Nodejs Array Index indexOfSelect(filter)

Method Source Code

Array.prototype.indexOfSelect = function(filter)
{
   for (var i = 0; i< this.length; i++) {
      if(filter(this[i])){
         return i;
      }// www . ja  v a  2s  .c om
    }
   return -1;
}

Related

1. 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;
   

2. 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;
   };
   

3. 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;
   };
   

4. 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;
   

5. 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;
   };
   

6. 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;
   };