Nodejs Array Item Occurrence numberOfOccurrences(chr)

Here you can find the source of numberOfOccurrences(chr)

Method Source Code

Array.prototype.numberOfOccurrences = function(chr) {
  return this.filter(function(x){ return x == chr; }).length;
}

Related

  1. numberOfOccurrences( arg )
    Array.prototype.numberOfOccurrences = function( arg ) {
      var num = 0;
      this.forEach( function( e ){
        if ( arg === e ) { num++; }
      });
      return num;
    };
    var arr = [0,1,2,2,3,"a"];
    console.log( arr.numberOfOccurrences("a") );
    ...
    
  2. numberOfOccurrences(arr)
    Array.prototype.numberOfOccurrences = function (arr) {
        var elem = 0;
        for (var i = 0; i < this.length; i++) {
            if (this[i] === arr) {
                elem++;
        return elem;
    };
    ...
    
  3. numberOfOccurrences(desVal)
    Array.prototype.numberOfOccurrences = function(desVal) {
      var counter = 0;
      this.forEach(function(value){
        if(value === desVal){
          counter++;
      });
      return counter;
    };
    ...
    
  4. numberOfOccurrences(el)
    Array.prototype.numberOfOccurrences = function (el) {
      var count = 0;
      this.forEach(function (item) {
        if (item === el) count++;
      });
      return count;
    
  5. numberOfOccurrences(elem)
    Array.prototype.numberOfOccurrences = function(elem) {
      let obj = {};
      this.forEach(elem => elem in obj ? obj[elem]++ : obj[elem] = 1);
      return obj[elem] === undefined ? 0 : obj[elem]
    
  6. numberOfOccurrences(i)
    Array.prototype.numberOfOccurrences = function(i) {
      var total = 0;
      this.filter(function (x) {
        if (i === x)
          total++;
      });
      return total;
    };
    var arr = [0,1,2,2,3];
    ...