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Limit Textarea chars. and dynamic textfield 2
- Thread starter rmz8
- Start date
-
2
- #2
luciddream
Programmer
<script>
function func(obj, num, othobj)
{
str = new String(obj.value);
othobj.value = new Number(str.length + 1);
dnum = num -1;
if(str.length >= dnum)
{
alert('you can only have '+num+' characters in this field.');
obj.onfocus = obj.blur;
}
}
</script>
<form name="frm">
<input type="text" name="textbox">
<textarea onkeypress="func(this, 30, document.frm.textbox)"></textarea>
</form>
this works for me... adam@aauser.com
function func(obj, num, othobj)
{
str = new String(obj.value);
othobj.value = new Number(str.length + 1);
dnum = num -1;
if(str.length >= dnum)
{
alert('you can only have '+num+' characters in this field.');
obj.onfocus = obj.blur;
}
}
</script>
<form name="frm">
<input type="text" name="textbox">
<textarea onkeypress="func(this, 30, document.frm.textbox)"></textarea>
</form>
this works for me... adam@aauser.com
- Thread starter
- #3
- Thread starter
- #5
luciddream
Programmer
use both... onchange and onkeypress. adam@aauser.com
theEclipse
Programmer
hey, couldn't you just use the maxchar=30:
<input type=text maxchar=30 name=" text Box With Only Thirty Characters">
then, also, use luciddream's function.
theEclipse
eclipse_web@hotmail.com
robacarp.webjump.com
**-Trying to build a documentation of a Javascript DOM, crossbrowser, of course. E-mail me if you know of any little known events and/or methods, etc.
<input type=text maxchar=30 name=" text Box With Only Thirty Characters">
then, also, use luciddream's function.
theEclipse
eclipse_web@hotmail.com
robacarp.webjump.com
**-Trying to build a documentation of a Javascript DOM, crossbrowser, of course. E-mail me if you know of any little known events and/or methods, etc.
- Thread starter
- #8
- Thread starter
- #9
But how can you make it so that it places the amount of characters in the textbox if there is already a value in the box? For example, I want the textbox to show how many chars. are in the textarea when the page is loaded (as well as how many when a char. is typed) but the text field doesn't reflect the initial value of chars. in the textarea. Do I want to use an OnLoad?
Ryan ;-]
Ryan ;-]
- Thread starter
- #11
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