JSFiddle - React, Tailwind, and code Playground

by kougiland

HTML

<ul id="color_picker">
    <li>
        <span>Red</span>
        <input type="range" value="50" id="red" name="points" min="0" onchange="r_value.value=value" max="255">
        <output id="r_value">50</output>
    </li>
    
    <li>
        <span>Green</span>
        <input type="range" value="150" id="green" name="points" min="0" onchange="g_value.value=value" max="255">
        <output id="g_value">150</output>    
    </li>
    
    <li>
        <span>Blue</span>
        <input type="range" value="250" id="blue" name="points" min="0" onchange="b_value.value=value" max="255">
        <output id="b_value">250</output>    
    </li>
    <li>
        <span>opacity</span>
        <input type="range" value="1" id="opacity" name="points" min="0" onchange="a_value.value=value" max="1">
        <output id="a_value">1</output>    
    </li>
</ul>

CSS

html, body {
    height: 300px;
    width: 100%;
    margin: 0; padding: 0;
}

li {
    margin: 20px 0;
}

li input {width: 255px;}

#color_picker {
    margin: 50px auto;
    width: 430px;
    padding: 10px 40px;
    background: rgba(0,0,0,0.2);
    border-radius: 5px;
    box-shadow: inset 0px 1px 2px 0px rgba(0,0,0,0.4);
    list-style: none;
}

output, span {
    height: 30px;
    width: 80px;
    background: rgba(255,255,255,0.5);
    padding: 6px 12px;
    font-size: 12px;
    text-align: center;    
    border-radius: 5px;
    font-family:  Arial, sans-serif;
    position: relative;
    top: -7px;
    margin-left: 20px;
}

span {
    margin-left: 0;
    width: 50px;
    margin-right: 20px;
    height: 16px;
    display: inline-block;
}

JavaScript

(function() {
    function colorPicker() {
        
        var red = document.getElementById('red').value;
        var green = document.getElementById('green').value;
        var blue = document.getElementById('blue').value;
        var opacity = document.getElementById('opacity').value;
        
        document.getElementById('color_picker').style.backgroundColor = 'rgba('+red+', '+green+', '+blue+', '+opacity+')';
    }
    colorPicker();
    
    var input_list = $('#color_picker');
    
    for (var i = 0; i < input_list.length; i++) {
        input_list[i]
            .addEventListener('change', colorPicker, false);
    }
})();