30-seconds-of-code/snippets/allUnique.md

title, tags

title	tags
allUnique	array,beginner

Checks if all elements in an array are equal and returnstrue else returns false.

• Use Array.prototype.length property to return the number of elements in that array.
• Use Set() object to collect unique elements from the given array and then the Set.prototype.size to get the number of elements in the set
• Check the two values for equality

const allUnique = myArray => myArray.length === new Set(myArray).size;

allUnique([1,2,3,4,5]); // true
allUnique([1,1,2,3,4]); // false