.include in js code example
Example 1: js string contains
var string = "foo";
var substring = "oo";
console.log(string.indexOf(substring) !== -1);
Example 2: javascript includes
const pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// output: true
Example 3: .includes javascript
let storyWords = ['extremely literally actually hi bye okay']
let unnecessaryWords = ['extremely', 'literally', 'actually' ];
let betterWords = storyWords.filter(function(word) {
return !unnecessaryWords.includes(word);
});
console.log(betterWords) // ['hi' 'bye' 'okay]
Example 4: includes()
const str = 'To be, or not to be, that is the question.'
console.log(str.includes('To be')) // true
console.log(str.includes('question')) // true
console.log(str.includes('nonexistent')) // false
console.log(str.includes('To be', 1)) // false
console.log(str.includes('TO BE')) // false
console.log(str.includes('')) // true