Nodejs Array Select select(filter)

Method Source Code

Array.prototype.select = function(filter)
{
   var newArr = []
   for (var i = 0; i< this.length; i++) {
      if(filter(this[i])){
         newArr.push(this[i]);//from www . j a  v  a2  s .com
      }
    }
   return newArr;
}

Related

1. select(f)

   Array.prototype.select = function(f){
     var newArray = [];
     var temp = '';
     for(var i = 0; i < this.length; i++){
        temp = f(this[i]);
         if(temp != null || temp!= undefined){
             newArray.push(temp);
     return newArray;
   };
   

2. select(fields)

   Array.prototype.select = function (fields) {
       return this.map(function (i) {
           var res = {};
           fields.forEach(function (f) {
               res[f] = i[f];
           });
           return res;
       });
   };
   ...
   

3. select(fnCallback)

   Array.prototype.select = function(fnCallback) {
       var value = Array();
       for (var elementIndex in this) {
           if (this.hasOwnProperty(elementIndex)) {
               value.push(fnCallback.apply(this[elementIndex], [elementIndex]));
       return value;
   };
   ...
   

4. select(fun)

   Array.prototype.select = function(fun) {
     return this.reduce(function(res, el) {
       if(fun(el)) {
         res.push(el);
       };
       return res;
     }, []);
   

5. select(func)

   Array.prototype.select = function (func) {
       var length = this.length,
           items = [];
       for (var i = 0; i < length; i++) {
           items.push(func(this[i]));
       return items;
   

6. select(lambda)

   Array.prototype.select = function(lambda) {
       if (lambda == undefined) {
           return this;
       } else {
           result = [];
           for (i = 0; i < this.length; i++) {
               if (lambda(this[i])) {
                   result.push(this[i]);
           return result;
   };