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Editorial Team
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Asked: 2026-05-30T23:27:11+00:00

I am not very well in Java Script and i didn’t found a solution

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I am not very well in Java Script and i didn’t found a solution for my problem.

I have a textbox on my page where inside i am authorized to write a number between 0 and 199.

If i write 200 or >, then i want to get an alert (onblur).

I found a code who is very interesting and maybe useful.

But I don’t know if he works, because I don’t know how to implement this.

<script>
    var min = 0;
    var max = 199;
    var num = parseInt(myform.numfield.value);
    if (min > num || max < num) {
        alert(num + ' is not between ' + min + ' and ' + max);
        return false;
    }
</script>

I Hope you can help me

Here the new code who works

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="utf-8"> 
        <title>Page</title> 
        <script type="text/javascript">
            function check(min, max) {
                var num = parseInt(document.getElementById('value_one').value);
                if (min > num || max < num)
                {
                    alert(num + ' ist nicht zwischen ' + min + ' und ' + max);
                }
            }
        </script> 
    </head> 
    <body> 
        <form> 
            Zahl: <input type='text' id='value_one' onBlur="check(0, 100)" > 
        </form> 
    </body> 
</html>

I have also another question. Is it possible to add to the same function a query, where, when I write a number bigger than 99 into the same Textbox, where we have the query of MIN and MAX, to get an alert with a Message “Now we get new values”, but still when I write 200 or bigger, to get the Message like before. Is it possible? Thank you very much so late for your help. Cheers

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1 Answer

  1. Editorial Team

    I would put this code into a function, and then call it onblur:

    function check(min, max) {
    var num = parseInt(this.value);
    if (min > num || max < num) {
        alert(num + ' is not between ' + min + ' and ' + max);
    }
}

    and then

    <input type='text' onblur="check(0, 199)"
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