return count;
   };
   

2. count(c)

   String.prototype.count=function(c) { 
     var result = 0, i = 0;
     for(i;i<this.length;i++)if(this[i]==c)result++;
     return result;
   };
   function commonCharacterCount(s1, s2) {
       var chars = [];
       var total = 0;
       for(var i = 0; i < s1.length; i++){
   ...
   

3. count(s1)

   String.prototype.count=function(s1) {   
       return (this.length - this.replace(new RegExp(s1,"g"), '').length) / s1.length;  
   

4. count(s1)

   String.prototype.count=function(s1) { 
       return (this.length - this.replace(new RegExp(s1,"g"), '').length) / s1.length;
   String.prototype.trunc = String.prototype.trunc ||
   function(n){
     return this.length>n ? this.substr(0,n-1)+'...' : this;
   };
   Array.prototype.remove = function(from, to) {
     var rest = this.slice((to || from) + 1 || this.length);
   ...
   

5. count(string)

   String.prototype.count = function(string) {
     return this.split(string).length - 1;
   };