概要 该文讲解Eslint 配置项 prefer-destructuring在TypeScritp + Vue 项目中使用和配置 配置说明参考腾讯云文档说明 配置 .eslintrc.js 的rules...配置中一般配置为 { rules: { 'prefer-destructuring': 2 // 如果在Type项目建议注释 } } 用法 // 正常写法 const
); if (validateExportLifecycle(scriptExports)) { // eslint-disable-next-line prefer-destructuring...bootstrap = scriptExports.bootstrap; // eslint-disable-next-line prefer-destructuring...mount = scriptExports.mount; // eslint-disable-next-line prefer-destructuring unmount =...bootstrap = globalVariableExports.bootstrap; // eslint-disable-next-line prefer-destructuring...mount = globalVariableExports.mount; // eslint-disable-next-line prefer-destructuring
php再调用json_decode从字符串对象生成json对象时,如果使用[]操作符取数据,会得到下面的错误 错误: Cannot use object of type stdClass as array...json_decode Return Values:Returns an object or if the optional assoc parameter is TRUE, an associative array
: arr }) } }) }, keepWrapperHeight (keep) { // eslint-disable-next-line prefer-destructuring...list: this.config.tabList }) } }) }, keepWrapperHeight (keep) { // eslint-disable-next-line prefer-destructuring
eslint: no-array-constructor // bad const items = new Array(); // good const items = []; 2....使用展开操作符 … 代替 Array.from,来将一个类数组(array-like) 对象转换成数组。...// bad const baz = [...foo].map(bar); // good const baz = Array.from(foo, bar); 解构 Destructuring 1....eslint: prefer-destructuring jscs: requireObjectDestructuring // bad function getFullName(user) {...eslint: prefer-destructuring jscs: requireArrayDestructuring const arr = [1, 2, 3, 4]; // bad const first
因为let是块级作用域,而var是函数级作用域 // bad var count = 1; if (true) { count += 1; } // good, use the let. let...eslint: no-array-constructor // bad const items = new Array(); // good const items = []; 4.2 用Array...(arrLike); // good const arr = Array.from(arrLike); 4.6 用 Array.from 而不是 ......= [ { id: 1, }, { id: 2, }, ]; const numberInArray = [ 1, 2, ]; ⬆ back to top Destructuring...eslint: prefer-destructuring Why?
ref={this.aa} > //100个一定高度的div )} } 9、ESLint Unexpected use...Number.isNaN(Number('1.2.3')); // true https://stackoverflow.com/questions/46677774/eslint-unexpected-use-of-isnan...item.index = index + 1; }); https://github.com/airbnb/javascript/issues/1653 11、error Use...array destructuring:使用数组结构来赋值 //bad newTime = array[0]; //good [newTime] = array; 12、error Use object...destructuring:使用对象结构来赋值 //bad const clientWidth = document.body.clientWidth; //good const {body:{clientWidth
indent: 0, 'linebreak-style': 0, 'no-trailing-spaces': 0, 'class-methods-use-this...no-v-for-template-key': 'off', // vue3 v-for 中template 可以设置key 'vue/no-v-model-argument': 0, 'vue/no-use-v-if-with-v-for...': 1, 'no-continue': 1, 'operator-assignment': 1, 'no-bitwise': 1, 'prefer-destructuring...': 2, 'array-callback-return': 2, 'func-names': 2, 'no-plusplus': 2,...(js|jsx)$/, use: [ 'babel-loader', 'eslint-loader' ] } ] } } 但是官方已经不建议这么用了
// bad const items = new Array() // good const items = [] 向数组中添加元素时,请使用 push 方法 const items = [] /...而不是 Array.from const foo = document.querySelectorAll('.foo') // good const nodes = Array.from(foo)...'baz', length: 3 } // bad const arr = Array.prototype.slice.call(arrLike) // good const arr = Array.from...: 1 }, { id: 2 } ] const numberInArray = [ 1, 2 ] 解构赋值 当需要使用对象的多个属性时,请使用解构赋值,eslint: prefer-destructuring...getFullName ({ firstName, lastName }) { return `${firstName} ${lastName}` } 当需要使用数组的多个值时,请同样使用解构赋值,eslint: prefer-destructuring
object-shorthand': 'error', // 方法属性值简写 'quote-props': ['error', 'as-needed'], // 只对那些无效的标示使用引号 '' 'no-array-constructor...': 'error', // 数组要求字面量赋值 'no-new-object': 'error', // 对象使用字面值创建对象 'array-callback-return': 'error...', // 在数组方法的回调中强制执行 'prefer-destructuring': [ 'error', { array: true,...{ int32Hint: false }], // 用空格来隔开运算符 'padded-blocks': ['error', 'never'], // 不要故意留一些没必要的空白行 'array-bracket-spacing
Array destructuring var [a,b] = [1,2] var [a,b] = c //c=[1,2] Object destructuring var {a,b} = {a :
提案提到了 BindingPattern 与 AssignmentPattern: // binding patterns const Foo(y) = x; // instance-array...destructuring const Foo{y} = x; // instance-object destructuring const [Foo(y)] = x;...// qualified names (i.e., a.b.c) // assignment patterns Foo(y) = x; // instance-array...destructuring Foo{y} = x; // instance-object destructuring [Foo(y)] = x;
构建一下看看结果: "use strict"; function _objectWithoutProperties(source, excluded) { if (source == null) return...const a = [1,2,3,4,6]; console.log(a.includes(7)) 通过 @babel/compat-data 可以看下 includes 特性的兼容性: "es7.array.includes...strict"; var a = [1, 2, 3, 4, 6]; console.log(a.includes(7)); 可以得出结论:虽然不支持 Array.prototype.inlcudes.../index.js --out-file build.js,看看 build.js 的结果: "use strict"; require("core-js/modules/es.array.includes.js...search=Destructuring [7] @babel/plugin-transform-destructuring: https://www.babeljs.cn/docs/babel-plugin-transform-destructuring
.`; # Array let list: number[] = [1, 2, 3]; let list2: Array = [1, 2, 3]; # Tuple The Tuple.../ Error, 'boolean' cannot be assigned to '(string | number)' # Tuples Deconstruction Since tuples use...case, if the variable needs to be assigned a value with the string or null or undefined type, you can use...The first is the use of angle brackets syntax: let someValue: any = 'this is a string'; let strLength...let someValue: any = 'this is a string'; let strLength: number = (someValue as string).length; # Destructuring
变量声明和解构赋值(Destructuring Assignment): 这段代码中使用了解构赋值,它是一种方便的从对象或数组中提取值并赋值给变量的方法。...[, '']; 数组解构赋值(Array Destructuring Assignment): 在这段代码中,通过解构赋值从 url.match(this.URL_SPLIT) ??
boolean; } export interface TemplateLiteral extends BaseNode { type: "TemplateLiteral"; quasis: Array...; expressions: Array; } 3.1.3....Destructuring Binding Patterns 3.2.1. ES6 语法定义 ? 3.2.2....| null; } export interface ObjectPattern extends BaseNode { type: "ObjectPattern"; properties: Array...; decorators: Array | null; typeAnnotation: TypeAnnotation
--version sudo npm install -g typescript tsc --version ls tsc Hello.ts export class Hello { } "use...析构表达式 destructuring析构表达式: 通过表达式将对象或数组拆解成任意数量的变量 function getStock() { return { code: 'IBM', price...: 100 } } var { code, price } = getStock(); console.log(code); console.log(price); var array1 = [1,2,3,4...number2,...others]) { console.log(number1); console.log(number2); console.log(others); } doSomething(array1
变量解构 - Array destructuring let input = [1, 2]; let [first, second] = input; console.log(first); // outputs...fourth] = [1, 2, 3, 4]; console.log(second); // outputs 2 console.log(fourth); // outputs 4 Object destructuring
English 中文 English 中文 arity 参数个数 argument 实参 assignment 赋值 array of arrays 多维数组 block scope 块级作用域 build-in...LIFO(Last-In-First-Out) 先进后出 FIFO(First-In-First-Out) 先进先出 loop 循环 backward compatibility 向下(向后)兼容 destructuring
因此,大多数资源仅列出ECMAScript 2016中的两个显着变化: 1.添加乘幂(**)运算符 2.添加Array.prototype.includes()方法 这些功能对JavaScript开发人员具有最直接的影响...例如: // 可以使用 "use strict"; function doSomething(a, b=a) { // code } 在这种情况下,函数之外的“use strict”指令是有效的语法...doSomething(value=070) { "use strict"; return value; } } 此示例将具有非简单参数的函数嵌套在具有“use...“use strict”指令开始沦为JavaScript的历史文物,因为ECMAScript模块和类都会以严格模式自动运行,而无需选择退出,这意味着在这些情况下不需要使用“use strict”。...strict" with respect to destructuring in parameter lists 原文链接:http://ivweb.io/topic/582925ea9554d860548c1fa4
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