Nodejs Array Value oneValue()

Method Source Code

/*/*from ww  w  . j a va  2s  .  co m*/
 * Extends array object with a function to check if the array consists of the same values
 * Requirement : Array only contains integers
 **/
Array.prototype.oneValue = function()
{
    var max = this[0];
    for(el in this)
    {
        if(this[el] !== max && !isNaN(this[el]))
        {
            return false;
        }
    }
    return true;
};

Related

1. getNextValue(index)

   Array.prototype.getNextValue = function(index) {
     let nextIndex = index + 1;
     if(nextIndex < this.length) {
       return this[nextIndex];
     return null;
   

2. hasWhere(property, value)

   Array.prototype.hasWhere = function (property, value) {
       "use strict";
       for(var i = 0; i < this.length; i++) {
           if(this[i][property] === value) {
               return true;
       return false;
   };
   ...
   

3. iReduce(handler, initialValue)

   var ary = [0,1,2,3,4,5,6,7,8,9];
   var initialValue;
   Array.prototype.iReduce = function(handler, initialValue) {
     if (typeof handler !== 'function') {
       throw new Error(handler + 'is not a function!');
     var ary = this;
     var i = 0;
     var tempCurrent = initialValue;
   ...
   

4. makeArray(value){

   Array.makeArray = function(value){
     if ( !value ) return [];
     if ( typeof value == "string" ) return [value];
     return Array.prototype.slice.call(value, 0);
   };
   

5. nIndexOf(value)

   Array.prototype.nIndexOf = function(value){
       var firstIndex = 0,
           lastIndex = this.length - 1,
           middleIndex = Math.floor((lastIndex + firstIndex) / 2);
       while (this[middleIndex] != value && firstIndex < lastIndex) {
           if (value < this[middleIndex]) {
               lastIndex = middleIndex - 1;
           } else if (value > this[middleIndex]) {
               firstIndex = middleIndex + 1;
   ...
   

6. pad(minSize, val)

   Array.prototype.pad = function(minSize, val) {
       var padded = new Array();
       for (var i = 0; i < this.length; i++) {
           padded.push(this[i]);
       while (padded.length < minSize) {
           padded.push(val || null);
       return padded;
   ...
   

7. plumRemove(elemVal)

   Array.prototype.plumRemove = function(elemVal){
     var i = this.indexOf(elemVal);
     if(i>-1){
       this.splice(i, 1);
   };
   

8. query(field, operator, value)

   Array.prototype.query = function (field, operator, value) { 
       if (operator=="contains"){
           value = value.toLowerCase();
         return this.filter(function (item){
          return item[field].toLowerCase().indexOf(value) !== -1;   
       });
     else if(operator == "==") {
       return this.filter(function (item){
   ...
   

9. resize(newSize, defaultValue = 0)

   Array.prototype.resize = Array.prototype.resize || function(newSize, defaultValue = 0) {
       while (newSize > this.length) {
           this.push(defaultValue);
       this.length = newSize;
   };