Advanced form elements customization using CSS/JS
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Latest commit d002e9f Sep 5, 2017

README.md

JCF - JavaScript Custom Forms

This library allows crossbrowser customization of form elements using CSS.

Check live demo.

Browser support

The script was tested in the following browsers:

  • Internet Explorer 8+
  • Firefox
  • Chrome
  • Safari
  • Opera
  • Windows 8+ Touch desktops
  • Windows Phone 8+
  • Android 4+
  • iOS7+

Installation

Install using npm: npm install jcf

Install using Bower: bower install jcf

CDN: this library is available at cdnjs

Usage

The script requires jQuery 1.7+ to work properly. To add script in your page simply attach core file - jcf.js and some of modules you want to use for customization:

<script src="js/jquery.js"></script>
<script src="js/jcf.js"></script>
<script src="js/jcf.select.js"></script>
<script src="js/jcf.radio.js"></script>
<script src="js/jcf.checkbox.js"></script>

When the page is loaded all you have to do is simply call function:

$(function() {
	jcf.replaceAll();
});

Please note that JCF does not replace original form elements with own components. It just creates additional DOM nodes to support CSS styling. All DOM events are invoked on original elements and in most cases JCF could be easily turned on or off without affecting your existing event listeners.

How to use JCF with AngularJS 1.x

To use this script with Angular you still need to attach all scripts above (including jQuery) and also attach directive:

<script src="js/jcf.angular.js"></script>

When the directive is connected as dependency in your app you can add jcf attribute to the form field and such element will be customized:

<!-- customize select: -->
<select jcf>
    ...
</select>

<!-- customize range input with specific options: -->
<input type="range" jcf='{"orientation": "vertical"}'>

General API Information

Global jcf object has several methods to control custom form elements on the page:

jcf.replaceAll( [context] ) - Replace elements on the whole page. Optional argument is context to use (can be CSS selector, or DOM/jQuery object). Add class jcf-ignore on the element to prevent its customization.

jcf.replace( elements [, moduleName] [, customOptions] ) - Replace certain element or multiple elements. Returns custom form element instance. The first argument is CSS selector, or DOM/jQuery object to be customized. Second argument is optional and used to specify module which should be used for customization. By default it is false which will result module to be auto detected. Third argument is module options which can be specified with object.

jcf.destroyAll( [context] ) - Destroy all custom form elements instances and restore original form elements. Optional argument is context to use (can be CSS selector, or DOM/jQuery object).

jcf.destroy( elements ) - Destroy certain element or multiple form elements. Should be applied to native form controls.

jcf.refreshAll( [context] ) - Redraw all custom form instances. Should be used when values of form elements are modified by other scripts. Optional argument is context to use (can be CSS selector, or DOM/jQuery object).

jcf.refresh( elements ) - Refresh certain element or multiple form elements.

Getting the instance of customized form element

In any time it's possible to get instance of customized form element. Use method jcf.getInstance to do this:

var countrySelect = document.getElementById('country-select');
var customFormInstance = jcf.getInstance(countrySelect);

customFormInstance.refresh();

Setting Options

There are two ways of specifying options for modules - override module defaults and specify options per element.

// set options for Checkbox module
jcf.setOptions('Checkbox', {
	checkedClass: 'test',
	wrapNative: false
});

// replace all form elements with modified default options
jcf.replaceAll();

The second way is to specify options for certain element in HTML:

<input type="checkbox" data-jcf='{"checkedClass": "test", "wrapNative": false}'>

(Please be careful and use valid JSON)

Module Options

Each module has options. Some of options are common between modules and some are unique. The most commonly used options in modules are listed below.

Select

Option Description Data Type Default
wrapNative Wrap native select inside fake area, so that native dropdown will be shown boolean true
wrapNativeOnMobile Show native dropdown on mobile devices even if wrapNative is false boolean true
fakeDropInBody Active only when custom dropdown is used. Specifies where to append custom dropdown - in document root, or inside select area boolean true
useCustomScroll Use custom scroll inside custom dropdown if Scrollable module present boolean true
flipDropToFit Flip custom dropdown if it does not fit in viewport boolean true
maxVisibleItems How many options should be visible in dropdown before scrollbar appears number 10

Checkbox

Option Description Data Type Default
wrapNative Wrap native checkbox inside fake area for better compatibility with event handlers attached by other scripts boolean true
checkedClass Specify class which will be added to fake area when checkbox is checked string "jcf-checked"
labelActiveClass Specify class which will be added to corresponding <label> when checkbox is checked string "jcf-label-active"

Radio

Option Description Data Type Default
wrapNative Wrap native radio inside fake area for better compatibility with event handlers attached by other scripts boolean true
checkedClass Specify class which will be added to fake area when radio is checked string "jcf-checked"
labelActiveClass Specify class which will be added to corresponding <label> when radio is checked string "jcf-label-active"

Number input

Option Description Data Type Default
pressInterval Specify the interval which will control how fast the value is changing while the buttons are pressed. number 150
disabledClass Specify class which will be added to arrow buttons when maximum or minimum number is reached string "jcf-disabled"

Range input

Option Description Data Type Default
orientation Specify range input orientation: "horizontal" or "vertical" string horizontal
range Show range indicator. By default indicator will be shown only for inputs with multiple handles. Possible values are: "min", "max", "all" string "auto"
minRange Works only when multiple slider handles are used. Sets the minimum range value that can be selected between the two handles number 0
dragHandleCenter Enable this option to make the cursor stick to the center of the input handle boolean true
snapToMarks Snap input handle to HTML5 datalist marks boolean true
snapRadius Specify snapping radius in pixels number 5

File

Option Description Data Type Default
buttonText Specify default text for upload button (its better to specify this option from HTML for proper localization). string "Choose file"
placeholderText Specify default text for input when no file is selected (its better to specify this option from HTML for proper localization) string "No file chosen"

Scrollable

Option Description Data Type Default
handleResize Handle resize events so that scrollable area will be responsive boolean true
alwaysShowScrollbars Always show scrollbars event if they cant scroll anything boolean false
alwaysPreventMouseWheel Always prevent mouse wheel scrolling when its used over scrollable element. This way page wont be scrolled even if scrollable area is at the scrolled to the top/bottom. boolean false

Textarea

Apply custom scrollbar on <textarea> (Works only when Scrollable module is available).

Option Description Data Type Default
resize Add resize grip to <textarea> boolean true

License

This script is licensed under the MIT License.

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