react fetch request code example
Example 1: fetch api react
import React, { Component, Fragment } from 'react';
export class FetchJsonController extends Component
{
constructor(props) {
super(props);
this.state = {
data: null,
};
}
componentDidMount() {
fetch(this.props.src)
.then(response => response.json())
.then(data => {
console.log(data);
this.setState({ data })
});
}
render() {
const _data = this.state.data;
const children = React.Children.map(this.props.children, child => {
return React.cloneElement(child, {
jsonData: _data
});
});
return (
<div>{ children }</div>
)
}
}
<FetchJsonController src="somefile.json">
<SomeComponent />
</FetchJsonController>
Example 2: React get method
componentWillMount(){
fetch('/getcurrencylist',
{
method: "get",
dataType: 'json',
})
.then((res) => res.json())
.then((data) => {
var currencyList = [];
for(var i=0; i< data.length; i++){
var currency = data[i];
currencyList.push(currency);
}
console.log(currencyList);
this.setState({currencyList})
console.log(this.state.currencyList);
})
.catch(err => console.log(err))
}