ecmascript-6

问题 Hi I am working with an API that retrieves the URL of an image. I am then trying to pass that URL into an tag as follows: <img class="img-fluid" src={this.state.representatives[i].pic}/> Locally I am met with But when I try to use the app on AWS Amplify, I am met with: I have tried hardcoding the URL into the app but it returns the same error. I am really confused where to go from here. For example the image URL pulled from the API for Mark Warner is http://bioguide.congress.gov/bioguide

问题 There are several modules that are connected to app.js, for example the code that is inside: var test = "TEST"; Here is my webpack.config: module.exports = { entry: './src/app.js', output: { filename: './dist/bundle.js' } }; The problem is that when I try to call my test variable in the developer console, I get an error: Something about the scope, when I connect app.js directly - everything works, what's the problem and how to fix it? 回答1: Yes, this is a scope problem. There are two ways to

问题 There are several modules that are connected to app.js, for example the code that is inside: var test = "TEST"; Here is my webpack.config: module.exports = { entry: './src/app.js', output: { filename: './dist/bundle.js' } }; The problem is that when I try to call my test variable in the developer console, I get an error: Something about the scope, when I connect app.js directly - everything works, what's the problem and how to fix it? 回答1: Yes, this is a scope problem. There are two ways to

问题 I am trying to make my Vuejs application work on IE11. However, one node module ( vue-directive-tooltip ) throw an error on IE11: Object doesn't support property or methode "replace" The module is supposed to be IE11 compatible. I have tried to require the polyfill I need at the top of the entry point to my application. I have also tried to add the node module to the transpile dependencies. vue.config.js: require("@babel/polyfill"); configureWebpack: { entry: ["@babel/polyfill", path.resolve(

问题 This answer: How can I use ES6 in webpack.config.js? seems to imply a transpilation step. Can ES6 be used natively? How? For example I tried to convert the simple example here from require to import and receive the following error (function (exports, require, module, __filename, __dirname) { import path from 'path' ^^^^ SyntaxError: Unexpected identifier 回答1: You should use webpack-cli --config-register (-r) to allow that. To use that flag, you must have babel-register installed. webpack -

问题 When using ES6 modules and export default class how is it possible to call a static method from another method within the same class? My question refers specifically to when the class is marked as default (unlike es6 call static methods) The below example illustrates how it is possible to call the static method from a non-static method when not using default, i.e. Test.staticMethod() ? export default class { static staticMethod(){ alert('static'); } nonStaticMethod(){ // will not work because

问题 I am trying to achieve this : While trying, I created an JavaScript Object(JSON like object) to access it. Here's the code: export default [ { weekMonth: 'February', weekDayofWeek: ['Thur', 'Thur', 'Thur', 'Thur'], weekDays: [ '04', '11', '18', '25'], weekStatus: 'Available +', className: 'February' }, { weekMonth: 'March', weekDayofWeek: ['Thur', 'Thur', 'Thur', 'Thur'], weekDays: [ '04', '11', '18', '25'], weekStatus: 'Available +', className: 'March' }, { weekMonth: 'April', weekDayofWeek:

问题 This question already has answers here : When should I use curly braces for ES6 import? (11 answers) Closed 3 years ago . What is the difference between: import Title from './title.js' and import { Title } from './title.js' ? I think it has some connection with export default Title; and export const Title; but I don't know. 回答1: as given in developer.mozilla.org It is possible to have a default export (whether it is an object, a function, a class, etc.). The import statement may then be used

问题 This question already has answers here : toLocaleString not working on numbers less than 10000 in all browsers (2 answers) Closed 1 year ago . I'm trying to format a number using the Intl.NumberFormat . I have checked MDN WebDocs but I'm not able to get the response I guess it should return. I'm formatting with spanish locale, and I want to get the point separator between thousands (using useGrouping option), however, I'm not getting it Expected result: 1.124,50 € Obtained result: 1124,50 €

问题 This question already has answers here : toLocaleString not working on numbers less than 10000 in all browsers (2 answers) Closed 1 year ago . I'm trying to format a number using the Intl.NumberFormat . I have checked MDN WebDocs but I'm not able to get the response I guess it should return. I'm formatting with spanish locale, and I want to get the point separator between thousands (using useGrouping option), however, I'm not getting it Expected result: 1.124,50 € Obtained result: 1124,50 €