Nodejs Array Take takeWhile(fun)

Method Source Code

Array.prototype.takeWhile = function (fun) {
    var result = new Array(), index = 0;
    while (fun(this[index])) {
        result.push(this[index++]);/*from  www.  ja v a  2s.c o  m*/
    }
    return result;
};

Related

1. take(length)

   Array.prototype.take = function (length) {
     var result = new Array();
     length = Math.min(this.length, length);
     for (var i = 0; i < length; i++)
       result.push(this[i]);
     return result;
   };
   

2. take(n)

   Array.prototype.take = function (n) {
     return this.splice(0, n);
   };
   

3. take(x)

   Array.prototype.take = function(x){
     return this.slice(0,x)
   

4. takeSample()

   Array.prototype.takeSample = function () {
       var n = Math.round((Math.random() * (this.length - 1)));
       return this[n];
   };
   

5. takeUntil(fun)

   Array.prototype.takeUntil = function (fun) {
       var result = new Array(), index = 0;
       while (!fun(this[index])) {
           result.push(this[index++]);
       return result;
   };
   

6. takeWhile(predicate)

   Array.prototype.takeWhile = function (predicate) {
     predicate = predicate || Predicate;
     var l = this.length;
     var arr = [];
     for (var i = 0; i < l && predicate(this[i], i) === true ; i++)
       arr.push(this[i]);
     return arr;
   };