Web Color Picker

Because the default HTML color picker isn't that great.
Full HEX, RGB, HSL and HSV support

You can test it here

How to use it ?

To use this color picker, just include the following line in your html document :

    <script src="https://mizkyosia.github.io/ColorPicker/colorPicker.js"></script>

The script will add the necessary HTML Elements and styling for the picker to properly work. You can then create a new ColorPicker instance like this :

    const colorPicker = new ColorPicker();

You can create as much ColorPicker instances as you want on a single HTML page.
I... Don't really know why you'd need more than one for your web page, but... You do you I guess ?

Code help

Color-changing methods

You can change the picker's color values by code with these methods. Example :

    /* This will change the R value without updating visuals and converting to other color formats */
    colorPicker.changeR(255);

    /* This will change the G value, update visuals and convert to other color formats */
    colorPicker.changeG(125,true);

When you need to change multiple values at once, only update visuals in the last instruction. This'll save computing power and thus, time. Example :

    colorPicker.changeR(125);
    colorPicker.changeG(175);
    colorPicker.changeB(255,true);

Keep in mind that unless you use the optional updateColor parameter when calling a changer method, the updated values won't be converted to the other color systems.

Color values

List of color values. Changing one of these values goes through calling change<value name>(value,updateColor?) :

    R
    G
    B
    A    // Alpha channel = transparency
    HEX
    H
    Sv   // S value for HSV system
    V
    Sl   // S value for HSL system
    L

R, G, B are integers in the range [0,255].
H is an integer in the range [0,360].
HEX is a string of length 3, 4, 6 or 8.
All other values are floating-point numbers in the range [0,1].

CSS Styling output

If you want to retrieve colors to use them in CSS styling, you can use the getCSSColor method. Example :

    const hexColor = colorPicker.getCSSColor("HEX");
    let rgbaColor = colorPicker.getCSSColor("RGB");
    var hslaColor = colorPicker.getCSSColor("HSL");

Events

The colorPicker has two events called onApply and onCancel. As their name indicates, they are fired when the apply and cancel buttons of the picker have been pressed.
The third event is called onUpdate, and is fired when the picker's color value is changed by user input (HTML page), or in a script if you call a changer method with the updateColor parameter set to true.
You can use these events in your like these examples demonstrate :

    colorPicker.onApply = () => // Some code here

    function someFunction() {
        // Some code here
    }
    colorPicker.onCancel = someFunction;

    colorPicker.onUpdate = () => {
        // More coding
    }

Utility functions

This script also includes 3 utility functions defined on the 1st level of the script, outside of the class. Thus, you can use them in any script on the same HTML page as this script.

The rect function takes one argument called e which is an HTML element. It returns the position of the top, bottom, left and right borders of the element relative to the top left corner of the page (not the viewport), as well as the width and the height of this element. All of theses values are in pixels. Example :

    var r = rect(element);

The clamp function takes three number arguments : v, min and max. It returns the value v clamped in the interval [min, max]. Examples :

    clamp(5,10,25) // Output : 10
    clamp(30,10,25) // Output : 25
    clamp(17,10,25) // Output : 17

The randomBetween function takes two number arguments : a positional argument max, and an optional argument min. If min isn't given, it is equal to 0. Returns a random number between max (excluded) and min (included). Examples :

    randomBetween(40,20) // Output : random floating-point number in range [20, 40[
    randomBetween(30) // Output : random floating-point number in range [0, 30[

TODO

TODO :

• HSL and HSV Values textboxes (like RGB & HEX)

Will MAYBE do :

• A more intuitive and classy UI
• Mobile support