除去函数声明和函数表达式之外,在JS中还有一种更为简洁的办法可以创造函数,那就是箭头函数,这种方法相对来说更加方便。语法使用时就像一个箭头一样,顾名思义,叫做箭头函数。 let func = (arg1, arg2, ..., ar…
function(x) {returnx * x; } 箭头函数 阅读: 45060 ES6标准新增了一种新的函数:Arrow Function(箭头函数)。 为什么叫Arrow Function?因为它的定义用的就是一个箭头: x=> x * x 上面的箭头函数相当于: function(x) {returnx * x; } 在继续学习箭头函数之前,请测试你的浏览器是否支持ES6的Arrow Functio...
functionfoo() {leta =1letself =thisletb= () =>console.log(self.a)b() }foo()// 1 箭头函数不仅没有 this ,常用的 arguments 也没有。如果你能获取到 arguments ,那它一定是来自父作用域的。 functionfoo() {return() =>console.log(arguments[0]) }foo(1,2)(3,4)// 1 上例中如果箭头函...
function Person( name){ this.name = name; this.x=function(){ return this; } } let p = new Person("mcgrady"); console.log(p===p.x()) //true 1. 2. 3. 4. 5. 6. 7. 8. 9. AI检测代码解析 //严格模式下,函数中的this是undefined "use strict" function f(){ console.log(this...
Regular Function vs. Arrow Function To see the difference between a regular function expression and an arrow function, let's consider a function that multiplies two numbers. Using a regular function: // regular functionletmultiply =function(x, y){returnx * y; ...
If you use a this inside an arrow function, it behaves exactly as any other variable reference, which is that the scope chain is consulted to find a function scope (non-arrow function) where it is defined, and to use that one. 翻译:如果在箭头函数中使用this,则它的行为与任何其他变量引用...
Arrow Function With Parameters: hello = (val) =>"Hello "+ val; Try it Yourself » In fact, if you have only one parameter, you can skip the parentheses as well: Arrow Function Without Parentheses: hello = val =>"Hello "+ val; ...
In this tutorial, we will learn what is an Arrow function and conversion of functions to arrow function?
js in depth: arrow function & prototype & this & constructor,jsindepth:arrowfunction&prototype&this&constructorjsindepth,ArrowFunction,prototype,__proto__this,constructor,JS,ES6,原型链,构造函数,继承,
检查项目的 .eslintrc 或babel.config.js 文件,确保 arrow-parens 配置正确无误。 提醒团队成员遵循统一的代码风格。 确保ESLint 或其他 lint 工具已正确安装,并且在代码提交前运行检查。 示例代码 假设我们配置了 arrow-parens: ["error", "always"],以下是一些符合和不符合该规则的示例: 符合规则的代码: ...