Nodejs Array Index indexOfObject(prop, val)

Method Source Code

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 {/* w  ww .j  a v a  2s  . c  o  m*/
               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;
};

Related

1. indexOfLeastGreaterThan(val)

   Array.prototype.indexOfLeastGreaterThan = function(val) {
     var minIndex = 0;  
     var minDist = Number.MAX_VALUE;
     for (var i = 0; i < this.length; i++) {
       if ((this[i] >= val) && (Math.abs(this[i] - val) < minDist)) {
         minDist = Math.abs(this[i] - val);
         minIndex = i;
     return minIndex;
   

2. indexOfMatchFunction(func)

   Array.prototype.indexOfMatchFunction = function(func) {
       "use strict";
       for (var i in this) {
           if (!this.hasOwnProperty(i))
               continue;
           var element = this[i];
           if (func(element))
               return parseInt(i);
       return -1;
   };
   

3. indexOfObject(key, value)

   Array.prototype.indexOfObject = function(key, value)
       if(this.length == 0 ) return -1;
       for( var i = 0; i < this.length; i++)
           if(this[i][key] == value)
               return i;
       return -1;
   };
   

4. indexOfObject(myArray, searchTerm, property)

   Array.prototype.indexOfObject = function (myArray, searchTerm, property) {
       for(var i = 0, len = myArray.length; i < len; i++) {
           if (myArray[i][property] === searchTerm) 
           return i;
       return -1;
   

5. 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;
   };
   

6. 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;
   

7. 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;
   };
   

8. indexOfSelect(filter)

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

9. indexOfSmallestindexOfSmallest(k)

   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;
   };