react for loop code example
Example 1: map function in react
function NameList() {
const names = ['Bruce', 'Clark', 'Diana']
return (
<div>
{names.map(name => <h2>{name}</h2>)}
</div>
)
}
Example 2: react for loop in render
render: function() {
const elements = ['one', 'two', 'three'];
return (
<ul>
{elements.map((value, index) => {
return <li key={index}>{value}</li>
})}
</ul>
)
}
Example 3: react for loop
<tbody>
{[...Array(10)].map((x, i) =>
<ObjectRow key={i} />
)}
</tbody>
Example 4: react render for loop
[...Array(n)].map((_, index) => <span key={index}>element {index}</span>)
Example 5: react loop through array
this.items = this.state.cart.map((item, key) => <li key={item.id}>{item.name}</li>);
Example 6: change items loop react
import React from 'react';
import './HomePage.scss'
import { Col,Row, Button, Container } from "reactstrap";
let image1 = require("../../Assets/image1.jpg");
let image2 = require("../../Assets/image2.jpg");
let image3 = require("../../Assets/image3.png");
let image4 = require("../../Assets/image4.jpg");
export default class HomePage extends React.Component {
constructor(props) {
super(props);
this.state = {
imagesItems: [image1,image2,image3,image4],
imgChange:image1,
imageIndex:0
componentDidMount=() => {
let totallSize= this.state.imagesItems.length-1;
setInterval(() => {
if(this.state.imageIndex === totallSize){
this.setState({imageIndex: 0})
}else{
this.setState({imageIndex: this.state.imageIndex + 1})
}
}, 3000);
}
render() {
return (
<Container >
<div className={"imageDiv"} >
<img src={this.state.imagesItems[this.state.imageIndex]} className="imgClass" />
</div>
</Container>
);
}
}