Ciąg JavaScript zawiera
var string = "foo",
substring = "oo";
console.log(string.includes(substring));
Cautious Crane
var string = "foo",
substring = "oo";
console.log(string.includes(substring));const array1 = [1, 2, 3];
console.log(array1.includes(2));
// expected output: true
const pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// expected output: true
console.log(pets.includes('at'));
// expected output: falseconst pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// output: truelet fruits = ['mango', 'banana', 'pineapple', 'tomato'];
console.log(fruits.includes('banana')); //Returns True because banana is included it the list
console.log(fruits.includes('orange')); // Returns False, orange is not in the listvar str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}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]