Via regular expressions, how do I replace characters in a string with
""(nothing) if they aren't in an array of allowed characters?
var allowed = ["x","y"," "];
var string = "xyz w yz"; - replace everything not in allowed array.
3  1570 
Tony wrote: Via regular expressions, how do I replace characters in a string with
""(nothing) if they aren't in an array of allowed characters?
var allowed = ["x","y"," "];
var string = "xyz w yz"; - replace everything not in allowed array.
<input type="text" value="zxujh yjhg xzhgt" onblur="
var allowed = [ 'x', 'y', ' '];
var re = new RegExp( '[^' + allowed.join('' ) + ']', 'g' );
alert( this.value.repl ace( re, '') );
">
--
Rob
> What RobG wrote:
Excellent, thanks Rob.
cy****@yahoo.co m wrote: What RobG wrote:
Excellent, thanks Rob.
The use of an array is not necessary, the allowed characters can be a
simple string:
var allowed = 'xy ';
var re = new RegExp( '[^' + allowed + ']', 'g' );
--
Rob This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Kenneth McDonald |
last post by:
I'm working on the 0.8 release of my 'rex' module, and would appreciate
feedback, suggestions, and criticism as I work towards finalizing the
API and feature sets. rex is a module intended to make regular expressions
easier to create and use (and in my experience as a regular expression
user, it makes them MUCH easier to create and use.)
I'm still working on formal documentation, and in any case, such
documentation isn't necessarily the...
|
by: Martin Robins |
last post by:
I am trying to parse a string that is similar in form to an OLEDB connection string using regular expressions; in principle it is working, but certain character combinations in the string being parsed can completely wreck it.
The string I am trying to parse is as follows:
commandText=insert into (Text) values (@message + N': ' + @category);commandType=StoredProcedure; message=@message; category=@category
I am looking to retrive name value...
|
by: Ryan Taylor |
last post by:
Hello.
I am trying to create a regular expression that will let me know if a string
has the following criteria. Order does not matter in the string, but when
building a regular expression it does, right? I am brand new to regular
expressions and having a little (read: a lot of) difficulty in making a
regular expression that makes sure the string meets the following rules.
The string contains at least one character from two of the...
|
by: lucky |
last post by:
hi there!!
i'm looking for a code snipett wich help me to search some words into a
particular string and replace with a perticular word. i got a huge data
string in which searching traditional way mean to secrife lots of time
in asp.net. can any one give me such a expression in which i pass a
data string and search word string and replace word string? if so plz
help me out. i'm in badly need.
|
by: Billa |
last post by:
Hi,
I am replaceing a big string using different regular expressions (see
some example at the end of the message). The problem is whenever I
apply a "replace" it makes a new copy of string and I want to avoid
that. My question here is if there is a way to pass either a memory
stream or array of "find", "replace" expressions or any other way to
avoid multiple copies of a string.
Any help will be highly appreciated
| | |
by: Mike |
last post by:
I have a regular expression (^(.+)(?=\s*).*\1 ) that results in
matches. I would like to get what the actual regular expression is.
In other words, when I apply ^(.+)(?=\s*).*\1 to " HEART (CONDUCTION
DEFECT) 37.33/2 HEART (CONDUCTION DEFECT) WITH
CATHETER 37.34/2 " the expression is "HEART (CONDUCTION DEFECT)". How
do I gain access to the expression (not the matches) at runtime?
Thanks,
Mike
|
by: Zeba |
last post by:
Hi guys,
I need some help regarding regular expressions. Consider the following
statement :
System.Text.RegularExpressions.Match match =
System.Text.RegularExpressions.Regex.Match(requestPath, "(*?\
\.ashx)");
(where requestPath is a string)
|
by: peridian |
last post by:
Hi,
I wanted a web page where I could post code to, and have it appear in coloured formatting based on the context of the code.
Most of the techniques I have seen for this involve complex use of string manipulation where they seek through the string back and forth doing replacements to substitute in the needed HTML code.
I am convinced that this can be done with a few regular expressions. Unfortunately my knowledge of regular...
|
by: Allan Ebdrup |
last post by:
I have a dynamic list of regular expressions, the expressions don't change
very often but they can change. And I have a single string that I want to
match the regular expressions against and find the first regular expression
that matches the string.
I've gor the regular expressions ordered so that the highest priority is
first (if two or more regular expressions match the string I want the first
one returned)
The code that does this has...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
| | |
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| | |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
