|  | srcElement and innerText and? | | |
| | | GarryJones |  |
|  Posted: Sat Sep 06, 2008 9:30 am Post subject: srcElement and innerText and? |  |
| |  | |
To show users how many characters they have left in a TEXTAREA input I
have been using "taCount" from a website I googled.
function taCount(visCnt) {
var taObj=event.srcElement;
if (taObj.value.length>taObj.maxLength*1)
taObj.value=taObj.value.substring(0,taObj.maxLength*1);
if (visCnt) visCnt.innerText=taObj.value.length;
}
After googling I found out that firefox does not allow
"event.srcElement" and "innerText" to work so I tried substituting
with
var taObj = (event.target) ? event.target : event.srcElement
innerText to innerHTML
But it is still not working.
Entire code..
<script language="JavaScript" type="text/javascript">
function taLimit(taObj) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length==taObj.maxLength*1) return false;
}
function taCount(taObj, visCnt) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length>taObj.maxLength*1)
taObj.value=taObj.value.substring(0,taObj.maxLength*1);
if (visCnt) visCnt.innerHTML=taObj.maxLength-taObj.value.length;
}
</script>
You have <B>
<div id="txtmsg" class="scfmfrm_dept"> </div>
<span id="myCounter">255</SPAN></B> characters remaining
for your description..
<TEXTAREA onkeypress="taLimit(this)" onkeyup="return taCount(this,
myCounter)"
name=Description rows=7 wrap=physical cols=40 maxLength="255"></
TEXTAREA>
Anyone know what other problems firefox is having with this?
Garry Jones
Sweden |
| |
| | | Martin Honnen | |
| | Posted: Sat Sep 06, 2008 9:33 am Post subject: Re: srcElement and innerText and? | |
GarryJones wrote:
| Quote: | TEXTAREA onkeypress="taLimit(this)" onkeyup="return taCount(this,
myCounter)"
name=Description rows=7 wrap=physical cols=40 maxLength="255"></
TEXTAREA
Anyone know what other problems firefox is having with this?
|
There is no maxlength attribute defined for 'textarea' elements. see
LINK
Consequently the DOM does not define a maxLength property, see
LINK
That way your code
taObj.maxLength
gives undefined with Firefox.
Try
taObj.getAttribute("maxlength")
instead or (for IE I fear)
taObj.getAttribute("maxLength")
--
Martin Honnen
http://JavaScript.FAQTs.com/ |
| |
| | | SAM | |
| | Posted: Sat Sep 06, 2008 9:58 am Post subject: Re: srcElement and innerText and? | |
GarryJones a écrit :
| Quote: | To show users how many characters they have left in a TEXTAREA input I
have been using "taCount" from a website I googled.
|
<script type="text/javascript">
function leftText(where, max) {
if(!where.repport) {
where.repport = document.createElement('P');
where.parentNode.insertBefore(where.repport, where);
}
where.repport.className = '';
var t = where.value;
var q = max - t.length;
where.repport.innerHTML = q>0? 'Characters remaining : '+q :
q==0? 'Filled up !' : 'Filling back';
if(q<0) {
where.value = t.substring(0,t.length-1);
where.repport.className = 'red';
}
}
</script>
<style type="text/css">
..red { color: red; font-weight: bold }
</style>
<form>
<textarea onkeyup="leftText(this, 25);">test</textarea>
<textarea onkeyup="leftText(this, 15);">test</textarea>
</form>
--
sm |
| |
| | | Nick S | |
| | Posted: Sat Sep 06, 2008 11:44 am Post subject: Re: srcElement and innerText and? | |
| | | |
On Sep 6, 11:30 am, GarryJones <mor...@algonet.se> wrote:
| Quote: | To show users how many characters they have left in a TEXTAREA input I
have been using "taCount" from a website I googled.
function taCount(visCnt) {
var taObj=event.srcElement;
if (taObj.value.length>taObj.maxLength*1)
taObj.value=taObj.value.substring(0,taObj.maxLength*1);
if (visCnt) visCnt.innerText=taObj.value.length;
}
After googling I found out that firefox does not allow
"event.srcElement" and "innerText" to work so I tried substituting
with
var taObj = (event.target) ? event.target : event.srcElement
innerText to innerHTML
But it is still not working.
Entire code..
script language="JavaScript" type="text/javascript"
function taLimit(taObj) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length==taObj.maxLength*1) return false;
}
function taCount(taObj, visCnt) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length>taObj.maxLength*1)
taObj.value=taObj.value.substring(0,taObj.maxLength*1);
if (visCnt) visCnt.innerHTML=taObj.maxLength-taObj.value.length;
}
/script
You have <B
div id="txtmsg" class="scfmfrm_dept"> </div
span id="myCounter">255</SPAN></B> characters remaining
for your description..
TEXTAREA onkeypress="taLimit(this)" onkeyup="return taCount(this,
myCounter)"
name=Description rows=7 wrap=physical cols=40 maxLength="255"></
TEXTAREA
Anyone know what other problems firefox is having with this?
Garry Jones
Sweden
|
Give this a crack, it's only simple but it works in IE, FF and chrome.
<html>
<head>
<script>
function showLimit(src, limit, displayElem)
{
var srcElem = document.getElementById(src);
var displayElem document.getElementById(displayElem);
var strText= srcElem.value;
var intLen = strText.length;
var intRemaining = limit - intLen;
if (intRemaining <= 0)
{
var newVal = srcElem.value.substr(0, limit);
srcElem.value = newVal;
displayElem.innerHTML = 0;
return;
}
displayElem.innerHTML = intRemaining;
}
</script>
</head>
<body>
You have <b><span id="numLeft">10</span></b> characters
remaining<br>
<textarea id="ta" onkeyup="showLimit('ta', 10, 'numLeft');"></
textarea>
</body>
</html> |
| |
| | | Kiran Makam | |
| | Posted: Sat Sep 06, 2008 11:45 am Post subject: Re: srcElement and innerText and? | |
| | | |
Garry,
- In IE, event is a global object. In firefox, you have to get it
through the event handler. Firefox passes event object as the first
param to the event handler.
- maxLength attribute is valid for INPUT fields, but not valid for
TEXTAREA
- To access 'myCounter' span, get the reference using
document.getElementById
I have made the above mentioned changes, this is the modified code:
--------
<script language="JavaScript" type="text/javascript">
function taLimit(event, taObj, maxLength) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length==maxLength) return false;
}
function taCount(event, taObj, maxLength, visCnt) {
var taObj = (event.target) ? event.target : event.srcElement
if (taObj.value.length>taObj.maxLength)
taObj.value=taObj.value.substring(0,maxLength);
if (visCnt) visCnt.innerHTML=maxLength-taObj.value.length;
}
</script>
You have <B>
<div id="txtmsg" class="scfmfrm_dept"> </div>
<span id="myCounter">255</SPAN></B> characters remaining
for your description..
<TEXTAREA onkeypress="taLimit(event, this, 255)"
onkeyup="return taCount(event, this, 255,
document.getElementById('myCounter'))"
name=Description rows=7 wrap=physical cols=40></TEXTAREA>
--------
Kiran Makam |
| |
| | | Nick S | |
| | Posted: Sat Sep 06, 2008 12:06 pm Post subject: Re: srcElement and innerText and? | |
On Sep 6, 1:58 pm, SAM <stephanemoriaux.NoAd...@wanadoo.fr.invalid>
wrote:
| Quote: | GarryJones a écrit :
To show users how many characters they have left in a TEXTAREA input I
have been using "taCount" from a website I googled.
script type="text/javascript"
function leftText(where, max) {
if(!where.repport) {
where.repport = document.createElement('P');
where.parentNode.insertBefore(where.repport, where);
}
where.repport.className = '';
var t = where.value;
var q = max - t.length;
where.repport.innerHTML = q>0? 'Characters remaining : '+q :
q==0? 'Filled up !' : 'Filling back';
if(q<0) {
where.value = t.substring(0,t.length-1);
where.repport.className = 'red';
}
}
/script
style type="text/css"
.red { color: red; font-weight: bold }
/style
form
textarea onkeyup="leftText(this, 25);">test</textarea
textarea onkeyup="leftText(this, 15);">test</textarea
/form
--
sm
|
Yeah, Sam's is better... use his  |
| |
|
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