Nodejs Array Include includes(value)

Method Source Code

Array.prototype.includes = function(value) {
  for (var i=0; i < this.length; i++) {
    if (this[i] === value) {
      return true;
    }//ww w.j  ava 2 s. c  om
  }

  return false;
}



Array.prototype.myUniq = function() {
  var container = [];
  for (var i=0; i < this.length; i++) {
    if (!(container.includes(this[i]))) {
      container.push(this[i]);
    }
  };
  return container;
};

Array.prototype.twoSum = function() {
  var container = [];
  for (var i=0; i < this.length - 1; i++) {
    for (var j=i+1; j < this.length; j++) {
      if (this[i] + this[j] === 0) {
        container.push([i,j]);
      }
    };
  };

  return container;
};

Array.prototype.transpose = function() {
  var container = new Array(this.length) ;
  for (var i=0; i < container.length; i++) {
    container[i] = new Array(this.length);
  };

  for (var i=0; i < this.length; i++) {
    for (var j=0; j < this.length; j++) {
      container[j][i] = this[i][j];
    };
  };
  return container;
};

Related

1. includes(val)

   Array.prototype.includes = function (val) {
     var returnValue = false;
     this.forEach(function (el, i){
       if (val === el) {
         returnValue = true;
     });
     return returnValue;
   };
   ...
   

2. includes(val)

   var bubbleSort = function (arr) {
     var notSorted = true
     while (notSorted) {
       notSorted = false;
       for (var i = 0; i <= arr.length-2; i++) {
         var j = i+1;
         if (arr[j] < arr[i]) {
           var temp = arr[j];
           arr[j] = arr[i];
   ...
   

3. includes(val, from)

   Array.prototype.includes = function(val, from) {
       return this.indexOf(val, from) !== -1;
   

4. includes(value)

   window.IS_ELECTRON = window.process ? true : false
   if (!window.IS_ELECTRON)
     window.require = () => ({})
   Array.prototype.includes = function(value) {
     return this.some(element => element === value)
   

5. includes(value)

   Array.prototype.includes = function(value) {
       return jQuery.inArray(value, this) > -1;