How to pass a variable into regex in jQuery/Javascript How to pass a variable into regex in jQuery/Javascript jquery jquery

How to pass a variable into regex in jQuery/Javascript


jquery regex match

Javascript doesn't support interpolation like Ruby -- you have to use the RegExp constructor:

var aString = "foobar";var pattern = "bar";var matches = aString.match(new RegExp(pattern));

jquery regex match

It's easy:

var variable_regex = "bar";var some_string = "foobar";some_string.match(variable_regex);

Just lose the //. If you want to use complex regexes, you can use string concatenation:

var variable_regex = "b.";var some_string = "foobar";alert (some_string.match("f.*"+variable_regex));

jquery regex match

It's easy, you need to create a RegExp instance with a variable.When I searched for the answer, I also wanted this string to being interpolated with regarding variable.

Try it out in a browser console:

let b = 'b';(new RegExp(`^a${b}c$`)).test('abc');// true

Recent Posts
How can I color dots in a xy scatterplot according to column value?
How to update a claim in ASP.NET Identity?
What does {0} mean when initializing an object?
Accessing members of items in a JSONArray with Java
How to log SQL statements in Spring Boot?
Powershell Get-WebSite name parameter is ignored
How to detect scroll to bottom of html element
Java synchronized method
How to test controllers with CodeIgniter?
Detect Visual Composer
Matplotlib: Specify format of floats for tick labels
Rails join a list of strings with commas and "and" before the last