Delete lines from textarea? 2

Here is a solution to what I believe you need. A regular expression is used to obtain only wellformed urls and from there the dups are checked for as the new output is built.

<html>
<head><title>Test TextArea</title><head>
<body>
<form name="example">
<table border="0">
<tr>
<td>
<textarea name="myTextArea" rows="4" cols="25">

http://www.yahoo.com

hello asdsd http:';'

http://www.google.com

http://www.google.com</textarea>

</td>
</tr>
</table>
</form>
<body>
</html>
<script language="javascript">
var myForm = window.document.forms[0];
var text = myForm.myTextArea.value;
var pattern = /http:\/\/([a-zA-Z0-9_.]+)/gi;
var myArray = text.match(pattern);
var outtext = "";
var firstAdded = false;
for (i=0;i<myArray.length;i++)
{
if (outtext.indexOf(myArray) == -1)
{
outtext = outtext + (firstAdded?" " : "&quot + myArray;
firstAdded = true;
}
}
myForm.myTextArea.value = outtext;
</script>

mwpc · Apr 28, 2002

pbarry30, thank you for your comments. I think it is close.

My objective is to remove lines from a textarea which do NOT begin with http.

Here is the url where test scripts are running

http://www.coconutisland.com/xurl

Copies of the backend cgi scripting may be viewed at

http://www.coconutisland.com/xurl/xloc2.txt

http://www.coconutisland.com/xurl/xurl2.txt

http://www.coconutisland.com/xurl/global.txt

I am grateful for any suggestions!

leehinkleman · Apr 29, 2002

Code:

function Htt(){
t=document.frm.tex.value;
ta=t.split(&quot;\n&quot;);
for(i=0;i<ta.length;i++){
if(ta[i].substring(0,4)!=&quot;http&quot;){
ta[i]=&quot;&quot;;
//maybe ta[i]=null; would work for the above line, too
}
}
tz=ta.join(&quot;&quot;);
document.frm.tex.value=tz;
}
where the form has been named 'frm' and the textarea has
been named 'tex'
It might also be easier to remove the unwanted lines with the perl script, as in
@tex=split(&quot;\n&quot;,$textvalue);
foreach(@tex){
if(substr($_,0,4) ne &quot;http&quot;){
$_=&quot;&quot;;
}
}
$answer=join('&quot;,@tex);

mwpc · Apr 29, 2002

Thanks to leehinkleman, it is now working at

http://www.coconutisland.com/xurl

There is one issue that may not have a solution -- highlight & copy to clipboard works in IE but only highlights in netscape -- won't copy to clipboard.

<script language="Javascript">
<!--

var copytoclip=1

function HighlightAll(theField) {
var tempval=eval("document."+theField)
tempval.focus()
tempval.select()
if (document.all&&copytoclip==1){
therange=tempval.createTextRange()
therange.execCommand("Copy&quot

window.status="Contents highlighted and copied to clipboard!"
setTimeout("window.status=''",1800)
}
}
//-->
</script>

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Delete lines from textarea? 2

mwpc

Programmer

pbarry30

Programmer

mwpc

Programmer

leehinkleman

Programmer

mwpc

Programmer

Similar threads

Part and Inventory Search

Sponsor