Javascript-LabAssign/Toggle.html at main · hackingwithabhishek/Javascript-LabAssign · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <textarea id="a" rows="5" cols="10" value=""></textarea>
    <input type="button" id="btn" value=">" onclick="fn()" >
    <textarea id="b" rows="5" cols="10"></textarea>
    <script>
        function fn()
        {
            var x = document.getElementById("btn").value;
            if(x == ">")
            {
                x.value = null;
                document.getElementById("btn").value = "<";
                document.getElementById("b").value = document.getElementById("a").value;
                document.getElementById("a").value = "";
            }
            if(x == "<")
            {
                x.value = null;
                document.getElementById("btn").value = ">";
                document.getElementById("a").value = document.getElementById("b").value;
                document.getElementById("b").value = "";
            }
        }
    </script>
</body>
</html>