Discovering a remedy for JavaScript Regex SyntaxError

Question

Discovering a remedy for JavaScript Regex SyntaxError

I am encountering a syntax error while attempting to use this regular expression in my JavaScript code.

const regex = /(\w{2,}+.( ){1,})|(, \w+)/g;

Could someone please assist me in identifying the mistake?

The goal is to eliminate any titles, white spaces preceding names, and any dots or special characters from names within the string.

Example:

 DR. Tida.     =>  Tida
prof. Sina.    =>  Sina

javascript regex syntax-error

Answer 1

Answer №1

you can use the regex below to achieve the desired outcome

(?<=\w+\. ?)\w+

Answer 2

you can use the regex below to achieve the desired outcome

(?<=\w+\. ?)\w+

Answer 3

Answer №2

Essentially, the qualifier +., + refers to one or more of the preceding characters or group causing an issue

+.( )

In an attempt to fix it, I adjusted the code to :

const regex = /(\w{2,}\.( ){1,})|(, \w+)/g;

I made modifications to your regex by using word characters, capturing them in a group, and adding optional dot checking

const regex = /^\w+[.\s]\s*|\.$/g;

const nama = "DR. Tida";
const nama1 = "prof. Sina.";
const regex = /^\w+[.\s]\s*|\.$/g;
console.log(nama.replace(regex,""));
console.log(nama1.replace(regex,""));

This flexible regex allows you to extract specific parts of a name like the first name or last name using $1 or $2

const regex = /(\w+)\.\s(\w+)(\.?)/;

const nama = "DR. Tida";
const nama1 = "prof. Sina.";

const regex = /(\w+)\.\s(\w+)(\.?)/g;
console.log(nama.replace(regex,"$2"));
console.log(nama1.replace(regex,"$2"));

Answer 4

Essentially, the qualifier +., + refers to one or more of the preceding characters or group causing an issue

+.( )

In an attempt to fix it, I adjusted the code to :

const regex = /(\w{2,}\.( ){1,})|(, \w+)/g;

I made modifications to your regex by using word characters, capturing them in a group, and adding optional dot checking

const regex = /^\w+[.\s]\s*|\.$/g;

const nama = "DR. Tida";
const nama1 = "prof. Sina.";
const regex = /^\w+[.\s]\s*|\.$/g;
console.log(nama.replace(regex,""));
console.log(nama1.replace(regex,""));

This flexible regex allows you to extract specific parts of a name like the first name or last name using $1 or $2

const regex = /(\w+)\.\s(\w+)(\.?)/;

const nama = "DR. Tida";
const nama1 = "prof. Sina.";

const regex = /(\w+)\.\s(\w+)(\.?)/g;
console.log(nama.replace(regex,"$2"));
console.log(nama1.replace(regex,"$2"));

Answer 5

Answer №3

Although Javascript does not support possessive quantifier like \w{2,}+, your pattern may not give the desired results after replacement.

Remember that a space ( ) does not need to be within parenthesis to create a group. You must escape the dot \. to match it literally, and {1,} can be represented as +.

You could repeat matching 2 or more word characters followed by a dot and 1 or more spaces OR match 1 or more non-word characters except for whitespace characters.

In the replacement, simply use an empty string.

(?:\w{2,}\.[^\S\n]+)+|[^\w\s]+

Check out this regex 101 demonstration.

const regex = /(?:\w{2,}\.[^\S\n]+)+|[^\w\s]+/g;
const s = `DR. Tida.
prof. Sina.
DR. prof. Tida.`;

console.log(s.replace(regex, ""));

Keep in mind that this part \w{2,}\. might match more than just titles.

To make it more specific, you may list what you want to remove using alternation:

(?:\b(?:DR|prof)\.[^\S\n]+)+|[^\w\s]+

Here's another demo on regex101

Answer 6

Although Javascript does not support possessive quantifier like \w{2,}+, your pattern may not give the desired results after replacement.

Remember that a space ( ) does not need to be within parenthesis to create a group. You must escape the dot \. to match it literally, and {1,} can be represented as +.

You could repeat matching 2 or more word characters followed by a dot and 1 or more spaces OR match 1 or more non-word characters except for whitespace characters.

In the replacement, simply use an empty string.

(?:\w{2,}\.[^\S\n]+)+|[^\w\s]+

Check out this regex 101 demonstration.

const regex = /(?:\w{2,}\.[^\S\n]+)+|[^\w\s]+/g;
const s = `DR. Tida.
prof. Sina.
DR. prof. Tida.`;

console.log(s.replace(regex, ""));

Keep in mind that this part \w{2,}\. might match more than just titles.

To make it more specific, you may list what you want to remove using alternation:

(?:\b(?:DR|prof)\.[^\S\n]+)+|[^\w\s]+

Here's another demo on regex101

Discovering a remedy for JavaScript Regex SyntaxError

Answer №1

Answer №2

Answer №3

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