jQuery countTo Plugin

jQuery countTo is a jQuery plugin that will count up (or down) to a target number at a specified speed, rendered within an HTML DOM element.

Requirements:

jQuery countTo requires the latest version of jQuery.

Usage:

There are two main approaches to using this plugin: through data attributes on DOM nodes, and through JS options explicitly passed to the countTo function.

These two methods can be mixed and matched as well. Data attributes takes precedence over JS options.

Data Attributes

This approach allows you to define data-* attributes on whatever DOM element will act as a container for your counter. This is useful when you already know the values at the time that you are constructing the DOM.

<span class="timer" data-from="25" data-to="75"></span>

<script type="text/javascript"><!--
    $('.timer').countTo();
//--></script>

A more detailed example that demonstrates all possible options being used is as follows.

<span class="timer" data-from="0" data-to="100"
      data-speed="5000" data-refresh-interval="50"></span>

<script type="text/javascript"><!--
    $('.timer').countTo();
//--></script>

Refer to the Options section below for more info on the various options available.

JavaScript Options

This approach allows you to pass values to the countTo function. This is useful when you don't know the values at the time the DOM is being rendered.

<span class="timer"></span>

<script type="text/javascript"><!--
    $('.timer').countTo({from: 0, to: 500});
//--></script>

A more detailed example that demonstrates all possible options being used is as follows.

<span class="timer"></span>

<script type="text/javascript"><!--
    $('.timer').countTo({
        from: 50,
        to: 2500,
        speed: 1000,
        refreshInterval: 50,
        formatter: function (value, options) {
            return value.toFixed(options.decimals);
        },
        onUpdate: function (value) {
            console.debug(this);
        },
        onComplete: function (value) {
            console.debug(this);
        }
    });
//--></script>

Refer to the Options section below for more info on the various options available.

Options:

A complete listing of the options that can be passed to the countTo method is below.

Option	Data Attribute	Description
from	data-from	The number to start counting from. (default: 0)
to	data-to	The number to stop counting at. (default: 100)
speed	data-speed	The number of milliseconds it should take to finish counting. (default: 1000)
refreshInterval	data-refresh-interval	The number of milliseconds to wait between refreshing the counter. (default: 100)
formatter (value, options)		A handler that is used to format the current value before rendering to the DOM. The true current value and options set is passed to the function, and it is run in the context of the DOM element. It must return the formatted value. (default: `value.toFixed(options.decimal)`)
onUpdate (value)		A callback function that is triggered for every iteration that the counter updates. The currently rendered value is passed to the function, and it is called in the context of the DOM element. (default: null)
onComplete (value)		A callback function that is triggered when counting finishes. The final rendered value is passed to the function, and it is called in the context of the DOM element. (default: null)

Created By:

Matt Huggins

License:

jQuery-countTo is released under the MIT license.

License

merian/jquery-countTo

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