render function automatically trigger onClick props function issue in React?
来源： https://stackoverflow.com/questions/52849699/render-function-automatically-trigger-onclick-props-function-issue-in-react
es6-modules
Why does JavaScript have default exports?
问题 Context JavaScript has two types of exports: normal [1] and default. EDIT : JavaScript has two types of export syntaxes Normal exports class Foo {...} class Bar {...} export { Foo, Bar, }; or export class Foo {...} export class Bar {...} Normal exports can be imported in two ways: namespace [1] imports and named imports (looks similar to destructuring). Namespace imports import * as Baz from './baz'; Named imports import {Foo, Bar} from './baz'; Default exports class Foo {...} class Bar {...}
Why does JavaScript have default exports?
问题 Context JavaScript has two types of exports: normal [1] and default. EDIT : JavaScript has two types of export syntaxes Normal exports class Foo {...} class Bar {...} export { Foo, Bar, }; or export class Foo {...} export class Bar {...} Normal exports can be imported in two ways: namespace [1] imports and named imports (looks similar to destructuring). Namespace imports import * as Baz from './baz'; Named imports import {Foo, Bar} from './baz'; Default exports class Foo {...} class Bar {...}
Understanding a variable that is outside an export within an imported file
问题 Auth0 has some great documentation for its new javascript sdk to be used with Vue. See the Vue Quickstart page. I'm confused by something they do with a variable that is outside the "export" of an imported module. Where does the instance variable live? Is it a global variable? Is it only available to the imported file itself? If you import this module multiple times, I'd think it would run the let instance each time. I must be misunderstanding how import works. src/auth/index.js import Vue
setting content type for static javascript files in express
问题 I am using express to serve up a page with js files using es6 modules. About es6 modules - https://jakearchibald.com/2017/es-modules-in-browsers/ my server.js file is - const app = express(); app.use( express.static( __dirname + '/src' )); app.get('*', (req, res) => { res.sendFile(path.join(__dirname + '/index.html')); }); app.listen(8080, () => console.log('Listening on port 8080!')); and my index.html is - <html lang="en"> <body> <script type="module" src="./src/test.js"></script> </body> <
Why pm2 ignored the --experimental-modules passed to node in the ecosystem.config.js file?
问题 This is my main.js file: import Koa from "koa"; const app = new Koa(); app.use(async ctx => ctx.body = "Hello, World!"); app.listen(3000); This is my package.json file: { "type": "module", "name": "koa-sandbox", "version": "1.0.0", "description": "", "main": "./src/main.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1", "start": "node --experimental-modules ./src/main.js" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "koa": "^2.7.0" } } It works
Enqueue javascript with type=“module”
问题 I want to use countUp.js on my custom theme in wordpress. When I add the file with wp_enqueue_script(), i get an error: Uncaught SyntaxError: Unexpected token 'export' I've read that it can be fixed setting on the label type="module" , but I don't know how to do that, as that option does'nt exixst in wp_enqueue_script... Anyone can hel me? 回答1: One can add attributes to a script by applying filter 'script_loader_tag'. Use add_filter('script_loader_tag', 'add_type_attribute' , 10, 3); to add
Are import values disconnected from their export values still read-only?
问题 Given is the following module structure: // module A: export let a = 1; // named export export function inc() { a++; } // named export // module B: let b = 1; export default b; // default export (equivalent to `export default 1`) export function inc() { b++; } // named export // module C: let c = {}; export default c; // default export // module E: import a, {inc as incA} from "./A"; import b, {inc as incB} from "./B"; import c from "./C"; incA(); console.log(a); // logs 2, because "a" has a
Are import values disconnected from their export values still read-only?
问题 Given is the following module structure: // module A: export let a = 1; // named export export function inc() { a++; } // named export // module B: let b = 1; export default b; // default export (equivalent to `export default 1`) export function inc() { b++; } // named export // module C: let c = {}; export default c; // default export // module E: import a, {inc as incA} from "./A"; import b, {inc as incB} from "./B"; import c from "./C"; incA(); console.log(a); // logs 2, because "a" has a
Are import values disconnected from their export values still read-only?
问题 Given is the following module structure: // module A: export let a = 1; // named export export function inc() { a++; } // named export // module B: let b = 1; export default b; // default export (equivalent to `export default 1`) export function inc() { b++; } // named export // module C: let c = {}; export default c; // default export // module E: import a, {inc as incA} from "./A"; import b, {inc as incB} from "./B"; import c from "./C"; incA(); console.log(a); // logs 2, because "a" has a