Proximus design system
Important information:
Using the Design System implies following some rules: the code should be valid and same as the Design System. Meaning custom HTML & CSS override are forbidden.
Please don't forget to read Usage part of each element.


Counter is used for entering numeric values and includes controls to increase or decrease an incremental value.

last modified: 08/06/2022 11:20:04


Counter contains a text field and 2 controls used to increase or decrease an incremental value.

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  1. Default state
    State visible before click.
  2. Hover/Focused state
    State visible when the cursor hovers the control and triggered by keyboard navigation or click.
  3. Disabled state
    State visible when the minimum or maximum value is reach. The controls is than not clickable anymore.
  1. Valid state
    When given input is correct or validated. Field and user input are visible, a green mark is displayed. An optional confirmation text can be displayed underneath the input (helper text).
  2. Error message
    When given input is not correct. Field and user input are visible, a red mark and an error message are displayed to give context to the user. The helper text is mandatory. This error message should contain informations about the nature of the error, helping the user to fill the correct content.

Text fields states

To have more informations avout the text field, please refer to the text field article.


  1. Text field
    Allows users to manually enter the number value. For more info about the field, check out the text field article.
  2. Controls
    Allow users to increase or decrease value incrementally.

Set a minimum or maximum value

A minimum and maximum value must be defined. When users reach this value, disable one of the control buttons accordingly. Once the maximum value is reached, disable the + button. If the minimum value is reached, disable the - button.

Best practises

  • Do not use number inputs when large value changes are expected. They work best for making small, incremental changes that require only a few clicks.
  • Enable the user to also choose to type a number in the field.
  • Ensure that a default value is shown within the field.
last modified: 08/06/2022 11:20:04

Sizes and colors

last modified: 12/12/2022 14:40:03

Counter input requires some attributes:

  • value : the default value on load.
  • min : the minimum value.
  • max : the maximum value.
  • step : the increment/decrement value.

It also requires a <label> which can be hidden with an accessibility class like show-for-sr .
This label must repeat minimum and maximum values like in the examples below.

Counter buttons requires tabindex='-1' attribute.


All @rsCounter objects can receive all following optionnal parameters in this exact order:

Parameter Default value if nothing is set
Counter label "Counter label (between 0 and 10)" | "Negative counter label (between 0 and 10)"
(depends on default or negative version)
Input: name "counter" | "counterNeg"
(depends on default or negative version)
Input: default value 0
Input: minimum value 0
Input: maximum value 10
Input: step value 1
"Extra class for counter container" ""

How does it work

Progress bar is a webcomponent which needs data-rslib-webcomponent-load="rslib.apps.counter" attribute to work.

Default counter

Negative counter

Add rs-counter-neg class to rs-counter container.
Add rs-form-neg class to rs-counter-form .

Error state

Error message

Success state

  • Success message


Just add rs-disabled class around.


How to trigger the js

As Counter is a webcomponent, you will have to load inception.webComponentLoad(CONTEXT); first to be able to load the scripts.

Next time you add Counter to the page, you have to call this JS: inception.counter(CONTEXT);

CONTEXT refers to document or html element parent to data-counter.

last modified: 10/01/2024 14:45:11

Configuration metadata

Selector: ds-counter

Class: CounterComponent

Use case example


Name Type Default Required Description
id string undefined Yes Unique id of the component
step number 1 No The step of the counter
round 'UP' | 'DOWN' | 'NONE' 'NONE' No The rounding of the user's input
value number 0 No The starting value
min number -Infinity No The minimum value of the counter
max number Infinity No The maximum value of the counter


Name Type Description
onChange EventEmitter<number> The number after value change