I want to make lines of text prefixed with > to be wrapped in <span class="quoted"></span>.
Here is my code:
$(document).ready(function(){
x = $('DIV#test').html();
x = x.replace(/(^|\n)>([^\n]+)(\n|$)/g, "$1<span class=\"quoted\">$2</span>$3");
$('DIV#test').html(x);
});
I can't find a reason why, but this makes only odd lines quoted in Chrome and in IE it makes all text gray. Any ideas what is wrong with this code?
Demo at jsFiddle: http://jsfiddle.net/jBJ6V/1/
Use the m ("multiline") flag on the regular expression rather than the alternation at the outset (and with the necessary adjustments to the resulting capture groups):
$(document).ready(function(){
x = $('DIV#test').html();
x = x.replace(/^>([^\n]+)$/gm, "<span class=\"quoted\">$1</span>");
// Changes: ^----here----^ ^--here ^^--here-^
$('DIV#test').html(x);
});
Updated fiddle
The m flag tells the regular expression to treat ^ and $ as relative to individual lines, not relative to the string as a whole. More in sections 15.10.2.6 and 15.10.2.7 of the specification, and on MDC.
The reason it doesn't work in IE is that older IE handles innerHTML differently, and this reflects in jQuery having different results of .html().
Try this jsfiddle:
http://jsfiddle.net/jBJ6V/8/
I ran it through 7,8 and 9 compatibility modes and seems to be working.
Related
I've run into an issue of regex match not evaluating in Internet Explorer and in Firefox. It works fine in Chrome and Opera. I know Chrome is generally much more tolerant of mistakes so I suspect I've dropped the ball somewhere along the way - yet none of the online evaluation tools seem to find any errors in my expression. I'm sorry that it's such a convoluted expression but hopefully something will be easily obvious as the culprit. The expression is as follows:
keyData = data.match(/\w+\u0009\w+\u0009[\u0009]?\w+\u0009([-]?\w+|%%)[#]?\u0009([-]?\w+|%%)[#]?\u0009([-]?\w+|%%)[#]?(\u0009([-]?\w+|%%)[#]?)?(\u0009([-]?\w+|%%)[#]?)?(\u0009([-]?\w+|%%)[#]?)?\u0009\u0009\/\//g);
'data' is a text file which I am parsing with no errors. I wont post the whole file here but what I am hoping to match is something such as the following:
10 Q 1 0439 0419 -1 // CYRILLIC SMALL LETTER SHORT I, CYRILLIC CAPITAL LETTER SHORT I, <none>
I believe that when I post the string here it removes the 'u0009' characters so if you'd like to see one of the full files, I've linked one here. If there is anything more I can clarify, please let me know!
Edit:
My goal in this post is understanding not only why this is failing, but also if this expression well-formatted. After further review, it seems that it's an issue with how Internet Explorer and Firefox parse the text file. They seem to strip out the tabs and replace them with spaces. I tried to update the expression and it matches with no problems in an online validator but it still fails in IE/FF.
Edit 2
I have since updated my expression to a clearer form taking into account feedback. The issue still is persisting in IE and Firefox. It seems to be an issue with the string itself. IE won't let me match more than a single character, no matter what my expression is. For example, if the character string of the file is KEYBOARD and I try to match with /\w+/, it will just return K.
/[0-9](\w)?(\t+|\s+)\w+(\t+|\s+)[0-9](\t+|\s+)(-1|\w+#?|%%)(\t+|\s+)(-1|\w+#?|%%)(\t+|\s+)(-1|\w+#?|%%)((\t+|\s+)(-1|\w+#?|%%))?((\t+|\s+)(-1|\w+#?|%%))?((\t+|\s+)(-1|\w+#?|%%))?(\t+|\s+)\/\//g
After poking around with my regex for a while, I suspected something was wrong with the way IE was actually reading the text file as compared to Chrome. Specifically, if I had the string KEYBOARDwithin the text file and I tried to match it using /\w+/, it would simply return K in IE but in Chrome it would match the whole string KEYBOARD. I suspected IE was inserting some dead space between characters so I stepped through the first few characters of the file and printed their unicode equivalent.
for (i = 0; i < 30; i++) {
console.log(data.charCodeAt(i) + ' ' + data[i]);
}
This confirmed my suspicion and I saw u0000 pop up between each character. I'm not sure why there are NULL characters between each character but to resolve my issue I simply performed:
data = data.replace(/\u0000+/g, '');
This completely resolved my issue and I was able to parse my string like normal using the expression:
keyData = data.match(/[0-9](\w)?(\t+|\s+)\w+(\t+|\s+)[0-9](\t+|\s+)(-1|\w+#?|%%)(\t+|\s+)(-1|\w+#?|%%)(\t+|\s+)(-1|\w+#?|%%)((\t+|\s+)(-1|\w+#?|%%))?((\t+|\s+)(-1|\w+#?|%%))?((\t+|\s+)(-1|\w+#?|%%))?(\t+|\s+)\/\//g);
I'm trying to do some basic string manipulation on a text variable in Javascript. I have a few lines of code that look like this:
var someVar = 'first+last#domain.com';
var cleanVar = someVar.replace('#','_').replace('+','_');
When I run this code in Chrome's Javascript console, the value of cleanVar is first_last_domain.com... which is as intended. When this code runs on the live page in the browser, the replace() always works for th # character, but never for the +.
To debug this, I've tried swapping positions of the .replace('#','_') with .replace('+','_') and even breaking things out like this:
var someVar = 'first+last#domain.com';
var cleanVar = someVar.replace('#','_');
var cleanVar2 = cleanVar.replace('+','_');
Surely I'm missing something rudimentary here. I know the + combines strings in Javascript... but not when surrounded by quotes, right?
This regex method worked for me:
var cleanVar = someVar.replace(/[+#]/g,'_');
(posted by someone earlier and then removed)
As noted by a commenter, this will replace all instances of # and +. Remove the g to target only the first # or +.
I'm having some javascript issues with some legacy code, since my company is attempting to upgrade to IE11 from IE8. I have a piece of javascript that finds all commas in a field and replaces it with a couple characters, it is as follows:
document.frm.txt_fieldValue[1].value =
document.frm.txt_fieldValue[1].value.replace(/,/gi, "$0");
In my code this is all on one line, however. This code works in IE8, Chrome, and Firefox. However, in IE9+, specifically IE11 (since this is what my company is upgrading to), this code doesn't replace any commas. I can get it to replace a single comma by using the following code:
document.frm.txt_fieldValue[1].value =
document.frm.txt_fieldValue[1].value.replace(",", "$0");
Because I replaced a single comma, I know my code is reached. But I have searched around and I have yet to find a solid answer. Does anyone else have this problem? If so, has anyone found a solution?
Thanks!
You need to replace it with "$$0", which after escaping will turn into a real $0. I doubt if this code ever worked properly, on any browser.
I recently fixed a bug that might help.
If your value that you were replacing was 0 -- as a value, not a string -- IE11 would only append the replacement string instead of actually replacing it.
Here's what I was working with:
buf = buf.replace( /%%TOTALAMOUNT%%/gim, "$" + parseFloat( g_UserPurchases[LCV].CurrencyValue.val() ).toFixed(2) );
This printed: "%%TOTALAMOUNT%%.00"
I fixed it by checking:
if( ( g_UserPurchases[LCV].CurrencyValue.val() == 0 ) || ( g_UserPurchases[LCV].CurrencyValue.val() === 0 ) ){
//IE fix: IE did not like the $ character and didn't replace if val = 0
buf = buf.replace( /%%TOTALAMOUNT%%/gim, "$0.00"); }
Please note: IE11 didn't replace the the dollar sign character, $. So, I used the character code instead:
$
Hope this helps!
I have written an regex with the help of Expresso. It matches all my samples so I copied it into my JavaScript code. There it doesn't match one of my examples, but why?
RegEx:
^(\d{1,2}):?(\d\d)?\s*-\s*(\d{1,2}):?(\d\d)?$
Should match:
10-12
10:00-12:00
1000-1200
In JavaScript 10:00-12:00 doesn't work for me in all browsers like IE9, Chrome, Firefox.
Any ideas?
Update (JavaScript Code):
input.match(/^(\d{1,2}):?(\d\d)?\s*-\s*(\d{1,2}):?(\d\d)?$/);
Update (solved):
Due some prefiltering the code never got reached. Sorry for that!
Testing it in Chrome right now, and it appears to work:
var exp = /^(\d{1,2}):?(\d\d)?\s*-\s*(\d{1,2}):?(\d\d)?$/;
exp.test('10-12') // true
exp.test('10:00-12:00') // true
exp.test('1000-1200') // true
exp.test('1000-12005') // false
Did you escape the \'s when placing the expression in your Javascript code?
When embedding it as a string you'll end up writing:
var expression = "^(\\d{1,2}):?(\\d\\d)?\\s* etc
last_tag="abcde x";
last_tag = last_tag.replace(/[\s]+x$/, '');
this is my problem: i have to remove an "x" at the end of my string. This piece of code is used in a plugin i've been using without problems until now. On IE 7 "last_tag" is selected in the wrong way, so i get an "x" and i have to remove it. I think who wrote the plugin added this replace to do exactly this but it's not working on IE7.
Example:
before:last_tag="abcde x"
after: last_tag="abcde"
Actually the problem is that last_tag remain exactly the same.
is the regex correct? is there any error or compatibility issue with IE?
EDIT: Probably the regex is not the issue.
I've tried this piece of code, but nothing happens:
var temp_tag="abc x";
alert(temp_tag);
temp_tag = temp_tag.replace(/[\s]+x$/, '');
alert(temp_tag)
The same piece of code work perfectly on Chrome.
The regex looks okay, but it's possible you're trying to match non-breaking spaces (U+00A0). \s doesn't match those in IE (as explained in this answer), but it does in FireFox and Chrome.
I'd go for this RegExp
/\s+x$/
don't use character class [] for \s which is a character class already
(shorthand for something like [ \t\r\n\v\f]) (space, tab, carriage return, line feed, vertical tab, form feed)
edit
Alan Moore is right:
try this instead
/[\s\u00A0]+x$/
edit
maybe this is case sensitive: maybe \u00a0would not be correct
this should match every white-space-character as well as the non breaking spaces
Try this
last_tag = last_tag.replace(/[\t\r\n]+x$/, '');