atozprogramming.github.io/CustomCalculator.html at master · atozprogramming/atozprogramming.github.io · GitHub

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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- this is the code that will allow icon to be visible in the title bar of the brower -->
<link rel="icon" type="image/ico" href="WebsiteLogo2.png" />
<!-- you can also say this:  <link rel="icon" type="image/png" href="location/image.png" /> -->

<title>Custom Calculator</title>
<style>
    body {
        background-color: #E5E4E2;
    }

    input[type=text] {
        background-color: rgb(224, 235, 78);
        color: white;
        border: 2px solid #cccccc;
        width: 30px
    }

    input[type=text]:focus {
        background-color: rgb(241, 241, 204);
    }

    button {
        background-color: #bbb;
        padding: .2em;
        margin-left: 1em;
        -moz-border-radius: 5px;
        -webkit-border-radius: 5px;
        border-radius: 10px;
        color: #fff;
        font-family: 'Consolas';
        /*Oswald is a great font*/
        text-decoration: none;
        border: none;
        font-size: 20px;
    }

    button:hover {
        background-color: rgb(172, 122, 15);
    }
</style>

<body>
    <input type="text" id="QuadA" value="0">x^2 + <input type="text" id="QuadB" value="0">x + <input type="text"
        id="QuadC" value="0">c = 0
    <p id="answer"></p>
    <button id="calc" onclick="solve();">Calculate X</button>
    <script>
        function solve(){
            solveQuad();
        }
        function solveQuad(){
            let a = 1;
            let b = 4;
            let c = 3;
            console.log(a);
            let answer1 = 0;
            let answer2 = 0;
            let placeHolder = 0;
            if(a != (undefined || NaN) &&  b != (undefined || NaN) && c != (undefined || NaN)){
                answer1 = Number( (-b + Math.sqrt((b * b) - (4 * a * c))) / (2 * a) );
                answer2 = Number( (-b - Math.sqrt((b * b) - (4 * a * c))) / (2 * a) );
                document.getElementById("answer").textContent = `x is equal to ${answer1} and/or ${answer2}`;
            } else {
                let answer1 = "Type real numbers!";
            }
        }
    </script>
</body>

</html>