Navigating JSON Arrays in Angular 10

Question

Navigating JSON Arrays in Angular 10

Recently, I started diving into Angular10 and encountered a challenge while trying to iterate through a JSON object.

The JSON object in question:

[
{
ID: "2",
testata: "Corriere.it - Homepage",
url: "http://xml2.corriereobjects.it/rss/homepage.xml",
categoria: "QUOTIDIANI"
},
{
ID: "3",
testata: "Open",
url: "https://www.open.online/feed/",
categoria: "NEWS"
},
{
ID: "4",
testata: "ANSA.it",
url: "https://www.ansa.it/sito/ansait_rss.xml",
categoria: "NEWS"
}
]

An excerpt from my Angular code:

this.httpClient.get('http://localhost/myjson.json').subscribe(data => {                     
                datax.forEach(element => {              
                console.log(element.url);
            });

The error message displayed:

error TS2339: Property 'forEach' does not exist on type 'Object'.
datay.forEach(element => {

arrays json angular typescript

Answer 1

Answer №1

To address the issue temporarily, please implement the following code modification:

this.fetchDataFromServer().subscribe((data: any)=> {                     
            data.forEach(item => {              
            console.log(item.url);
        });
});

When working with Typescript, it's important to specify the expected response type. If not specified, TypeScript will assume it as an object.

Additionally, avoid using any for typing values in your code. Instead, make use of appropriate typing for better code quality.

Answer 2

To address the issue temporarily, please implement the following code modification:

this.fetchDataFromServer().subscribe((data: any)=> {                     
            data.forEach(item => {              
            console.log(item.url);
        });
});

When working with Typescript, it's important to specify the expected response type. If not specified, TypeScript will assume it as an object.

Additionally, avoid using any for typing values in your code. Instead, make use of appropriate typing for better code quality.

Answer 3

Answer №2

It appears that the issue lies in your naming convention within the response declaration. You have referred to it as 'data' but later attempt to use it as 'datax'.

Answer 4

It appears that the issue lies in your naming convention within the response declaration. You have referred to it as 'data' but later attempt to use it as 'datax'.

Navigating JSON Arrays in Angular 10

Answer №1

Answer №2

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