Ali Imran
04-02-2003, 02:39 PM
What is the function in javascript and how to use it which will work as function str_replace of php ?
regards
Ali Imran
regards
Ali Imran
Click to See Complete Forum and Search --> : what is function in javascript (equvilant to str_replace in php) ?
Jona
04-02-2003, 02:44 PM
Okay... Let me think.... You're trying to replace a string of text with another string? Ok... document.formName.textboxName.value=document.formName.textboxName.value.replace("string", "newString");
Ali Imran
04-02-2003, 02:46 PM
And for example I want to replace \n characters on a specific position of string not in entire string
what am I going to do
thanks for reply.
what am I going to do
thanks for reply.
Jona
04-02-2003, 02:52 PM
var a = document.myForm.myTextField.value;
a=a.split("\\n").join("replace with your text");
Now all of the \n's will be replaced with, "replace with your text" You can also use Regular Expressions to do this.
a=a.split("\\n").join("replace with your text");
Now all of the \n's will be replaced with, "replace with your text" You can also use Regular Expressions to do this.
cgraz
04-02-2003, 02:56 PM
I'm new to javascript myself, but if you want a function similar to PHP's nl2br(), this will work for you.<script lanaguage="javascript">
var myString = "this is a string\n that needs \n\n to be on a newline";
var myString2 = myString.replace(/\n/g, "<br>");
document.write (myString2);
</script>
nl2br() specifically replaces newlines (\n) with html breaks (<br>). If you wanted to replace a newline with something else, just change the <br> to whatever you wanted to replace it with. this is different from str_replace because you can use regular expressions within it, where in PHP you'd have to use preg_replace or ereg_replace or something of that sort.
Cgraz
var myString = "this is a string\n that needs \n\n to be on a newline";
var myString2 = myString.replace(/\n/g, "<br>");
document.write (myString2);
</script>
nl2br() specifically replaces newlines (\n) with html breaks (<br>). If you wanted to replace a newline with something else, just change the <br> to whatever you wanted to replace it with. this is different from str_replace because you can use regular expressions within it, where in PHP you'd have to use preg_replace or ereg_replace or something of that sort.
Cgraz
Ali Imran
04-02-2003, 02:57 PM
i want to replace the ones on specific postion only
like for example
str="this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
now i want to replace only the ones between and
is there any solution ?
like for example
str="this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
now i want to replace only the ones between and
is there any solution ?
Jona
04-02-2003, 03:00 PM
Yes, use .substring().
Ali Imran
04-02-2003, 03:02 PM
can you give an example please.
Jona
04-02-2003, 03:10 PM
Yah, sure... Hold on a minute... Let me set up the code.
Jona
04-02-2003, 03:20 PM
<html><head>
<script>
function Change(){
elems = document.frm;
var n = document.frm.txt2.value.indexOf("");
var m = document.frm.txt2.value.indexOf("");
if(n== -1) { n = document.frm.txt2.value.length;}
var nq = document.frm.txt2.value.substring(n, m);
nq=nq.split("[x]").join("");
if(nq){
nq=nq.split("\\n").join("<br>");
}
else { return false; }
alert(nq);
}
</script>
</head><body>
<form name="frm">
<input type=text name="txt2">
<input type=button onclick="Change()" value="Okay"><br>
</form></body></html>
<script>
function Change(){
elems = document.frm;
var n = document.frm.txt2.value.indexOf("");
var m = document.frm.txt2.value.indexOf("");
if(n== -1) { n = document.frm.txt2.value.length;}
var nq = document.frm.txt2.value.substring(n, m);
nq=nq.split("[x]").join("");
if(nq){
nq=nq.split("\\n").join("<br>");
}
else { return false; }
alert(nq);
}
</script>
</head><body>
<form name="frm">
<input type=text name="txt2">
<input type=button onclick="Change()" value="Okay"><br>
</form></body></html>
Ali Imran
04-02-2003, 03:22 PM
thank you so much for your quick and accurate help..
I really appreciate this...
thanks again...
I really appreciate this...
thanks again...
Jona
04-02-2003, 03:23 PM
It was your idea, so I thank you. :P
cgraz
04-02-2003, 03:25 PM
How would you use a regular expression to do the replace? Wouldn't that be easier? Something that it says
change any \n found to the right of but to the left of to a <br>
Cgraz
change any \n found to the right of but to the left of to a <br>
Cgraz
Jona
04-02-2003, 03:27 PM
That would be like this:
nq=nq.replace(/\\n/g, "<br>");
I think... :D
nq=nq.replace(/\\n/g, "<br>");
I think... :D
cgraz
04-02-2003, 03:29 PM
isn't that essentially the same as my regular expression above? I think that the reg exp you wrote (as well as mine) replaces all newline characters, not just the ones found betwen and
Cgraz
Cgraz
Jona
04-02-2003, 03:33 PM
I just tested it. It works fine. It only extracts the ones inside the and .
cgraz
04-02-2003, 03:36 PM
how does that work? You make no mention of or in your reg exp. I tried<script lanaguage="javascript">
var str = "this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
var myString2 = str.replace(/\\n/g, "<br>");
document.write (myString2);
</script>And it didn't do anyting. I then changed /\\n/g to /\n/g and it replaced all the newlines in the string, but not just the ones betwen and
Cgraz
var str = "this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
var myString2 = str.replace(/\\n/g, "<br>");
document.write (myString2);
</script>And it didn't do anyting. I then changed /\\n/g to /\n/g and it replaced all the newlines in the string, but not just the ones betwen and
Cgraz
Jona
04-02-2003, 03:44 PM
But you see what I did?
<html><head>
<script>
function Change(){
elems = document.frm;
var n = document.frm.txt2.value.indexOf(""); //search for string, ""
var m = document.frm.txt2.value.indexOf(""); //search for string, ""
if(n== -1) { n = document.frm.txt2.value.length;}
var nq = document.frm.txt2.value.substring(n, m); //set a variable to get what is in between variables n and m
nq=nq.split("[x]").join(""); //replace all [x]'s with nothing (get rid of them)
if(nq){ //if nq has anything in it
nq=nq.replace(/\\n/g, "<br>"); } /*make nq equal itself, but with all \n's replaced with <br>. Notice that this is after I defined nq to equal the substring of the variables n and m*/
else { return false; } //if nq has nothing in it, just return false
alert(nq); //alert what nq contains
}
</script>
</head><body>
<form name="frm">
<input type=text name="txt2">
<input type=button onclick="Change()" value="Okay"><br>
</form></body></html>
<html><head>
<script>
function Change(){
elems = document.frm;
var n = document.frm.txt2.value.indexOf(""); //search for string, ""
var m = document.frm.txt2.value.indexOf(""); //search for string, ""
if(n== -1) { n = document.frm.txt2.value.length;}
var nq = document.frm.txt2.value.substring(n, m); //set a variable to get what is in between variables n and m
nq=nq.split("[x]").join(""); //replace all [x]'s with nothing (get rid of them)
if(nq){ //if nq has anything in it
nq=nq.replace(/\\n/g, "<br>"); } /*make nq equal itself, but with all \n's replaced with <br>. Notice that this is after I defined nq to equal the substring of the variables n and m*/
else { return false; } //if nq has nothing in it, just return false
alert(nq); //alert what nq contains
}
</script>
</head><body>
<form name="frm">
<input type=text name="txt2">
<input type=button onclick="Change()" value="Okay"><br>
</form></body></html>
cgraz
04-02-2003, 03:48 PM
oh i didn't know you meant in that code.
But I mean just a one line regular expression to replace newlines between and . (without the having to split the string up using other methods). It has to be possible, right?
Someting like:<script lanaguage="javascript">
var str = "this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
var myString2 = str.replace(reg exp here, "<br>");
document.write (myString2);
</script>
Cgraz
But I mean just a one line regular expression to replace newlines between and . (without the having to split the string up using other methods). It has to be possible, right?
Someting like:<script lanaguage="javascript">
var str = "this \nis mt \ntext\na1\na2sdflks\ndjfsdj";
var myString2 = str.replace(reg exp here, "<br>");
document.write (myString2);
</script>
Cgraz
Jona
04-02-2003, 03:55 PM
Not exactly:
<script lanaguage="javascript">
elems = document.frm;
var str1 = document.frm.txt2.value.indexOf("");
var str2 = document.frm.txt2.value.indexOf("");
var myString2 = document.frm.txt2.value.substring(str1, str2);
myString2=myString2.split("").join("");
myString2=myString2.replace(/\\n/g, "<br>");
document.write(myString2);
</script>
What we're doing is first searching for the [x] and , and set myString2 to get everything in between and . Then we use the spli() method to get rid of the first [x]. Then we replace all of what we're searching for (\n) to <br>.
<script lanaguage="javascript">
elems = document.frm;
var str1 = document.frm.txt2.value.indexOf("");
var str2 = document.frm.txt2.value.indexOf("");
var myString2 = document.frm.txt2.value.substring(str1, str2);
myString2=myString2.split("").join("");
myString2=myString2.replace(/\\n/g, "<br>");
document.write(myString2);
</script>
What we're doing is first searching for the [x] and , and set myString2 to get everything in between and . Then we use the spli() method to get rid of the first [x]. Then we replace all of what we're searching for (\n) to <br>.
cgraz
04-02-2003, 04:14 PM
Ok I see. I could've sworn there would've been a way to use a regular expression on that. This is going to bug me for a while. I'll try to play around with it when I get more familiar with javascript.
I did get a regular expression that replaced just the newline after , but it didn't replace what was between [x] and
Anyways, thanks for the clarification.
Cgraz
I did get a regular expression that replaced just the newline after , but it didn't replace what was between [x] and
Anyways, thanks for the clarification.
Cgraz
Ali Imran
04-03-2003, 02:31 PM
Thank you so much for your kind help guys.....
Actually I am new to this script and dont know objects' properties and functions fully.
Please check the attachment what I wanted to do was actually what I could not express.
I wanted to convert selected lines of text to BBCode list format and I did it with you kind help.
It creates a BBCode for list of selected text.
Enter some lines of text and seperate it on newlines
select the desired ones and them press okay button.
I am going to use it in a new forum software I am creating with EDB which is a PHP based database system which does not require any other support than just php.
I created it a month ago, and rightnow its beta testing is going on.
anyhow thanks again
Please check the attachment
regards
Ali Irman
sory the attachment was not possible so i paste code here save it as html and check it pelase.
<html><head>
<script>
function createlist(){
form1.tp.focus();
var selected = document.selection;
var srange = selected.createRange();
srange.colapse;
nq=srange.text.split("\n").join("\n ");
srange.text="\n " + nq +"\n";
}
</script>
</head><body>
<form name="form1">
<textarea type=text name="tp" rows=10></textarea>
<input type=button onclick="createlist()" value="Okay"><br>
</form></body></html>
Actually I am new to this script and dont know objects' properties and functions fully.
Please check the attachment what I wanted to do was actually what I could not express.
I wanted to convert selected lines of text to BBCode list format and I did it with you kind help.
It creates a BBCode for list of selected text.
Enter some lines of text and seperate it on newlines
select the desired ones and them press okay button.
I am going to use it in a new forum software I am creating with EDB which is a PHP based database system which does not require any other support than just php.
I created it a month ago, and rightnow its beta testing is going on.
anyhow thanks again
Please check the attachment
regards
Ali Irman
sory the attachment was not possible so i paste code here save it as html and check it pelase.
<html><head>
<script>
function createlist(){
form1.tp.focus();
var selected = document.selection;
var srange = selected.createRange();
srange.colapse;
nq=srange.text.split("\n").join("\n ");
srange.text="\n " + nq +"\n";
}
</script>
</head><body>
<form name="form1">
<textarea type=text name="tp" rows=10></textarea>
<input type=button onclick="createlist()" value="Okay"><br>
</form></body></html>
Ali Imran
04-03-2003, 02:33 PM
code is not being shown properly in post
now check attachment
now check attachment
Jona
04-03-2003, 02:40 PM
Does the script not work? What effect are you trying to get? You want the ['*] to only make a bullet if inside of the ['list] and [/'list] tags?
Ali Imran
04-03-2003, 02:46 PM
What I wanted is done. I wanted multiple selected lines be convertd to BBCode list easily and that is successfully done by your help.
thanks..
thanks..
Jona
04-03-2003, 02:58 PM
Oh, you're very welcome! :D
aapun
04-03-2003, 03:06 PM
I see some real reg ex GURUS out here. Can you guys help me solve my problem?
http://forums.webdeveloper.com/showthread.php?s=&threadid=7148
here is my question again :
I need to break a string in a particular pattern, and store the broken pieces into an array:
(two chars), (two chars), ... . . . . (three chars), (two chars)
Please suggest the simplest way to do this. While loop and a sequence of "if" statements is the obvious solution. Can any one make use of "split" or "regular expression" some how and solve it ?
example1:
1293878334
output:
(1)(29)(38)(783)(34)
example2:
12334
output:
(123)(34)
example3:
334
output:
(3)(34)
So basically, how do i specify the number of characters in my reg ex?
any kinda help appreciated.
http://forums.webdeveloper.com/showthread.php?s=&threadid=7148
here is my question again :
I need to break a string in a particular pattern, and store the broken pieces into an array:
(two chars), (two chars), ... . . . . (three chars), (two chars)
Please suggest the simplest way to do this. While loop and a sequence of "if" statements is the obvious solution. Can any one make use of "split" or "regular expression" some how and solve it ?
example1:
1293878334
output:
(1)(29)(38)(783)(34)
example2:
12334
output:
(123)(34)
example3:
334
output:
(3)(34)
So basically, how do i specify the number of characters in my reg ex?
any kinda help appreciated.
el_timm
08-14-2006, 04:25 PM
To Expand on on cgraz, you can prototype the String object:
String.prototype.nl2br = function() {
return this.replace(/\n/g, "<br />");
}
// Usage
formattedStr = unformattedStr.nl2br();
String.prototype.nl2br = function() {
return this.replace(/\n/g, "<br />");
}
// Usage
formattedStr = unformattedStr.nl2br();
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