Using regex javascript or Jquery, how do i select a lone character or in the body element? We have noticed that there's a random "s" at the bottom of our site, after the footer. We have no idea where it came from -it's really bizarre because it's in the body element, but it's not tied to any child element. it's just floating there in between some script tags.
screenshot of the 's' after the footer
here is the 's' in the DOM in between scripts
It might be from a plugin - but in the meantime, we were hoping we could hide this until we find the culprit.
I'm trying to select the element first with this in the console, but I've had no success.
jQuery('body').filter( function(){ return /([s]$)/g.test( jQuery(this).text() ) } )
However, I can't select this element.. does anyone know how I can do this? Thanks so much
If the s is the the start of the string after the closing script tag and is the only text on that line, you could use a capturing group and use that group $1 in the replacement:
(<\/script>\s*\n)s$
( Capturing group
<\/script>\s\n Match closing script tag followed by 0+ times a whitespace char and a newline
) Close capturing group
s Match s
$ End of string
Regex demo
const s = `<script type="text/javascript"><\/script>
s`;
console.log(s.replace(/(<\/script>\s*\n)s$/, "$1"));
If your app is php, try to search something like this in the beginning of the php file.
This is a piece of code that will be just echoed, not executed.
s<?php
Related
I have an HTML code that contain CSS code inside tag under the header tag. I want to use regex to extract all text in HTML, only pure text (between HTML tags ). I tried,
console.log(HTML_TEXT.replace(/(<([^>]+)>)/g, ""))
which replace every thing between <> by empty char, the problem is the CSS code inside STYLE tag is still there, so i want to know how to write the regular expression to remove CSS code inside tags.
How do I solve this problem?
This RegEx might help you to do so:
(\>)(.+)(<\/style>)
It creates a right boundary in a capturing group: (<\/style>)
It has a left boundary in another capturing group: (\>), which you can add additional boundaries to it, if you wish/necessary
Then, it has a no-boundary middle capturing group, (.+), where your target is located, and you can call it using $2 and replace it with an empty string, or otherwise.
I'm not so sure, did not test it, but your code might look like something similar to:
console.log(HTML_TEXT.replace(/(\>)(.+)(<\/style>)/g, '\\$1\\$3'))
This post explains how to do a string replace in JavaScript.
Edit:
Based on the comment, this RegEx might help you to filter your tags using $1:
(\<style type=\"text\/css\"\>)([\s\S]*)(\<\/style\>)
The function of the jquery code I currently have is to detect text enclosed with parenthesis and it will serve as a text anchor to a link.
The problem is that parenthesis appears on the text anchor too. Is it possible to show only the text? Also if it's possible to change the parenthesis() into brackets []. thanks in advance.
$("body").html($("#wrapper").html().replace(/(\([^)]+\))/, "<a href='https://www.sample-url-here.com/'>$1</a>"));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="wrapper">text (link here)</div>
The outcome I need should be:
from text [link here] to text link here
What about this? (jsfiddle)
$("body").html($("#wrapper").html().replace(/\(([^)]+)\)/, "[<a href='https://www.sample-url-here.com/'>$1</a>]"));
This will output a link surrounded by square brackets, with only the link underlined.
The problem with you original regular expression was that it was looking for anything not parentheses, surrounded by anything that is parenthesis, and that whole expression was surrounded by capturing parentheses.
In other words, let's look at it like this:
(x)
We'll call those your capturing parentheses. x can later be selected with $1.
x = \([^)]+\)
See the problem? Your entire x was being captured.
EDIT
jsfiddle updated to not show brackets.
EDIT
How about this one? jsfiddle
Before you mark this as already asked, just read on!
So I have been searching the web (including StackOverflow) for a way to replace all tabs in an element (more specifically an xmp element) with four spaces. The purpose of this is to show code.
If you visit http://synergytechhosting.com/codeshower.html, you will see my code. The first "totally test code" has one tab before it. The second has four spaces. The four spaces look much more reasonable than the tab. I need it to make all tabs into four spaces so that if someone decides to space with tabs, it will fix it for them rather than making the user do it themselves.
Another problem is that the XMP counts the first line of the code as blank and moves everything down. This can only be solved by doing this:
<xmp><div>
Rather than the normal:
<xmp>
<div>
Basically I need this script to replace tabs with 4 spaces each and remove the first "enter" in the whole thing.
I am already using this to fix the tabs but it doesn't seem to work.
$('xmp').html(function() {
return this.innerHTML.replace(/\t/g, ' ');
});
I just really need this to work and have driven my self insane trying to fix this. I'm pretty sure that this is a really dumb mistake. I expect that because I am a jQuery noob. Is there a better way than using XMP? I'm open to anything and any help at all is super appreciated.
Best Regards,
Emanuel
your script is almost correct, just need to replace with 4 spaces instead of 1
and to remove the first newline, just remove the first character from the string
$('xmp').html(function() {
return this.innerHTML.substring(1).replace(/\t/g, ' ');
});
To trim any leading and trailing whitespace, use jQuery.trim. To re-indent the code from tabs to spaces, without affecting tabs that appear inside the line of code, match the start of the string (^), and use the multi-line flag (m).
$('xmp').html(function(){
return $.trim($(this).html()).replace(/^\t/gm, ' ');
});
Working Example:
$('xmp').html(function(){
return $.trim($(this).html()).replace(/^\t/gm, ' ');
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<xmp>
<div>
<p>totally test code</p>
<p>totally test code</p>
<p>totally tab code</p>
</div>
</xmp>
The following snippet should work well enough:
$('xmp').html(function () {
return $.trim($(this).html()).replace(/^\t/gm, ' ');
});
It will replace any tab characters at the start of a line with four spaces. Because the regex is anchored with ^, it should not affect anything in the middle of a line.
But here's something you may not have considered: What if the original author of the code had 8-space tabs on the screen, but indented the code with a multiple of 2 or 4 spaces intermixed with those tabs? If the author wanted to indent a block to, say, column 12, they would do something like [Tab] + [4 spaces]. It sounds crazy, but I've seen some projects (Gallery2 comes to mind) that use a combination of tabs and spaces to finely control the indentation. See, the \t character doesn't literally mean "8 (or 4) spaces", it means "jump right until the next column that is a multiple of 8 (or 4)." Because of this, [Tab] + [Tab] generally renders the same on-screen as [Tab] + [2 spaces] + [Tab], yet this regex will convert it very differently.
There is a GNU utility that ships with *nix called expand that is sort of the Swiss Army Knife of converting tabs to spaces. The source is in C, but it's short and there are some interesting insights into just how many edge cases a general-purpose tab-to-space solution could have. http://git.savannah.gnu.org/cgit/coreutils.git/plain/src/expand.c
If you are trying to show spaces in a webpage you will also need to replace the spaces with nbsp First replace tabs with the number of spaces you want, then replace spaces with nbsp
//replace tabs with spaces
msg=msg.replace(/\t/g, ' ');
//replace spaces with
msg=msg.replace(/ /g, '\u00a0');
I'm trying to grab an element's HTML using jQuery and then post it to the server. I successfully grabbed it, but I am not able to remove the white space between the tags and the line breaks that are rendered by default. The HTML code grabbed is shown below:
<table><tbody><tr><th></th><th>1</th><th>2</th><th>3</th><th>4</th><th>5</th><th>6</th><th>7</th></tr>
<tr><th>2nd row</th><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody></table>
I would like to trim the spaces between the tags only. I've used this regular expression: str.replace(/\s+/g, ' ');. But that doesn't seem to work, any suggestions?
Currently, you are replacing all consecutive sequences of whitespace with a single space.
This is what you want:
str.replace(/>\s+</g, '><');
I need to add escape character(backslash - ) character at the end of each line to wrap the string.
Hi i have the following text in a div:
[http://www.google.com Google this link] some other random text [http://example.com and another website] but don't parse [this is not a link, leave me alone].
What I tried to do was to convert the links into normal html links. The Format is always like this, so it opens with a [ and then the url, followed by the link text and then a closing ]. But I only want to match links, not all text in square brackets.
I want to use the .match() function in javascript to do this task, but I wasn't able to figure out the regex expression (I only need the text parts that are links - the rest should be a simple split).
Any help would be apprechiated.
Why .match and not .replace?
string.replace(/\[(https?:\/\/[^\]\s]+)(?: ([^\]]*))?\]/g, "<a href='$1'>$2</a>");