Nodejs Array Value allValuesSame()

Method Source Code

//initialize variables
var canvas = {};/*from w w w . ja  v a  2 s . c  o m*/

//make a prototype to be used in script.js
Array.prototype.allValuesSame = function() {
  for(var i = 1; i < this.length; i++) {
      if(this[i] !== this[0])
          return false;
  }
  return true;
}

Related

1. aggregate(initialValue, aggregateItemCallback)

   Array.prototype.aggregate = function (initialValue, aggregateItemCallback) {
     var result = initialValue; 
     this.each(function (item) {
       result = aggregateItemCallback(result, item);
     })
     return result;
   

2. allValuesSame()

   Array.prototype.allValuesSame = function() {
       for(var i = 1; i < this.length; i++)
           if(this[i] !== this[0])
               return false;
       return true;
   

3. allValuesSame()

   Array.prototype.allValuesSame = function() {
     for(var i = 1; i < this.length; i++)
       if(this[i] !== this[0])
         return false;
     return true;
   

4. byField(field, value)

   Array.prototype.byField = function(field, value) {
     return this.filter(function ( obj ) {
       return obj[field] == value;
     })[0]
   

5. defaultIfEmpty(val)

   Array.prototype.defaultIfEmpty = function (val) {
     return this.length == 0 ? [val == null ? null : val] : this;
   };
   

6. elementWithAttr(attr, value)

   Array.prototype.elementWithAttr = function (attr, value) {
       for(var i = 0; i < this.length; i += 1) {
           if(this[i][attr] === value) {
               return this[i];
       return null;
   };
   

7. first(attribut, value)

   Array.prototype.first = function (attribut, value) {
       for (var i = 0; i < this.length; i++) {
           if (this[i][attribut] == value)
               return this.slice(i, i + 1)[0];
       return null;
   };