JAVASCRIPT

find word in javascript string

var str = "This is a test sentence";
var hasTest = str.includes("test");

find specific word string js

var stringHasAll = (s, query) => 
  // convert the query to array of "words" & checks EVERY item is contained in the string
  query.split(' ').every(q => new RegExp('' + q + '', 'i').test(s)); 


// tests
[
  '',            // true
  ' ',           // true
  'aa',          // true
  'aa ',         // true
  ' aa',         // true
  'd b',         // false
  'aaa',         // false
  'a b',         // false
  'a a a a a ',  // false
].forEach(q => console.log(
  stringHasAll('aA bB cC dD', q) 
))
 Run code snippet

find a word in string javascript

const string = "This is a very long string";
const match = string.match(/very/);
console.log(match) // ['very', index: 10, input: 'This is a very long string', groups: undefined]