What is the spread operator?
What is the use of spread operator?
What is spread operator in ES6?
What is spread syntax?
Spread syntax ( … ) allows an iterable such as an array expression or string to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected, or an object expression to be expanded in places where zero or more key-value pairs (for object literals) are expected.
What is spread operator with example?
The spread operator allows you to spread out elements of an iterable object such as an array,a map, or a set. For example: const odd = [1,3,5]; const combined = [2,4,6, …odd]; console.log(combined);
What is the difference between rest and spread operator?
Does spread operator remove duplicates?
ts. Use the spread operator to remove duplicates items and to sort a array of numbers and objects, without destruct the original array. // remove duplicate numbers and objects and sorting them too, in this case the items of type object are affected also.
What is the rest parameter and spread operator?
The spread operator allows us to spread the value of an array (or any iterable) across zero or more arguments in a function or elements in an array (or any iterable). The rest parameter allows us to pass an indefinite number of parameters to a function and access them in an array.
Does spread operator create a new object?
The fundamental idea of the object spread operator is to create a new plain object using the own properties of an existing object.
Can we use spread operator on object?
Object spread operator can be used to clone an object or merge objects into one. … When merging objects, the spread operator defines new properties while the Object.
What is the use of ECMAScript?
What is true rest parameters?
Rest parameters are real arrays; the arguments object is not. To use Array methods on the arguments object, it must be converted to a real array first.