Untitled

<!DOCTYPE html> 
<html>
    <head>
        <title>MA Dashboard</title>
        <style type="text/css">
            #button-wrapper {
                display: flex;
            }
    
            .button {
                padding: 10px;
                margin: 8px 0 8px 0;
                width: 75px;
                background-color: #3f7cf5;
                outline: none;
                color: white;
                font-weight: bold;
                font-size: 20px;
                border: none;
                cursor: pointer;
            }

            .circle-wrap {
                margin: 150px auto;
                width: 150px;
                height: 150px;
                background: #fefcff;
                border-radius: 50%;
                border: 1px solid #cdcbd0;
            }

            .circle-wrap .circle .mask,
            .circle-wrap .circle .fill {
                width: 150px;
                height: 150px;
                position: absolute;
                border-radius: 50%;
            }

            .mask .fill {
                clip: rect(0px, 75px, 150px, 0px);
                background-color: #227ded;
            }

            .circle-wrap .circle .mask {
                clip: rect(0px, 150px, 150px, 75px);
            }

            .mask.full,
            .circle .fill {
                /* animation: fill ease-in-out 3s; */
                transform: rotate(0deg);
            }

            /*@keyframes fill{
                0% {
                    transform: rotate(0deg);
                }
                100% {
                    transform: rotate(180deg);
                }
            }*/
            
            .circle-wrap .inside-circle {
                width: 122px;
                height: 122px;
                border-radius: 50%;
                background: #d2eaf1;
                line-height: 120px;
                text-align: center;
                margin-top: 14px;
                margin-left: 14px;
                color: #1e51dc;
                position: absolute;
                z-index: 100;
                font-weight: 700;
                font-size: 2em;
            }
        </style>

    </head>
    <body>
        <h1>MA Dashboard</h1>
        <div id="button-wrapper">
            <button class="button" onclick="addMA()">+</button>
            <button class="button" onclick="subtractMA()">-</button>
        </div>
        
        <!-- <meter style="height:200px;" min="4" max="20" low="7" high="15" optimum="8" value="4"></meter> -->

        <!-- <div id="output">4 mA</div> -->

        <div class="circle-wrap">
            <div class="circle">
                <div class="mask full">
                    <div class="fill"></div>
                </div>
                
                <div class="mask half">
                    <div class="fill"></div>
                </div>
                <!---->
                <div class="inside-circle" id="output"> 4 mA </div>
            </div>
        </div>
        
        <script type="text/javascript">
            //let mA, degreeTotal;
            let mA = 4;
            let span = 16;
            let degreeTotal = 180;
            let saveData = 0;

            //dataDegree = (mA-4)/span*degreeTotal;

            const outputText = document.getElementById("output");
            const meterElem = document.querySelector('meter');
            //const circularProgress = document.getElementById("elemen-meter"); 
            const maskFull = document.querySelectorAll(".mask.full, .circle .fill"); 
            //const circleFill = document.querySelector(".circle .fill");
            
            function addMA() {
                if (mA < 20) {
                    mA++; 
                    dataDegree = (mA-4)/span*degreeTotal;
                    minus = dataDegree - dataDegree;
                    //saveData = saveData + dataDegree;
                    outputText.innerHTML = mA + " mA";
                    //maskFull.style.transform = ("rotate(" + dataDegree + "deg)");
                    [].forEach.call(maskFull, function(element) {element.style.transform = ("rotate(" + dataDegree + "deg)")});
                    //circleFill.style.transform = ("rotate(" + dataDegree + "deg)");
                }
            }
  
            function subtractMA(){
                if(mA > 4){
                    mA--;
                    dataDegree = (mA-4)/span*degreeTotal;
                    outputText.innerHTML = mA + " mA";
                    //maskFull.style.transform = ("rotate(" + dataDegree + "deg)");
                    [].forEach.call(maskFull, function(element) {element.style.transform = ("rotate(" + dataDegree + "deg)")});
                    //circleFill.style.transform = ("rotate(" + dataDegree + "deg)");
                }
            }
  
        </script>
    </body>
</html>
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