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.
Read moreWhat is the rest parameter?
Rest parameter is an improved way to handle function parameter , allowing us to more easily handle various input as parameters in a function. The rest parameter syntax allows us to represent an indefinite number of arguments as an array.28 Eyl 2021
Read moreWhat is the rest operator in JS?
In JavaScript functions, rest gets used as a prefix of the function’s last parameter. The rest operator ( … ) instructs the computer to add whatever otherInfo (arguments) supplied by the user into an array . Then, assign that array to the otherInfo parameter.15 Eyl 2021
Read moreWhat do three dots above and below code mean?
When we see three dots (…) in the code, it’s either rest parameters or the spread operator . There’s an easy way to distinguish between them: When three dots (…) is at the end of function parameters, it’s “rest parameters” and gathers the rest of the list of arguments into an array.
Read moreWhat is three dots in VUE JS?
The three dots in JavaScript are the spread / rest operator . The spread syntax allows an expression to be expanded in places where multiple arguments are expected. The rest parameter syntax is used for functions with a variable number of arguments. The spread / rest operator for arrays was introduced in ES6 .
Read moreWhat are the three dots in JavaScript?
In this usage, the three dots are also called spread operator . As the name implies, we can unpack items of a JavaScript iterable (string, array, object and so on) with it.
Read moreWhat does 3 dots mean in typescript?
The three dots are known as the spread operator from Typescript (also from ES7). The spread operator return all elements of an array. Like you would write each element separately: let myArr = [1, 2, 3]; return [1, 2, 3]; //is the same as: return […myArr];
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