Replace string in javascript with examples including regular expression REGEX

In this video, we are discussing How to replace a character,a substring or group of characters from a string variable in javascript

1. Replace a character from a variable with empty character
2.Replace a sub string from a variable with empty character
3.Replace a set of characters from a variable with empty character

const blogName = 'Technursery';

const blogName = 'Technursery';

const blogName = 'Technursery';