JAVASCRIPT

match word in string js

let string = "Hello world"; // you can use .toLowerCase() to check only in lower

let match = "world"; // word to match

let regex = new RegExp('('+match+')');

console.log('true for no match, false for match');
console.log(string.match(regex) == null); //.match() returns array of words found

// true for no match, false for match
// false

javscript match word in string

let stringToSearch = 'looking for value';
let valueToFind = /off/gi 
let isValueInString = Boolean(stringToSearch.match(valueToFind));