Mixing
How to save a list of json data that i get from an API to a class property using fetch
I'm trying to call a localhost API that i created in my react app class. This API will return a list of json data, i'm trying to save these results in a property
I don't know much about Reacjs. What i have tried so far is to create a method that will call the API and return the data, the i call this method in my class and save the results in a property.
The type of this method is Promise since the results that i'm expectibng are a list of data :
let items: any;
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling')
.then((response) => response.json())
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
getIncidentsFromApiAsync().then(json => items = json);
}
}
I haven't been able to see the results since items is always undefined after calling getIncidentsFromApiAsync() method.
json reactjs typescript
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
add a comment |
I'm trying to call a localhost API that i created in my react app class. This API will return a list of json data, i'm trying to save these results in a property
I don't know much about Reacjs. What i have tried so far is to create a method that will call the API and return the data, the i call this method in my class and save the results in a property.
The type of this method is Promise since the results that i'm expectibng are a list of data :
let items: any;
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling')
.then((response) => response.json())
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
getIncidentsFromApiAsync().then(json => items = json);
}
}
I haven't been able to see the results since items is always undefined after calling getIncidentsFromApiAsync() method.
json reactjs typescript
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
add a comment |
I'm trying to call a localhost API that i created in my react app class. This API will return a list of json data, i'm trying to save these results in a property
I don't know much about Reacjs. What i have tried so far is to create a method that will call the API and return the data, the i call this method in my class and save the results in a property.
The type of this method is Promise since the results that i'm expectibng are a list of data :
let items: any;
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling')
.then((response) => response.json())
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
getIncidentsFromApiAsync().then(json => items = json);
}
}
I haven't been able to see the results since items is always undefined after calling getIncidentsFromApiAsync() method.
json reactjs typescript
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
I'm trying to call a localhost API that i created in my react app class. This API will return a list of json data, i'm trying to save these results in a property
I don't know much about Reacjs. What i have tried so far is to create a method that will call the API and return the data, the i call this method in my class and save the results in a property.
The type of this method is Promise since the results that i'm expectibng are a list of data :
let items: any;
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling')
.then((response) => response.json())
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
getIncidentsFromApiAsync().then(json => items = json);
}
}
I haven't been able to see the results since items is always undefined after calling getIncidentsFromApiAsync() method.
json reactjs typescript
json reactjs typescript
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
asked Jan 2 at 10:03
Soufien HajjiSoufien Hajji
114111
114111
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can handle this in React using State and lifecycle method componentDidMount that gets called when the component is ready:
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling').then(
(response) => response.json()
);
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
this.state = {
items:
};
}
componentDidMount() {
getIncidentsFromApiAsync().then(json => this.setState({ items: json });
}
render() {
if (this.state.items.length) {
const itemsList = this.state.items.map((item) => <li key={item}>{item}</li>);
return (
<div>
<ul>{itemsList}</ul>
</div>
);
}
return <div>List is not available</div>;
}
}
answered Jan 2 at 10:24
OlgaOlga
605
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can handle this in React using State and lifecycle method componentDidMount that gets called when the component is ready:
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling').then(
(response) => response.json()
);
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
this.state = {
items:
};
}
componentDidMount() {
getIncidentsFromApiAsync().then(json => this.setState({ items: json });
}
render() {
if (this.state.items.length) {
const itemsList = this.state.items.map((item) => <li key={item}>{item}</li>);
return (
<div>
<ul>{itemsList}</ul>
</div>
);
}
return <div>List is not available</div>;
}
}
answered Jan 2 at 10:24
OlgaOlga
605
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
add a comment |
You can handle this in React using State and lifecycle method componentDidMount that gets called when the component is ready:
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling').then(
(response) => response.json()
);
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
this.state = {
items:
};
}
componentDidMount() {
getIncidentsFromApiAsync().then(json => this.setState({ items: json });
}
render() {
if (this.state.items.length) {
const itemsList = this.state.items.map((item) => <li key={item}>{item}</li>);
return (
<div>
<ul>{itemsList}</ul>
</div>
);
}
return <div>List is not available</div>;
}
}
answered Jan 2 at 10:24
OlgaOlga
605
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
add a comment |
You can handle this in React using State and lifecycle method componentDidMount that gets called when the component is ready:
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling').then(
(response) => response.json()
);
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
this.state = {
items:
};
}
componentDidMount() {
getIncidentsFromApiAsync().then(json => this.setState({ items: json });
}
render() {
if (this.state.items.length) {
const itemsList = this.state.items.map((item) => <li key={item}>{item}</li>);
return (
<div>
<ul>{itemsList}</ul>
</div>
);
}
return <div>List is not available</div>;
}
}
answered Jan 2 at 10:24
OlgaOlga
605
You can handle this in React using State and lifecycle method componentDidMount that gets called when the component is ready:
function getIncidentsFromApiAsync(): Promise<any>{
return fetch('http://localhost:3978/calling').then(
(response) => response.json()
);
}
export class App extends React.Component<{}, IDetailsListCustomColumnsExampleState> {
constructor(props: {}) {
super(props);
this.state = {
items:
};
}
componentDidMount() {
getIncidentsFromApiAsync().then(json => this.setState({ items: json });
}
render() {
if (this.state.items.length) {
const itemsList = this.state.items.map((item) => <li key={item}>{item}</li>);
return (
<div>
<ul>{itemsList}</ul>
</div>
);
}
return <div>List is not available</div>;
}
}
answered Jan 2 at 10:24
OlgaOlga
605
edited Jan 2 at 10:31
answered Jan 2 at 10:24
OlgaOlga
605
answered Jan 2 at 10:24
OlgaOlga
605
answered Jan 2 at 10:24
OlgaOlga
605
605
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
add a comment |
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
Thanks. After a small issue with CORS in my server it worked !
– Soufien Hajji
Jan 2 at 11:13
add a comment |
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