Nodejs String Count Char countChars(c)

Method Source Code

String.prototype.countChars = function(c) {
   var cpt = 0;//from  ww  w . j a v  a2 s  . c o m
   for(var i=0;i<this.length;i++) {
      if(this.charAt(i)==c) cpt++;
   }
   return cpt;
}

var monTexte = "Je s uis un texte";
console.log(monTexte.countChars(' '));

var monTexte = "fdsqfqdf";
console.log(monTexte.countChars('f'));

Related

1. countOf(char)

   var fs = require('fs');
   String.prototype.countOf = function(char) {
     return this.split(char).length - 1;
   fs.readFile(process.argv[2], 'utf8', function(err, data) {
     if (err) {
       console.error(err);
       return;
     var lines = data.countOf('\n');
     console.log(lines);
   });
   

2. countOf(char)

   var fs = require('fs');
   String.prototype.countOf = function(char) {
     return this.split(char).length - 1;
   if (process.argv.length >= 3) {
     var buffer = fs.readFileSync(process.argv[2]);
     var str = buffer.toString();
     var count = str.countOf('\n');
     console.log(count);
   ...
   

3. countWords()

   String.prototype.countWords = function(){
     return this.split(/\s+/).length;
   'olly olly in come free'.countWords();