Using *ngFor in TypeScript code

Hello there, I have a question about performing the logic of *ngFor in typescript. Is it possible to loop through data from my JSON API in the typescript file similar to how *ngFor works in HTML? Any guidance on this matter would be greatly appreciated. Thank you in advance.

Answer №1

The *ngFor directive is utilized in the template to iterate through elements in an array. If you wish to loop over items in TypeScript, you can achieve this as follows:

for(let element of this.result){

}

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

When the promise is resolved, the members of the AngularJS controller are now

I'm experiencing some unexpected behavior in my controller when executing a certain method. The code snippet looks something like this: this.StockService.GetByInvoicesID(this.SelectedInvoice.ID).success((StockItems) => { this.StockItems = Stoc ...

The outcome of a promise is an undefined value

I am facing an issue where I need to access the result of my API call outside the promise, but the value I receive is always undefined. Within the OrderService : public async getOrderPrice(device: string) : Promise<any> { this.urlOrderPrice = th ...

Adding JSON Objects in Python

In Python 3.8, I have successfully loaded two JSON files and now need to merge them based on a specific condition. Obj1 = [{'account': '223', 'colr': '#555555', 'hash': True}, {'account': ...

Is there a reason why I am unable to include a URL as a JSON element in the data attribute of an AJAX request?

I'm working on an ajax request where I pass data to the data property in this manner: var myData = { "ID": 123456, "Description": "Some description", "Name": "Product Name", "ImageUrl": "http://example.c ...

Python script for converting log.txt file to JSON

Currently in the process of learning Python with a limited programming background, I have taken on a challenging project. The task at hand involves converting a system log stored in a .txt file into JSON format. The ultimate goal is to create a Python pro ...

Unraveling the mystery of decoding the yen symbol in JSON

In my Python code, I encountered an error while parsing a JSON file due to the character ¥. The specific error message I received was related to Unicode decoding: UnicodeDecodeError: 'utf8' codec can't decode byte 0xa5 in position 106: inv ...

Creating callback functions that vary based on input variables

Consider the following code snippet, which may seem somewhat contrived: arbitraryFunction( // Input that is dynamically generated [ returnValue("key1", "a"), returnValue("key2", 1), returnValue ...

Tips for resolving the error message "Cannot use type 'string' to index type"

Currently, I am in the process of migrating a website from React to Next.js, and I am facing challenges when it comes to implementing i18n for SSR pages. I am following a tutorial provided at this link: I have already set up a lang folder and placed some ...

Navigating with query parameters in Angular 5

Currently, I am developing my angular 5+ application and utilizing the AuthGuardService. My scenario involves redirecting from another php application that sends form data through a query string. http://localhost:44200/#/users/save?first_name=John&las ...

Steer clear of repeatedly retrieving data from JSON sources

While parsing JSON data from the server in MainActivity, I encountered an issue when switching to another Activity and then returning to MainActivity. The problem is that it re-hits the JSON URL and fetches the data again. Why is this happening when I hav ...

How to conceal the side navigation bar on specific pages or components within an Angular application

Currently immersed in developing a web application with Jhipster and Angular. I've managed to set up a side navbar along with a top navbar on every page. However, I'm struggling to hide the side navbar on specific pages and could use some guidanc ...

Tips on using JQuery to extract form field information from a drop-down menu, display it in a div, and then compare it with the subsequently

In my HTML file, I am using two dropdown lists and JQuery for validation. First, I need to save the selected items from both dropdown lists in a variable and then compare them with the next selection. If the data from both dropdown lists match, an alert m ...

The role of the colon in extracting data from an AJAX request

Curiosity arises around the usage of the colon, :, in data. It is clear that the data is sent to list.php, but the exact process remains unclear. function paint(val){ $(".loading").css("display","block"); $.ajax({ type:"POST", ...

Verify if an object property is called with the toHaveBeenCalledWith() function in Jasmine

Recently started incorporating Jasmine into my workflow and I am trying to verify if my method was called with an object that includes a MyProperty property. Currently, my setup looks like this: expect(service['method']).toHaveBeenCalledWith(jasm ...

The data type 'string' cannot be assigned to the data type 'Position'

Currently, I am in the process of converting React js to typescript. The component being used is a Class Component. I would like to obtain CSS settings through props and apply them to an element. How can I resolve this issue? render(){return( <span st ...

Angular 11 is indicating that the type 'File | null' cannot be assigned to the type 'File'

Hey there, I'm currently diving into Angular and I'm working on an Angular 11 project. My task involves uploading a CSV file, extracting the records on the client side, and saving them in a database through ASP.NET Web API. I followed a tutorial ...

What is the solution for resolving the JavaScript runtime error '0x800a1391 - 'require' is undefined'?

As a C# developer with limited web experience, I am currently diving into learning Typescript. However, I seem to be facing a roadblock in the form of an error message. 0x800a1391 - JavaScript runtime error: 'require' is undefined To provide so ...

Saving JSON information to a file through Java

Currently in my Java code, I am making a call to a REST API Get method and I need to save the JSON data retrieved into a file. Below is an example of the JSON data: { "took" : 25, "timed_out" : false, "_shards" : { "total" : 5, "successful" : 5, "fa ...

What is the most effective method to escape double quotes in a string when passing it to an external program using PowerShell, especially with a JSON string involved?

Despite reading numerous articles on escaping strings in PowerShell, I have yet to find a satisfactory solution. For example, say I have a file named foo.json that contains a JSON string. My goal is to pass this JSON string as an argument to a program. I ...

Unit testing Firebase function with Jest for mocking

Currently, I am in the process of developing unit tests and facing challenges with mocking Firebase functions while specifying the return type upon calling them. The code snippet below illustrates what I intend to mock (account.service.ts) and provides ins ...