TagCloud jQuery plugin

A dynamic JavaScript tag/keyword cloud plugin for jQuery, designed to use with Ajax: the cloud is generated from an array.

MIT license.

• Original: Schaffer Krisztián: http://woophoo.com
• Updated: Tim Groeneveld: http://timg.ws

Usage:

Basic Usage example.

Call it on a jQuery object created from one element and pass an array of objects with "tag" and "count" attributes.

    var tags = [
    {
        tag: "computers",
        count: 56
    }, {
        tag: "mobile",
        count :12
    }, ... ];

    $("#tagcloud").tagCloud(tags);

Advanced usage example

Similar to the Basic Usage, you could perform an AJAX request, and with the response, then build a tag cloud.

    $.ajax('http://example.org/the-tagcloud/').done(function(response)) {
        $("#tagcloud").tagCloud(response.tags, {
            click: function(tag, e) {
                alert("You just clicked on: " + tag);
            },
            min: response.min,
            max: response.max
        });
    });

In this example, min & max are calculated inside the JSON data.

Configuration:

You can pass a configuration object to tagCloud as the second parameter.

Configuration Settings:

Allowed settings are:

• sort: Comparator function used for sort the tags before displaying, or false if no sorting needed.

default: sort by tag text using

      function (a, b) {return a.tag < b.tag ? -1 : (a.tag == b.tag ? 0 : 1)

• click: Event handler which receives the tag name as first parameter and the original click event as second. The preventDefault() is called on event before passing so don't bother.

default: does nothing:

      function(tag, event) {}

• maxFontSizeEm: Size of the largest tag in the cloud in css 'em'. The smallest one's size is 1em so this value is the ratio of the smallest and largest sizes.

default: 4

• template: The template that is used to generate a link. Allows different variables.

• tag: The tag provided in the tags object

• count: The number of times that the tag appears

• size: The relative size of the tag (in em)

• data: object containing data that should be added to all of the links.

Default link template

<a href="{href}" class="tagcloudlink" style="font-size: {size}em">{tag}</a>

Styling:

By default, the plugin adds the "tagcloudlink" class to the generated tag links. Note that an " " is generated between the links too. You can change the style by modifying the template that is used to generate the links.

Originally based on DynaCloud v3 by Johann Burkard http://johannburkard.de mailto:jb@eaio.com

CHANGES:

• 9 march 2015 (Tim Groeneveld)
• Prepare repository for adding to jQuery Plugin Repository
• 16 july 2014 (Tim Groeneveld)
• Allow the link layout to be changed with the "template" option.
• 15 july 2014 (Tim Groeneveld)
• Add the ability to set max & min and not have tag cloud calculate values.
• Improved documentation a little.
• 05 sept. 2008 (Schaffer Krisztián)
• Improved normalization algorithm - better looking font sizes
• New settings: click, maxFontSizeEm
• Documentation
• 04 sept. 2008 (Schaffer Krisztián)
• Initial version