Trying to clear text field on checkbox unchecked

[Pirellio]

Ok a person clicks on the check box the text field populates with a number 1

I want it to clear if they uncheck the text box now but can't

Here is the code - see function Quantity1()

<script language="javascript">
function OnlyNumbers1() {
document.theFood.qty1.value=filterNum(document.theFood.qty1.value)
function filterNum(str) {
re = /[^0-9\.]+/g;
// remove special characters like "$" and "," etc...
return str.replace(re, "");
}}
function Quantity1() {
if (document.theFood.qty1.checked) {
document.theFood.qty1.value=filterNum(document.theFood.qty1.value)
function filterNum(str) {
re = /[^A-Z\.]+/g;
// remove special characters like "$" and "," etc...
return str.replace(re, "");
} }
if (!document.theFood.qty1.checked) {
document.theFood.qty1.value = 1;
} }
</script>

<tr><td>Regular Box - $20.00</td><td> <input name="RegularBox" id="RegularBox" type="checkbox" value="RegularBox" onclick="Quantity1();" /> - QTY - <input name="qty1" id="qty1" type="text" maxlength="2" size="2" onkeyup="OnlyNumbers1();" /></td></tr>

 

[Ascalonian]

As far as I see it from your code, you have the check box AND the text box with the same name. You can't do that...

<input type="checkbox" id="someCheckbox" name="someCheckbox" onclick="quantityOne();"/>
<input type="text" id="qty1" name="qty1" />

function filterNum(inStr){
 e = /[^A-Z\.]+/g;
 // remove special characters like "$" and "," etc...
 return inStr.replace(re, "");
}

function quantityOne() {
  var checkbox = document.getElementById("someCheckbox");
  var textBox = document.getElementById("qty1");

  if(checkbox.checked) {
    textBox.value = filtedNum(textBox.value);
  }else{
    textBox.value = "1";
  }
}

 

[Pirellio]

Thanks a lot, didn't see I was naming it the same