2 functionmyFunc(x, y, ...params) {// used rest operator hereconsole.log(x);console.log(y);console.log(params); }varinputs = ["a","b","c","d","e","f"];myFunc(...inputs);// used spread operator here// "a"// "b"// ["c", "d", "e", "f"] 3 const featured =...
摘要:Three dots ( … ) in JavaScript。 本文分享自华为云社区《JavaScript 里三个点 ... 的用法》,作者: Jerry Wang 。 Rest Parameters 使用rest 参数,我们可以将任意数量的参数收集到一个数组中,然后用它们做我们想做的事情。 引入了其余参数以减少由参数引起的样板代码。 function myFunc(a, b, ...args...
In this article, we are going to discuss a feature introduced in ES6 that is spread operator and rest operator. 🔥 🔥 🔥 I've become a big fan of the three dots that may change your style of solving the problem within JavaScript. We can use three dots … in two different ways a...
myFunc(1, 2, 3, 4) // 6 (fourth parameter is not destructured) 1. 2. 3. 4. 5. 6. Spread Operators 展开运算符用于将可迭代对象(如数组)的元素扩展到可以容纳多个元素的位置。 function myFunc(x, y, ...params) { // used rest operator here console.log(x); console.log(y); console....
Three dots ( … ) in JavaScript Rest Parameters 使用rest 参数,我们可以将任意数量的参数收集到一个数组中,然后用它们做我们想做的事情。 引入了其余参数以减少由参数引起的样板代码。 functionmyFunc(a,b,...args){console.log(a);// 22console.log(b);// 98console.log(args);// [43, 3, 26]};...
functionmyFunc(x, y, ...params) {// used rest operator hereconsole.log(x);console.log(y);...
What does it look like?Three dots: ... What does it do?The spread operator allows an expression to be expanded in places where multiple elements/variables/arguments are expected. Boring stuff out of the way, let’s look at a bunch of examples to better understand what in the heck the ...
document.getElementById(operator).innerHTML = result; }; // variables var a = 5; var b = 13; // a | b - OR // if in any of the given numbers corresponding bit // is '1', then the result is '1' output('or', a|b); // 13 ...
The JavaScript spread operator () allows us to spread out elements of an iterable such as an array. The spread operator is represented with three dots (). This is operator is introduced in ES6. The main use cases of the spread operator are to copy array elements, concatenate arrays or ...
let person = { // The "name" property is another object // “name”属性是另一个对象 name: { first: "Joe", last: "Bloggs" }, age: 30 }; // Access the first name with dots // 用点访问 first name console.log(person.name.first); // Joe // Access the first name with strings...