Using a minus sign to denote negative values and leading zeroes to indicate positive values in regular expressions

Question

Using a minus sign to denote negative values and leading zeroes to indicate positive values in regular expressions

I need help with a unique form validation requirement using regex. The values must be integers between -168 and 10688, where negative values range from -168 to -10688. What makes this challenging is that users must include leading zeros, with 4 characters required for negative values and 5 characters for positive values. For example, -023 is valid, as well as 00000 and 00345. However, 0, 000, and -000 are not valid. Can someone please assist me in implementing this regex validation? I'm worried it may be too complicated. Your help is greatly appreciated! ;(

javascript regex angularjs

Answer 1

Answer №1

This solution should meet your needs

^(\d{5}|\-(?!000)\d{3})$

Akxe is accurate in pointing out the acceptable maximum and minimum values. Regular expressions are specifically for validating strings, so they do not support mathematical functions. To ensure validation, you can either use JavaScript on the client side or handle it on the server side.

Answer 2

This solution should meet your needs

^(\d{5}|\-(?!000)\d{3})$

Akxe is accurate in pointing out the acceptable maximum and minimum values. Regular expressions are specifically for validating strings, so they do not support mathematical functions. To ensure validation, you can either use JavaScript on the client side or handle it on the server side.

Answer 3

Answer №2

I found a pattern that fits the description you provided:

(-[1-9]\d\d|-\d[1-9]\d|-\d\d[1-9]|\d{5})

It gets tricky when excluding -000, leading to 4 different cases:

-[1-9]\d\d # negative numbers with a non-zero first digit
-\d[1-9]\d # negative numbers with a non-zero second digit
-\d\d[1-9] # negative numbers with a non-zero third digit
\d{5} # positive numbers with exactly 5 digits

However, keep in mind that this pattern doesn't account for upper/lower bounds. Those details can be handled easily with programming languages, and a regular expression isn't necessarily designed for that purpose.

Answer 4

I found a pattern that fits the description you provided:

(-[1-9]\d\d|-\d[1-9]\d|-\d\d[1-9]|\d{5})

It gets tricky when excluding -000, leading to 4 different cases:

-[1-9]\d\d # negative numbers with a non-zero first digit
-\d[1-9]\d # negative numbers with a non-zero second digit
-\d\d[1-9] # negative numbers with a non-zero third digit
\d{5} # positive numbers with exactly 5 digits

However, keep in mind that this pattern doesn't account for upper/lower bounds. Those details can be handled easily with programming languages, and a regular expression isn't necessarily designed for that purpose.

Answer 5

Answer №3

J.A.'s solution (

(-[1-9]\d\d|-\d[1-9]\d|-\d\d[1-9]|\d{5})

) is accurate, however, it's important to consider adding the min and max attributes to the input field. Additionally, for a smoother user experience, consider automatically adding leading zeros. Just a friendly suggestion.
PS.: How does this relate to angular?

Answer 6

J.A.'s solution (

(-[1-9]\d\d|-\d[1-9]\d|-\d\d[1-9]|\d{5})

) is accurate, however, it's important to consider adding the min and max attributes to the input field. Additionally, for a smoother user experience, consider automatically adding leading zeros. Just a friendly suggestion.
PS.: How does this relate to angular?

Answer 7

Answer №4

Here is a solution that I believe will be effective:

[0-9]{2}(-|[0-9]{3})

Explanation:

NODE                     DESCRIPTION
--------------------------------------------------------------------------------
  [0-9]{2}                match any numerical digit between 0 and 9, exactly 2 times
--------------------------------------------------------------------------------
  (-|[0-9]{3})            match either '-' OR any numerical digit between 0 and 9, exactly 3 times

Answer 8

Here is a solution that I believe will be effective:

[0-9]{2}(-|[0-9]{3})

Explanation:

NODE                     DESCRIPTION
--------------------------------------------------------------------------------
  [0-9]{2}                match any numerical digit between 0 and 9, exactly 2 times
--------------------------------------------------------------------------------
  (-|[0-9]{3})            match either '-' OR any numerical digit between 0 and 9, exactly 3 times

Using a minus sign to denote negative values and leading zeroes to indicate positive values in regular expressions

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

Modify the td attributes while retaining the extracted data values from the website

Restrict dropping items in HTML5 by only allowing the drop if the target div is

attempting to eliminate on-screen buttons by hovering over the video

Tips for Guaranteeing the Installation of Mobile Web App on Device Only

The save changes feature is not effectively syncing with the database

What is the process for transforming this information into JSON format with Javascript?

Is it possible to send arguments to the functions executed by "jQuery then"?

Using Javascript to extract a custom attribute from a button element

When the input tag is set to null, the array that holds e.target.files will be devoid of any content

Exploring cross-browser compatibility with the use of CSS3 and JavaScript

Analyzing information in JavaScript using Selenium

Is there a way to utilize req.query, req.params, or req.* beyond its original scope without the need to store it in a database?

Routing in Next.js to create custom URL slugs for usernames, like (site.com/username), is a

Ways to revert to the initial state in React.js

A guide on verifying the username, password, and chosen role from a database through the use of javascript/ajax or alternative validation methods

How can constants in AngularJS be defined in relation to other constants?

Utilizing JavaScript to dynamically adjust the height of one div to match the height of another div

Incorporating video.js into an Angular website application

How to select a DOM element in Angular 2.x

Transforming table data into a JSON format