- Prototype Tutorial
- Prototype - Home
- Prototype - Short Overview
- Prototype - Useful Features
- Prototype - Utility Methods
- Prototype - Element Object
- Prototype - Number Processing
- Prototype - Strings Processing
- Prototype - Array Processing
- Prototype - Hash processing
- Prototype - Basic Object
- Prototype - Templating
- Prototype - Enumerating
- Prototype - Event Handling
- Prototype - Form Management
- Prototype - JSON Support
- Prototype - AJAX Support
- Prototype - Expressing Ranges
- Prototype - Periodical Execution
- Prototype Useful Resources
- Prototype - Quick Guide
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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
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