Nodejs Array Last last(value)

Method Source Code

Array.prototype.last = function(value) {
   /*from   w  ww  .  j  a v  a2s . c  om*/
   if (this.length) {
      
      var last = this[this.length-1];
      
      if (value != undefined)
         return (value == last) ? true : false;
      else   
         return last;
   }
   
   return '';

};

Related

1. last(n)

   Array.prototype.last = function(n) {
     if (this.length == 0 || n < 0) return void 0;
     if (n == undefined) return this[this.length - 1];
     if (n == 0) return [];
     return this.rest(this.length - n);
   };
   

2. last(num)

   Array.prototype.last = function (num) {
      if (num !== undefined) {
         return this.slice(-num);
      return this[this.length - 1];
   };
   

3. last(predicate, def)

   Array.prototype.last = function (predicate, def) {
     var l = this.length;
     if (!predicate) return l ? this[l - 1] : def == null ? null : def;
     while (l-- > 0){
       if (predicate(this[l], l, this))
         return this[l];
     return def == null ? null : def;
   };
   ...
   

4. last(t)

   Array.prototype.last = function(t) {
     if (t !== undefined) {
       this[this.length - 1] = t;
     } else {
       return this[this.length - 1];
   

5. last(value)

   Array.prototype.last = function(value) {
     if (this.length) {
       var last = this[this.length-1];
       if (value != undefined)
         return (value == last) ? true : false;
       else  
         return last;
     return '';
   ...
   

6. last100()

   Array.prototype.last100 = function () {
       if (this.length < 100) return this;
       var last100 = [];
       var start = this.length-101;
       for (var i = 0; i < 100; i++)
         last100.push(this[i + start]);
       return last100;