ProgramGuruTo check if a Set contains all the items of another Set in JavaScript, you can use the Set.prototype.has method along with iteration.
In this example,
set1 and set2 containing elements of a specific type.set2 and use the Set.prototype.has method to check if it exists in set1.set2 is not found in set1, we set containsAllItems to false, otherwise true.// Define Sets with items
const set1 = new Set(["apple", "banana", "orange", "grape", "melon"]);
const set2 = new Set(["banana", "orange"]);
// Check if set1 contains all items of set2
let containsAllItems = true;
set2.forEach(item => {
if (!set1.has(item)) {
containsAllItems = false;
}
});
// Print result
console.log(`Does set1 contain all items of set2? ${containsAllItems}`);Does set1 contain all items of set2? true
In this example,
set1 and set2 containing elements of a specific type.set2 and use the Set.prototype.has method to check if it exists in set1.set2 is not found in set1, we set containsAllItems to false.// Define Sets with items
const set1 = new Set(["apple", "banana", "orange", "grape", "melon"]);
const set2 = new Set(["banana", "peach"]);
// Check if set1 contains all items of set2
let containsAllItems = true;
set2.forEach(item => {
if (!set1.has(item)) {
containsAllItems = false;
}
});
// Print result
console.log(`Does set1 contain all items of set2? ${containsAllItems}`);Does set1 contain all items of set2? false
In this tutorial, we learned How to check if a Set contains all the items of Another Set in JavaScript language with well detailed examples.