Need to replace a string from a long string in javascript

Question

I have a long string

Full_str1 = 'ab@xyz.com;cab@xyz.com;c-ab@xyz.com;c.ab@xyz.com;c_ab@xyz.com;';
removable_str2 = 'ab@xyz.com;';

I need to have a replaced string which will have resultant Final string should look like,

cab@xyz.com;c-ab@xyz.com;c.ab@xyz.com;c_ab@xyz.com;

I tried with

str3 = Full_str1.replace(new RegExp('(^|\\b)' +removable_str2, 'g'),"");

but it resulted in

cab@xyz.com;c-c.c_ab@xyz.com;

Answer 1

Here a soluce using two separated regex for each case :

• the str to remove is at the start of the string
• the str to remove is inside or at the end of the string

PS : I couldn't perform it in one regex, because it would remove an extra ; in case of matching the string to remove inside of the global string.

const originalStr = 'ab@xyz.com;cab@xyz.com;c-ab@xyz.com;c.ab@xyz.com;ab@xyz.com;c_ab@xyz.com;';
const toRemove = 'ab@xyz.com;';

const epuredStr = originalStr
                      .replace(new RegExp(`^${toRemove}`, 'g'), '')
                      .replace(new RegExp(`;${toRemove}`, 'g'), ';');

console.log(epuredStr);