Nodejs Array Index indexOfSmallestindexOfSmallest(k)

Method Source Code

/**//from   ww w .  j a v a2 s.  co m
 * Find the index of the smallest element in an  array
 */

Array.prototype.indexOfSmallest = function indexOfSmallest(k) {
  let lowest = 0;
  const a = this;

  for (let i = 1; i < a.length; i++) {
    if (k) {
      if (a[i][k] < a[lowest][k]) lowest = i;
    } else {
      if (a[i] < a[lowest]) lowest = i;
    }
  }
  return lowest;
};

Related

1. indexOfObject(obj)

   Array.prototype.indexOfObject = function(obj) {
     for ( var i = 0, len = this.length; i < len; i++) {
       if (angular.equals(this[i], obj))
         return i;
     return -1;
   };
   

2. indexOfObject(prop, val)

   Array.prototype.indexOfObject = function(prop, val) {
     function traverseObject(obj) {
       if(typeof(obj) === 'object') {
         for(var e in obj) {
           if(obj[prop] == val) {
             return true;
           } else {
             return traverseObject(obj[e]);
       return false;
     for(var i = 0; i < this.length; i++) {
       if(this[i] == val) {
         return i;
       } else if(traverseObject(this[i])) {
         return i;
     return -1;
   };
   

3. indexOfObject(property, value)

   Array.prototype.indexOfObject = function(property, value) {
       for (var i = 0, len = this.length; i < len; i++) {
           if (this[i] !== null && this[i][property] === value) return i;
       return -1;
   

4. indexOfObjectIdindexOfObjectId(element)

   Array.prototype.indexOfObjectId = function indexOfObjectId(element) {
       for (var i = 0, len = this.length; i < len; i++) {
           if (this[i].equals(element)) {
               return i;
       return -1;
   };
   

5. indexOfSelect(filter)

   Array.prototype.indexOfSelect = function(filter)
     for (var i = 0; i< this.length; i++) {
       if(filter(this[i])){
         return i;
     return -1;