如何使用正则表达式从电话号码中删除空格和括号？

Question

How can I remove spaces and brackets from a phone number according to the following example with Regular Expressions?

Input: +7(999) 999 99 99 Output: +79999999999

I tried the following code, but it didn't work for me:

const phone = "+7(999) 999 99 99";
phone.replace(/\s/g, "");

Answer 1

As other people said in the comments, your provided regular expression will remove the spaces for you but if you want to remove parentheses as well you need another regex for that . Keep in mind replace() method will return a new string so in order to get the new value and use it you should assign it to a new variable.

So your code should something like this:

 const phone = '+7(999) 999 99 99' let newPhone = phone.replace(/\s/g, '').replace(/[()]/g, '') console.log(newPhone) // or simply do this with one replace: newPhone = phone.replace(/[()\s]/g, '') console.log(newPhone)

Answer 2

 const phone = '+7(999) 999 99 99'; console.log(phone.replace(/\(|\)/g, "").replace(/\s/g, ''));

I think this will help you!