I'm creating a javascript regex to match queries in a search engine string. I am having a problem with alternation. I have the following regex:
.*baidu.com.*[/?].*wd{1}=
I want to be able to match strings that have the string 'word' or 'qw' in addition to 'wd', but everything I try is unsuccessful. I thought I would be able to do something like the following:
.*baidu.com.*[/?].*[wd|word|qw]{1}=
but it does not seem to work.
replace [wd|word|qw] with (wd|word|qw) or (?:wd|word|qw).
[] denotes character sets, () denotes logical groupings.
Your expression:
.*baidu.com.*[/?].*[wd|word|qw]{1}=
does need a few changes, including [wd|word|qw] to (wd|word|qw) and getting rid of the redundant {1}, like so:
.*baidu.com.*[/?].*(wd|word|qw)=
But you also need to understand that the first part of your expression (.*baidu.com.*[/?].*) will match baidu.com hello what spelling/handle????????? or hbaidu-com/ or even something like lkas----jhdf lkja$##!3hdsfbaidugcomlaksjhdf.[($?lakshf, because the dot (.) matches any character except newlines... to match a literal dot, you have to escape it with a backslash (like \.)
There are several approaches you could take to match things in a URL, but we could help you more if you tell us what you are trying to do or accomplish - perhaps regex is not the best solution or (EDIT) only part of the best solution?
Related
I'm trying to look for specific keywords inside of text from a for each loop.
var text = "The lazy fox jumped over the brown dog."
var keywords = "fox,dog,sun";
If true, I want to do something with the text. If false, I want to ignore the text.
Does anyone know how to use an Array filter, Function, Select, Condition or inline code to check for this? If so, specific examples would be great.
By the way, I have a C# function that handles this extremely well in an ASP.net Core app.
UPDATE 1:
This doesn't work.
UPDATE 2:
The Condition is always false after the for each loop even after changing the settings and parallelism to 1.
Azure Logic App Condition does not work in loop if based on changing values
Thanks in advance!
There are so many ways to achieve what you need. Here are the 3 options that came to my mind within a minute.
The first one does use a For each loop, but I wouldn't recommend using it as it's not very efficient.
The For each parameter looks like this:
The Condition parameter looks like this:
The second option is much easier - no need for a loop, just filter the array straight away, then you can check whether it's empty or it has some items:
The Filter array parameters look as follows.
The split function is identical to the one used in option 1.
If you know JavaScript, you might decide to use regular expressions in inline code instead, e.g.:
Then you'd just need to check the output of the inline code. JavaScript code used in the example above:
var text = workflowContext.actions.Compose_text.outputs;
var keywords = workflowContext.actions.Compose_keywords.outputs;
return text.match(new RegExp("(" + keywords.split(",").join("|") + ")", "gi"));
My personal preference is option 2. However, please note that all 3 options above would find "sun" in text "The weather was sunny" even though there's no word "sun" in the text. If you do need "sun" to match only word "sun" - not "sunny", "asunder" or "unsung" - then go for option 3, just use a different, more complex regular expression.
One of the workaround would be use of Condition Connector. I have initialized the sentence in a string and then used Condition Connector which will be checking the conditions.
Finally, In the true section you can add the connectors accordingly.
Placing a Compose behind the for each loop and referencing the Output in the Condition is what finally worked for me. I used the toLower() function in my Compose. The Compose looks like this.
toLower(items('For_each_2')?['day']?['longPhrase'])
I am using this regex expression for an input. When I try it in Chrome, it works well, but not when I try in IE. The regex editor that I am using advice me that the negative look-behind expression could not work for some browsers.
How can I adapt the expression to make it work for IE? I am using it to make impossible to end the input with /.
(^(?!.*\/\/)^(?!^\/)[A-Za-z0-9\/\-?:().,'+\s]+(?<!\/))
Negative look-behind expression not working in IE:
(?<!\/))
Thanks in advance and best regards.
If you don't want a / at the end of the string, you could add another lookahead.
^(?!.*\/\/)^(?!^\/)(?!.*\/$)[A-Za-z0-9\/\-?:().,'+\s]+
Regex demo
But in that case, it might be easier to use a version where the / is not in the character class but optionally repeated preceding the character class.
This way, it can not occur at the start or at the end of the string, and there can also not be //
^[A-Za-z0-9?:().,'+\s-]+(?:\/[A-Za-z0-9?:().,'+\s-]+)*$
Regex demo
I am looking to have a regex for passing a value in the array to comma separated. Here is the regex I used for the fetching the value.
Regex: id="selectedAgency(.+?)" currently using this regex I am able to find the below value which is matching in
id="selectedAgency[1]"
Hence the outcome I receives is as follows:
&selectedAgencies=[14],[12],[10],[9]
However I would like to have the actual output as the below:
&selectedAgencies= 14,12,10,9
To remove [] use different regex:
Regex : id="selectedAgency\[(\d+)
not sure if this JavaScript version works for you but here it is. Hopefully the regex and replace part should help.
let str = "&selectedAgencies=[14],[12],[10],[9]";
let result = str.replace(/\[(\d+)\]/g, "$1"); //&selectedAgencies=14,12,10,9
I'm using a regex to validate a form input. So basically a user can input "SELECT some_name of select_match".
So far I have the regex: \bSELECT\b \bof select_match\b
The last part is the middle part, which I think should be [a-zA-Z] but I'm not sure how to place it in the middle. I've read multiple pages but can't get it to work.
Also preferably I'd like the regex to ignore spaces between "SELECT" and of "select_match". Meaning that SELECT blabla of select_match and SELECT blabla of select_match would both be validated as correct.
Can anyone tell me how to do this? Thank you.
If I understood you correctly, this should work:
/^SELECT\s+(\w+)\s+of select_match$/
Notes:
This allows any number of spaces between "SELECT" and the match_name; and between the match_name and the "of" (but, at least 1. To change to at least 0, change the \s+ to a \s*)
After that, the rest of the string must be exactly like that (same spaces and words exactly).
The match_name will be in match group 1.
If this doesn't work, show a bit of your code (where you use it) and we can try to find the problem.
Note: If you are using it in ng-pattern lose the "/"s (being the pattern: ^SELECT\s+(\w+)\s+of select_match$).
Note2: If you are using it in a string, remember you might need to escape every "\" (making it a "\", and the result: ^SELECT\\s+(\\w+)\\s+of select_match$
I'm using ngTagsInput where I want to allow all tags expect a few strings.
In their documentation it appears I can specify allowed tags through a regex but I can seem to work it out - been trying http://regexr.com/ for last hour with no luck.
So for example the strings I dont want to be accepted are:
story and global.
How do i go about to say everything is allowed expect those 2?
So for example storyBreaking is allowed but story is not.
Thanks.
try something like that:
(?<![\w\d])abc(?![\w\d]) where abc is your string to match!