[SOLVED] How to replace a url using regex in javascript

Issue

I have a url in the format url = /api/v1/customers/123/spend/456

I needed to replace the numbers between slashes as *.Same for numbers in the end of url as * .

so my expected url output url = /api/v1/customers/*/spend/*

How can we achieve this using RegEx??

Solution

You can do this by using lookaround(lookahead & lookbehind), using these you can match only the numbers.

let pattern = /(?<=\/)\d+(?=\/|$)/g
let url = "/api/v1/customers/123/spend/456"

url = url.replace(pattern, '*')
console.log(url)

(?<=\/)\d+(?=\/|$)

(?<=\/)  lookbehind which matches the / before a number
\d+      matches one of more digits
(?=\/|$) loohahead which matches either the / after the number or the end of the string

Answered By – anotherGatsby

Answer Checked By – Candace Johnson (BugsFixing Volunteer)