i need help fast.. easy question

[VietBoyVS]

<input type="text" name="box">
<input type="button" value="Add" onClick="cool()">

<script language="JavaScript">
   var blue=5;
   function cool() {
   blue=blue+1;
  
}
</script>

Hey peoople.. this is a simple question.. but i can't get it to work
If click the button, it will added 1, then assign to blue..

how do it make it show in "box" text field?
Do I use return blue=box.value;??
Help me plzz.. thank you..

[glenngv]

function cool() {
blue=blue+1; //or simply blue++
document.whateverTheFormNameIs.box.value=blue;
}

[balljilai]

Don't know what's the problem. I tried it and it works fine.
Here's how I test it:

<input type="text" name="box">
<input type="button" value="Add" onClick="cool()">
<input type="button" value="Blue Value" onClick="getblueValue()">

<script language="JavaScript">
var blue=5;
function getblueValue() {
alert(blue);
}
function cool()
{
blue=blue+1;
}

</script>

[glenngv]

The question is:

how do it make it show in "box" text field?

[VietBoyVS]

Originally posted by glenngv
function cool() {
blue=blue+1; //or simply blue++
document.whateverTheFormNameIs.box.value=blue;
}

thank you so much

[balljilai]

Try this:

<form name= fm>
<input type="text" name="box">
<input type="button" value="Add" onClick="cool()">
</form>

<script language="JavaScript">
var blue=5;
function cool() {
blue=blue+1;
document.fm.box.value = blue
}
</script>

[VietBoyVS]

another quick question

for that situation.. I can set that it's click added.. and when it's reach 12.. it will stop adding.. how do I that/
using a math.min()??

[glenngv]

Originally posted by balljilai
Try this:

<form name= fm>
<input type="text" name="box">
<input type="button" value="Add" onClick="cool()">
</form>

<script language="JavaScript">
var blue=5;
function cool() {
blue=blue+1;
document.fm.box.value = blue
}
</script>

already suggested.

VietBoyVS:

function cool() {
  if (blue<12) {
     blue++;
     document.whateverTheFormNameIs.box.value=blue;
  }
}

[VietBoyVS]

thx again..