Follow

Keep Up to Date with the Most Important News

By pressing the Subscribe button, you confirm that you have read and are agreeing to our Privacy Policy and Terms of Use
Contact

JS output is NaN

Can someone help me with this? I’m new with javascript.

let x1 = parseInt(document.getElementById("x1").value)
let x2 = parseInt(document.getElementById("x2").value)
word = function(){
    let c = x1+x2
    document.getElementById("res").innerHTML=c
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Calculator</title>
    <link rel="stylesheet" href="../css/style.css">
</head>
<body>
    <h1 class="text-4xl">Calculator</h1><br>
    <div>
        <form action="GET">
            <label for="x1">Input 1</label><br>
            <input type="text" id="x1" placeholder="1-10.."
            class="border-2 border-black"><br>
            <label for="x2">Input 2</label><br>
            <input type="text" id="x2" placeholder="1-10.."
            class="border-2 border-black"><br>
        </form>
        <button type="button" id="btn"
        class="rounded-lg bg-gray-500 p-1 px-2 my-2 text-white
        hover:bg-gray-600"
        onclick="word()">Test</button>
        <p id="res"></p>
    </div>
    <script src="../js/config.js"></script>
</body>
</html>

So i want to sum x1 with x2, but the output is NaN.

Here is the code in html look like
html page

MEDevel.com: Open-source for Healthcare and Education

Collecting and validating open-source software for healthcare, education, enterprise, development, medical imaging, medical records, and digital pathology.

Visit Medevel

>Solution :

Just putting the value inside your function.

let x1 = document.getElementById("x1")
let x2 = document.getElementById("x2")
word = function(){
    console.log(x1.value);

    let c = parseInt(x1.value)+ parseInt(x2.value)
    document.getElementById("res").innerHTML= +c
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Calculator</title>
    <link rel="stylesheet" href="../css/style.css">
</head>
<body>
    <h1 class="text-4xl">Calculator</h1><br>
    <div>
        <form action="GET">
            <label for="x1">Input 1</label><br>
            <input type="text" id="x1" placeholder="1-10.."
            class="border-2 border-black"><br>
            <label for="x2">Input 2</label><br>
            <input type="text" id="x2" placeholder="1-10.."
            class="border-2 border-black"><br>
        </form>
        <button type="button" id="btn"
        class="rounded-lg bg-gray-500 p-1 px-2 my-2 text-white
        hover:bg-gray-600"
        onclick="word()">Test</button>
        <p id="res"></p>
    </div>
    <script src="../js/config.js"></script>
</body>
</html>
Add a comment

Leave a Reply

Keep Up to Date with the Most Important News

By pressing the Subscribe button, you confirm that you have read and are agreeing to our Privacy Policy and Terms of Use

Discover more from Dev solutions

Subscribe now to keep reading and get access to the full archive.

Continue reading