This question already has answers here:
How can I delete a query string parameter in JavaScript?
(27 answers)
Closed 7 years ago.
I have a query string that I need to remove a certain parameter from. For instance, my query string may be "?name=John&page=12&mfgid=320", and I need to remove the "page" parameter from it and end up with "?name=John&mfgid=320". I cannot assume that the "page" parameter is or isn't followed by other parameters.
All my attempts at using JavaScript functions/regex are failing miserably, so I could really use a hand in getting this working. Thanks.
That's quite easy... It's just /page=\d+&?/
var uri = '?name=John&page=12&mfgid=320';
uri = uri.replace(/page=\d+&?/,'');
You can use:
uri = uri.replace(/[?&]page=[^&\n]+$|([&?])page=[^&\n]+&/g, '$1');
RegEx Demo
We'll need to use alternation to cover all the cases of presence of query parameter. Check my demo for all test cases.
Related
This question already has answers here:
How can I get query string values in JavaScript?
(73 answers)
Closed 2 years ago.
http://localhost:3000/?code=85b1a3645tgreg1f54221d8d9f54923b88ade29945yttrtgdg903
I am trying to get whatever comes after 'code=' from this string. How could I do this?
You could use
code=(.+)
See a demo on regex101.com.
In JavaScript this could be:
let string = 'http://localhost:3000/?code=85b1a3645tgreg1f54221d8d9f54923b88ade29945yttrtgdg903';
let m = string.match(/code=(.+)/);
console.log(m[1]);
But it would possibly be more straight-forward to parse the url as it is and use the query part accordingly.
str.match(/code=(.*)/)[1] will do that for you.
This question already has answers here:
Remove all backslashes in Javascript
(4 answers)
Closed 4 years ago.
I am trying to convert string that has following values
"A\"s\"sets"
my goal is to remove from string \ values no matter how many of them appear in string.
"A"s"sets"
I tried using new RegExp but I do not manage to perform that operation.
I even managed to create regex that will pick up everything except \ sign
[a-zA-Z0-9'"*]
I also tried calling on
regex.exec(string)
but I am getting an array instead of cleared string.
Anyone have any idea how to do this ?
Thank you
You can use replace.
let str = `"A\"s\\"sets"`
let op = str.replace(/\\+/g, '')
console.log(op)
This question already has answers here:
Is there a RegExp.escape function in JavaScript?
(18 answers)
Closed 5 years ago.
Is there any way to make something.+()[]* matching literally 'something.+()[]*'? I'm using regex builder so manual escaping is not allowed. Sure, i can add hardcoded checks if (char === '+') return '\+' but i'm looking for native solution or better way
UPD
I'm sorry. I forgot to add that matching should be in given order with moving forward but not back. So [+.] will not fit my requirements because it will match both +. and .+. I need only first case (In definition order)
You don't need to escape them if within square brackets.. I just tested and works for me, but maybe not what you are looking for?
something[.+()[]]
This question already has answers here:
Get current URL with jQuery?
(33 answers)
Closed 8 years ago.
My Url looks like:
http://mywebsite/series/2545-abc
But I don't know how to check URL with regex. So, How to check url current windows with above URL?
I mean:
If Url = http://mywebsite/series/2545-abc
do something
What about this? The regular expression defined at the first line is tested against the URL:
var myRe = /\/series\//; //regular expression to use
if(myRe.test(window.location.href)){
alert("matching");
}else{
alert("not matching");
}
If you want to test for the whole URL (and really want to use a regular expression for that), you could replace the first line with
var myRe = /^http:\/\/mywebsite\/series\/2545-abc$/;
If you remove the dollar sign at the end, modifications at the end of the URL are accepted as well (e.g. http://mywebsite/series/2545-abc/foo.html)
This question already has answers here:
Regular expression for URL
(10 answers)
Closed 8 years ago.
here is my regexp
var url_reg = /^(http[s]?:\/\/|ftp:\/\/)?(www\.)?[a-zA-Z0-9-\.]+\.(com|org|net|mil|edu|ca|in|au)+/;
it works fine for single input like https://www.google.com , but
it allows double or more "http/https/www" like below -
https://www.google.com/https://www.google.com/
url can also include folder like google.com/folder/file
i need to validate single occurrence of valid url.
Can anyone help me?
To validate a URL, you can use a regex. This is what I use. A valid URL per the URL spec. The URL you have provided, is actually a valid URL per the URL spec.
/^((((https?|ftps?|gopher|telnet|nntp):\/\/)|(mailto:|news:))(%[0-9A-Fa-f]{2}|[-()_.!~*';\/?:#&=+$,A-Za-z0-9])+)([).!';/?:,][[:blank:]])?$/
This was borrowed from OSWAP