Prototype - Enumerable eachSlice() Method

This method groups the items in chunks based on a given size, with last chunk being possibly smaller.

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.

Syntax

Iterator.eachSlice([context]);

Return Value

Returns array of slices ( arrays ).

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         var students = [
            { name: 'Sunny', age: 20 },  { name: 'Audrey', age: 21 },
            { name: 'Matt', age: 20 },   { name: 'Lodie', age: 26 },
            { name: 'Will', age: 21 },   { name: 'David', age: 23 },
            { name: 'Julien', age: 22 }, { name: 'Thomas', age: 21 },
            { name: 'Serpil', age: 22 }
         ];

         function showResult() {
            alert ( students.eachSlice(4, function(toon) {
               return toon.pluck('name');
            }) );
            var arr = students.eachSlice(2).first();
               arr.each(function(s) {
               var h = $H(s);
               alert("Value : " + h.inspect());
            });
         }
      </script>
   </head>

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

Output

prototype_enumerating.htm