mytry.github.io/variables.html at main · nirajmehariya/mytry.github.io · GitHub

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<!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>variables</title>
    <script>
        function hello()
        {
            alert("1")
            var x=document.getElementById('demo');
            if (x.CheckValidity())
              {
                document.getElementById('demo1').innerHTML="validate";
              }
            else
              {
                document.getElementById('demo1').innerHTML= x.validationmessage;
              }
        }
    </script>
</head>
<body>
    <p Id="d1"></p>
    <script>
         var x=5;
         var y=4;
         var z=x+y;
         document.getElementById('d1').innerHTML="Addition is"+z;
         document.write="Hello";
    </script>
    <input type="number" id="demo" min="100" max="200" >
    <input type="button" value="click" onclick="hello()">
    <p Id="demo1"></p>


</body>
</html>