How To Remove Word From String In JavaScript

You've got a string, e.g. Hello World!, and you want to remove a word from it, e.g. World!. This job can be done with replace() as follows:

const newString = 'Hello World!'.replace(' World!', '')
console.log(newString) // 'Hello'

The 1^st parameter of this function takes the value you want to replace, and the 2^nd parameter the value you want to replace it with. In our case, the latter is an empty string.

Multiple occurrences

How about removing a string that appears multiple times? Instead of a string value, replace also accepts regular expressions.

const newString = 'Hello World and outer World!'.replace(/ World/g, '')
console.log(newString) // 'Hello and outer!'

In the regular expression, we can pass in the word as is, including any special characters like a space. The g means global search, i.e. watch out for multiple occurrences.

What if the words have different cases? Simply add an i after g, and the search won't be case-sensitive.