I'm dealing with a situation where I have strings like #test or #test?params=something
var regExp = /(^.*)?\?/;
var matches = regExp.exec($(this).data('target'));
var target = matches[1];
console.log(target);
I always want to extract only #test. However, the current function throws an error if there is no question mark in the string. My objective is to consistently retrieve #test regardless of any additional parameters. How can I adjust the regex pattern to achieve this?
Does this string come directly from the URL of the current page?
If it does, you can easily extract it using:
window.location.hash.split('?')[0]
For example, if you're on http://example.com/#test?params=something, the code above will give you "#test".
example.com/#test -> "#test"
example.com/#test?params=something -> "#test"
example.com/foo#test -> "#test"
example.com -> ""
^(.*?)(?=\?|$)
If you want to test this regex pattern, check out the demonstration.
Here's a straightforward option:
variable = stringValue.slice(0, (stringValue + "#").indexOf("#"));
Here is a helpful tip:
let pattern = /^([^?]+)/;
This regular expression will always extract the string before the first occurrence of ?, regardless of whether there is a ? in the input.
It appears that either I am overlooking something or simply:
^#\w+
Is able to handle both of these situations (here and here) quite effectively
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