Obtener texto entre 2 caracteres y remplazar valor

get_text_between_characters_and_replace_value.js

let text = 'hello :name; ok :name2; ok2'
let the_value_to_search = ':'
let the_value_to_search2 = ';'
let the_new_value_to_replace = '+'

let regex_between = new RegExp(`${the_value_to_search}(.*?)${the_value_to_search2}`, 'gi');
const matches = text.matchAll(regex_between);
let the_text_end = Array.from(matches, x => x[1]).join(the_new_value_to_replace).toString();
console.log(the_text_end);