Tutorials Point

  Learn Prototype
  Prototype Resources
  Selected Reading

Copyright © 2014 by tutorialspoint

  Home     References     Discussion Forums     About TP  

Prototype Enumerable select () Method

previous next AddThis Social Bookmark Button


This method returns all the elements for which the iterator returned true. This is an alias of findAll().

The optional context parameter is what the iterator function will be bound to. If used, the this keyword inside the iterator will point to the object given by the argument.



Return Value :

  • Returns all the elements for which the iterator returned true.


<title>Prototype examples</title>
<script type="text/javascript" 


function showResult(){

  var arr = $R(1, 10).select(function(n) { return 0 == n % 2; });

  alert("Test 1 : " + arr.inspect() );
  // Returns [2, 4, 6, 8, 10]

  var arr = [ 'world', 'this', 'is', 'nice'].select(function(s) {
     return s.length >= 5;
  alert("Test 2 : " + arr.inspect() );
  // Returns ['world']



  <p>Click the button to see the result.</p>
  <br />
  <br />
  <input type="button" value="Result" onclick="showResult();"/>


To understand it in better way you can Try it yourself.

previous next Printer Friendly