But is it possible to add multiple conditions to this function Something like this: myArray. You can also grab the unique values of an array by passing the array as an argument to new Set() like so: // Use Set to remove duplicate elements from the array const numbers = console. The Javascript array includes () function will return true if a value is found in an array or false otherwise. It stores only unique values and you can iterate through it. ![]() You can however add support for includes via a polyfill and I'm guessing that's what you have in your App 2. ![]() Now we just need to return the unique items. Since () wasn't included in the JS standard until ES2015 it is not supported natively by capybara-webkit. includes() returned every instance of num inside of nums2 ( MDN documentation here ). includes () Method The includes method was added in ES6 to determine whether an array contains a specified value. The includes() method determines whether an array includes a certain element, returning true or false as appropriate. to check whether the given value or element exists in an array or not. Apart from loops, you can use includes (), indexOf (), find (), etc. Objects are only the same if they really are the same object, not when they happen to have the same values for their properties. input: nums1 =, nums2 = nums1.filter(num => nums2.includes(num)) => //desired output In JavaScript, there are multiple ways to check if an array includes an item. includes() (MDN documentation here) in our callback. .includes() returns a boolean true or false if the item sought is in the array.indexOf() returns the index if found, -1 if not. Let’s apply that to our challenge, using. ![]() (MDN documentation here) input: nums1 = nums1.filter() //filter for elements that are greater than 4 nums1.filter(num => num > 4) => //filter for elements that are even numbers nums1.filter(num => num % 2 = 0) //filter for elements that are equal to 99 nums1.filter(num => num = 99) => //filter for elements that are equal to "help" nums1.filter(num => num = "help") =>. filter() method to return a new array of all elements that meet our condition.
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