angular

问题 I want to read contents of zip file that contains multiple files and merge content from all the files and assign it to local variable. But local variable is not in scope in below code: const jsZip = require('jszip'); jsZip.loadAsync(fileList[0]).then(function (zip) { Object.keys(zip.files).forEach(function (filename) { zip.files[filename].async('string').then(function (fileData) { this.fileData = this.fileData + '**$$##$$**' + fileData; }); }); }); 'this' is undefined here because this is

问题 I am working on a sample Angular 2 application , and using ngrx/store , ngrx/effects for state management. Below image depicts one of the screens of my application. In order to display books list , categories and authors from the server, below dispatch calls are made to the store. this.store.dispatch(loadCatgories()); this.store.dispatch(loadAuthors()); this.store.dispatch(loadBooks()); And below the are the related effects @Effect() authors$ = this.actions$ .ofType(AuthorActionTypes.LOAD

问题 I want to read contents of zip file that contains multiple files and merge content from all the files and assign it to local variable. But local variable is not in scope in below code: const jsZip = require('jszip'); jsZip.loadAsync(fileList[0]).then(function (zip) { Object.keys(zip.files).forEach(function (filename) { zip.files[filename].async('string').then(function (fileData) { this.fileData = this.fileData + '**$$##$$**' + fileData; }); }); }); 'this' is undefined here because this is

问题 I have my angular app running inside docker that exposed on port 83, and I also have a spring-boot rest app inside another docker that exposed on port 8083. In the host server I have one Nginx server that reroute every requests using below config: server { listen 80; server_name mydomain.com; location / { proxy_pass http://127.0.0.1:83; } } server { listen 80; server_name rest.mydomain.com; location / { proxy_pass http://127.0.0.1:8083; } } With above config, every request that uses mydomain

问题 I have my angular app running inside docker that exposed on port 83, and I also have a spring-boot rest app inside another docker that exposed on port 8083. In the host server I have one Nginx server that reroute every requests using below config: server { listen 80; server_name mydomain.com; location / { proxy_pass http://127.0.0.1:83; } } server { listen 80; server_name rest.mydomain.com; location / { proxy_pass http://127.0.0.1:8083; } } With above config, every request that uses mydomain

问题 I'm trying to upload image or video in Angular. I wanted to display its preview. I have no problem in previewing the image, my problem is how can i preview the video? Please see this stackblitz link: CLICK HERE CODE onSelectFile(event) { if (event.target.files && event.target.files[0]) { var reader = new FileReader(); reader.readAsDataURL(event.target.files[0]); reader.onload = (event) => { this.url = event.target.result; } } } 回答1: You can decide if the file is type of video/image and then

问题 I have an angular component showing items in a list. Each itemn can be selected and the ids of the selected items will be stored in the state. So my state object looks like this f.e.: { items: Item[]; selected: string[] } Now I got an action called DeleteSelectedAction that gets selected as payload. This action will call some WebAPI using an effect and so on. Now I found two ways how I could do this. First: Select selected from store and subscribe to it and pass the value with the action

问题 I have a scenario that i need to show dropdowns with selected or default values in view if there is any data from API. And i can add new dropdowns using add button. But i have to select value from drop downs only once so it will not repeated. I am using ngFor loop to show this drop downs and i am using splice method to remove selected options from drop down. And i am facing a issue here that Example: If i select car 1 from 1st drop down 1 and the 2nd drop down i can not see car 1 but if i go

问题 I have an Order screen where I have a list of items to buy. In front of every item, I have a plus and minus button and an input field where I can specify the quantity of the item I need to buy. I am using *ngFor to iterate through an array and display the items. Even I am creating plus button, minus button and an input text field for that item using this *ngFor. I am using 2-way data binding to get and set the data into the input field. But, the issue is, when I click the increment button,

问题 I have an Order screen where I have a list of items to buy. In front of every item, I have a plus and minus button and an input field where I can specify the quantity of the item I need to buy. I am using *ngFor to iterate through an array and display the items. Even I am creating plus button, minus button and an input text field for that item using this *ngFor. I am using 2-way data binding to get and set the data into the input field. But, the issue is, when I click the increment button,