The spread operator is a feature of JavaScript introduced with ES6 that gives you access to the insides of an iterable object. An “iterable object” is anything you can iterate over item by item, such as arrays, objects literals, and strings. These kinds of JavaScript types can be traversed in some sequential fashion. See more The spread operator effectively gives you access to all of the items inside these iterable objects. Let’s look an example to illustrate what that … See more As we saw earlier, the spread operator is one of the best ways for duplicating an iterable object. There are more complex ways to do this, but … See more The spread operator can be used in many instances where one might choose to use the applymethod, which passes the values of a variable to a function in a similar way. The spread operator … See more The spread operator can also be used to compose a single iterable object from several others. This will output the contents of foo and … See more WebJan 12, 2024 · Copy an array. Combine arrays. Add an item to an array. Adding a property to an object. Use Math () functions. Spread array as function arguments. Pass unlimited …
Rest vs Spread syntax in JavaScript - Amit Merchant
WebAug 10, 2024 · Spread operator syntax: const newArray = ['firstItem', ...oldArray]; Let's now look at various instances in which we can use the spread operator. How to Copy an Array With the Spread Operator. When we want to copy the elements of a particular array into a new array without affecting the original array, we can use the spread operator. Here's an ... WebFeb 8, 2024 · The Spread Syntax (also known as the Spread Operator) is another excellent feature of ES6. As the name indicates, it takes an iterable (like an array) and expands (spreads) it into individual elements. We can also expand objects using the spread syntax and copy its enumerable properties to a new object. hope road hotel liverpool
How to Use the Spread Operator (…) in JavaScript - Medium
WebAug 15, 2024 · The spread operator can be used to spread an array of objects and values into arguments. For example, we can write: const min = Math.min (... [1, 2, 2, 3, 5]); to find … WebApr 3, 2024 · The spread operator is just 3 dots ... It can be used on iterables like an array or a string. It expands an iterable to its individual elements It can provide a function call with an array (or any other iterable) where 0 or more arguments were expected. Example The below snippet contains a function called sum which expects 3 arguments x, y, and z. WebJun 22, 2024 · The spread operator also can be applied on stings. const input = "FooBar" const printer = (...letters) => letters.forEach (letter => console.log (letter)) printer (...input) … hope road hotels