JavaScript Regexp: numbers and few special characters regex numbers special characters,regex letters numbers special characters,regex

I thought it should match when my string containts one or more digits and exactly 1 special character

No, the original pattern matches a string contains one or more digits or exactly 1 special character. For example it will match 123 and = but not 123=.

Try this pattern:

^\d+[=<>]$

This will match that consists of one or more digits, followed by exactly one special character. For example, this will match 123= but not 123 or =.

If you want your special character to appear before the number, use a pattern like this instead:

^[=<>]\d+$

This will match =123 but not 123 or =.


Update

Given the examples you provided, it looks like you want to match any string which contains one or more digits and exactly one special character either at the beginning or the end. In that case use this pattern:

^([=<>]\d+|\d+[=<>])$

This will match <1, =2, 22>, and >1, but not 123 or =.

Answer:1

Just use [0-9]+[=<>]

Here are visualizers of your regexp and this one:

Answer:2

Your regex says:

1 or more numbers OR 1 symbol

Also, the ^ and $ means the whole string, not contains. if you want a contains, drop them. I don't know if you have a space between the number and symbol, so put in a conditional space:

[0-9]+\s?[=<>]{1}
Answer:3

This should work.

^[0-9]+[=<>]$

1 or more digits followed by "=<>".

Answer:4

Try this regex:

^\d+[=<>]$

Description

Regular expression visualization

Answer:5

I'm writing a simple text-base game in my free time. It's called TARDIS flight (Doctor Who!) and I'm working on the main menu. So I'm using a function, addMainMenuListeners, to add all the event ...

I'm writing a simple text-base game in my free time. It's called TARDIS flight (Doctor Who!) and I'm working on the main menu. So I'm using a function, addMainMenuListeners, to add all the event ...

I need your help, if the following code below counts every table row in a table, how can it be amended such that the code won't count the <th></th> as a row itself? var rows = document....

I need your help, if the following code below counts every table row in a table, how can it be amended such that the code won't count the <th></th> as a row itself? var rows = document....

  1. counting number rows sql
  2. counting rows number
  3. counting number of rows in excel
  4. counting number of rows in r
  5. counting number of rows in python
  6. counting number of rows in pandas
  7. counting number of rows in dataframe
  8. counting number of rows in pandas dataframe
  9. counting number of rows in excel vba
  10. counting number of rows in vba
  11. counting number of rows in mysql
  12. counting number of rows in csv python
  13. counting number of rows in sas
  14. counting number of rows in php
  15. counting number of rows in excel after filter
  16. counting number of rows in a range vba
  17. counting number of rows in excel using vba
  18. counting number of rows in dataframe r
  19. counting number of rows in hive
  20. counting number of rows in a table

I'm trying to access an object that I retrieve from MongoDB with my client-side JS. Specifically, I want to be able to loop through and use the arrays within the object. Here is my server-side JS ...

I'm trying to access an object that I retrieve from MongoDB with my client-side JS. Specifically, I want to be able to loop through and use the arrays within the object. Here is my server-side JS ...

  1. send object from one activity to another
  2. send object from activity to fragment
  3. send object from one fragment to another
  4. send object from jsp to servlet
  5. send object from jsp to controller
  6. send object from postman
  7. send object from view to controller
  8. send object from one component to another angular
  9. send object from angular to spring boot
  10. send object from client to server java
  11. send object from ajax to controller
  12. send object from php to javascript
  13. send object from child to parent angular

I want to update a clock in the UI when the time changes from 12:01 to 12:02. I can do a setInterval every 60 seconds, but the beginning might not be on the first second of a new minute. How can I ...

I want to update a clock in the UI when the time changes from 12:01 to 12:02. I can do a setInterval every 60 seconds, but the beginning might not be on the first second of a new minute. How can I ...