How to check if an entered value is 10 javascript?

Question

I want to check if an entered value is 10 or not(and if the value is 10, I want the result to be sent to "send.php"). What am I doing wrong?

<?php  $cod1=rand(0, 10); 
    $cod2=10-$cod1; ?>   
    <form action='send.php'  method='post' onsubmit='f1(this)'>
    Please enter the value of <br> <?php echo $cod1 ?> + <?php echo $cod2 ?> in the following box
    <input type="text" name="xrezultat" id="xrezultat" class="box" size="32"/>

    <input name="Submit1" type="submit" class="butt" value="Trimiteti">      
    <input name="Submit2" type="reset" class="butt" value="Stergeti ">

    </form>


    <Script> 
    function f1(input) 
    {    
    if(document.getElementById("xrezultat").value!=10)   
    aux==false;

     if (aux == true)
    {
       return true;
    }

       else
    {
        alert ( "Please enter the correct value" );
        return false;
                 }


    }
    </script>

Why does your function have an `input` parameter that is never used? — j08691, Oct 16 '12 at 19:37

score 2 · Answer 1 · answered Oct 16 '12 at 19:35

2

aux==false; checks to see if aux is equal to false, it does not assign to it.

It should read aux=false;.

answered Oct 16 '12 at 19:35

Snuffleupagus

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@Snuffleupageus Thank you very much ! and can I check somehow if the entered value is numeric, not string or char? – eu loli Oct 16 '12 at 19:39
@euloli check out [this](http://stackoverflow.com/a/1830844/1090190) answer to validate numbers. – Snuffleupagus Oct 16 '12 at 19:41

score 0 · Answer 2 · answered Oct 16 '12 at 19:34

0

Try using parseInt.

var numberValue = parseInt(document.getElementById("xrezultat").value, 10);

answered Oct 16 '12 at 19:34

Daniel A. White

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`onsubmit='return f1(this)';` // return is missing, that matters or not ? – Riz Oct 16 '12 at 19:36
1

The string `"10"` is `==` to the int `10`. (this is not the case with `===`) – Snuffleupagus Oct 16 '12 at 19:37
@Dev the problem was that I had 2 x "=" not only one as I should. It doesn't matter if I have return or not ... – eu loli Oct 16 '12 at 19:42

How to check if an entered value is 10 javascript?

2 Answers2