HC-Sticky
JavaScript library that makes any element on your page visible while you scroll. Dependency free, but lso works as a jQuery plugin. Check out the demos.
Quick start
Install
This package can be installed with:
- npm:
npm install --save hc-sticky
Or download the latest release.
Including HC-Sticky
Script tag
<script src="/path/to/hc-sticky.js"></script>Webpack/Browserify
In the script, including HC-Sticky will usually look like this:
const hcSticky = require('hc-sticky');Babel
import hcSticky from 'hc-sticky';AMD (Asynchronous Module Definition)
If using AMD, the module will be automatically defined as hcSticky.
Usage
Be sure to call HC-Sticky once your element is available in the DOM.
Vanilla JS
document.addEventListener('DOMContentLoaded', function() {
var Sticky = new hcSticky('#element', {
stickTo: '#content'
});
});jQuery
jQuery(document).ready(function($) {
$('#element').hcSticky({
stickTo: $('#content')
});
});For HC-Sticky to work as a jQuery plugin, jQuery has to be a property of global window object, so be careful when using it in compbination with Babel/Webpack/Browserify and jQuery.
Options
HC Sticky has a wide range of options you can set to have a full controll over the sticky elements.
| Property | Default | Type | Description |
|---|---|---|---|
top |
0 | int | The distance from the top of the Window at which to trigger HC-Sticky. |
bottom |
0 | int | The distance from the bottom of the Window at which to attach HC-Sticky. |
innerTop |
0 | int | The distance from the top inside of the sticky element at which to trigger HC-Sticky. |
innerSticker |
null | string / element object | Element inside of the sticky element at which to attach HC-Sticky. This has higher priority than innerTop option. |
bottomEnd |
0 | int | The distance from the bottom of the referring element at which to stop HC-Sticky. |
stickTo |
null (parent element) | string / element object | Element that represents the reference for height instead of height of the container. |
followScroll |
true | boolean | When set to false, sticky content will not move with the page if it is bigger than Window. |
stickyClass |
'sticky' | string | HTML class that will be applied to sticky element while it is attached. |
responsive |
null | object | Object containing responsive breakpoints, on which you can tell HC Sticky what to do. |
mobileFirst |
false | boolean | Direction of the responsive queries. |
disable |
false | boolean | Disable the plugin. Usualy used with responsive object. |
onStart |
null | function | Callback function fired when the element becomes attached. |
onStop |
null | function | Callback function fired when the element stops floating. |
onBeforeResize |
null | function | Callback function fired before sticky has been resized (happens after Window resize and before sticky reinit). |
onResize |
null | function | Callback function fired after sticky has been resized (happens after Window resize and sticky reinit). |
resizeDebounce |
100 | int | Limit the rate at which the HC Sticky can fire on window resize. |
More on how to use the responsive object here.
Methods
Methods are used to control the plugin after initialization.
| Method | Accepts | Description |
|---|---|---|
options |
string | Returns current settings, or a specific setting if you specify it. |
update |
object | Updates the settings with the new ones. |
refresh |
N/A | Recalculates sticky size and position. Useful after altering DOM elements inside sticky. |
detach |
N/A | Detaches the HC-Sticky from element, preventing it from running. |
attach |
N/A | Attaches the HC-Sticky back to the element. |
destroy |
N/A | Completely destroys HC-Sticky and reverts element to original state. |
Vanilla JS
var Sticky = new hcSticky('#element', {
stickTo: '#content'
});
Sticky.update({
top: 20
});jQuery
var $sticky = $('#element');
$sticky.hcSticky({
stickTo: '#content'
});
$sticky.hcSticky('update', {
top: 20
});Dev Building
This package comes with Gulp. The following tasks are available:
defaultcompiles the JS into/distand builds the Demos into/docs.watchwatches source JS and Demo files and builds them automatically whenever you save.
You can pass a --dev command if you don't want the compiled JS to be minified.
License
The code and the documentation are released under the MIT License.