Lambdas (λ) 在 JavaScript 作为arrow functions(箭头函数)被广为所知: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // this is your regular named function in JavaScriptfunction namedFunction (a, b) {returna+b;}// this is a lambda, i.e. an arrow functionconst lambda = (a, b) =>...
function handleThings(opts = {}, name) { // ... } // good function handleThings(name, opts = {}) { // ... } 隔开函数签名,括号两边用空格隔开。 // bad const f = function(){}; const g = function (){}; const h = function() {}; // good const x = function () {}; co...
returns "Boolean".* If the input is a number, returns "Number".* If the input is a string, returns "String".* If the input is a named function or a class constructor, returns "Function".* If the
TNT,即recast.types.namedTypes,就像它的名字一样火爆,它用来判断AST对象是否为指定的类型。 TNT.Node.assert(),就像在机器里埋好的炸药,当机器不能完好运转时(类型不匹配),就炸毁机器(报错退出) TNT.Node.check(),则可以判断类型是否一致,并输出False和True 上述Node可以替换成任意AST对象,例如TNT.ExpressionState...
function getKey(k) { return `a key named k`; } // bad const obj = { id: 5, name: 'San Francisco', }; obj[getKey('enabled')] = true; // good const obj = { id: 5, name: 'San Francisco', [getKey('enabled')]: true, }; 3. 使用对象方法速记语法。 eslint: object-short...
Always add a method namedconstructor(): Syntax classClassName { constructor() { ...} } Example classCar { constructor(name, year) { this.name= name; this.year= year; } } The example above creates a class named "Car". The class has two initial properties: "name" and "year". ...
Disallows duplicate property names or parameter values.Strict mode throws an error when it detects a duplicate named property in an object (e.g.,var object = {foo: "bar", foo: "baz"};) or a duplicate named argument for a function (e.g.,function foo(val1, val2, val1){}), thereby...
unsafe_undefined (default: false)— substitute void 0 if there is a variable named undefined in scope (variable name will be mangled, typically reduced to a single character) unused (default: true)— drop unreferenced functions and variables (simple direct variable assignments do not count as ref...
function getKey(k) { return 'a key named ${k}';}// badconst obj = { id: 5, name: 'San Francisco',};obj[getKey('enabled')] = true;// goodconst obj = { id: 5, name: 'San Francisco', [getKey('enabled')]: true,}; ...
function add(a,b) { returna+b} 首先,我们拿到的这个语法块,是一个FunctionDeclaration(函数定义)对象。 用力拆开,它成了三块: 一个id,就是它的名字,即add 两个params,就是它的参数,即[a, b] 一块body,也就是大括号内的一堆东西 add没办法继续拆下去了,它是一个最基础Identifier(标志)对象,用来作为...