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How can I create i simple spinner using react js?

Let say that I have code like this :

 let cars = [
      {id: 1, name: "Golf"},
      {id: 2, name: "Audi"},
      {id: 3, name: "Passat"},
      {id: 4, name: "Bmw"}
    ];

class Test extends React.Component {
        constructor(props){
        super(props);

      this.state = {
        loading: true
      }
    }

    ponentDidMount(){
        this.setState({loading: false})
    }

        render(){
        let content = this.state.loading ? <div>Loading</div> : cars.map((c, i) => <div key={i}>{c.name}</div>)

        return (
        <div>{content}</div>
      )
    }
}

React.render(<Test />, document.getElementById('container'));

And I'm trying to show loading while the list of cars isn't loaded.

Here is fiddle

Any idea?

How can I create i simple spinner using react js?

Let say that I have code like this :

 let cars = [
      {id: 1, name: "Golf"},
      {id: 2, name: "Audi"},
      {id: 3, name: "Passat"},
      {id: 4, name: "Bmw"}
    ];

class Test extends React.Component {
        constructor(props){
        super(props);

      this.state = {
        loading: true
      }
    }

    ponentDidMount(){
        this.setState({loading: false})
    }

        render(){
        let content = this.state.loading ? <div>Loading</div> : cars.map((c, i) => <div key={i}>{c.name}</div>)

        return (
        <div>{content}</div>
      )
    }
}

React.render(<Test />, document.getElementById('container'));

And I'm trying to show loading while the list of cars isn't loaded.

Here is fiddle

Any idea?

• javascript
• reactjs

Share Improve this question Follow asked Nov 21, 2016 at 16:03 BokyBoky 12.1k3030 gold badges101101 silver badges171171 bronze badges 1

• 1 Put in a spinner image instead of the text "loading"? – Dave Newton Commented Nov 21, 2016 at 16:05

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 5

You can use setTimeout to simulate async request

ponentDidMount(){
    setTimeout(() => { 
      this.setState({loading: false})
    },2000)
} // simulate loading

Worked Fiddle

Thanks

Reactjs is all about a concept called ponents. So what is a React ponent?

A React ponent is a function or a class.

The purpose of a ponent which is a class or a function is to produce html that we are going to show to the user. Its secondary purpose is to handle feedback from the user. For example, anytime a user clicks or drags or types input, any of those types of events.

Anytime we have content that we need to show the user, we are going to write some amount of jsx. JSX is that code that kind of looks like html. In order to handle feedback from the users, we are going to use these software routines called event handlers.

So when you are looking to add a spinner to your Reactjs application, what do you do? You create a spinner ponent and you can do so by creating a file called Spinner.js and the code inside would look something like this:

import React from 'react';

const Spinner = () => {
  return (
    <div className="ui active dimmer">
      <div className="ui big text loader">Loading...</div>
    </div>
  );
};

export default Spinner;

In the above example I am using some classNames taken from Semantic-UI, feel free to check out their documentation. You can then add this Spinner ponent as a ponent instance to your Test ponent like so:

import React from 'react';
import ReactDOM from 'react-dom';
import Spinner from './Spinner';

class Test extends React.Component {
        constructor(props){
        super(props);

  this.state = {
    loading: true
  }
}

ponentDidMount(){
    this.setState({loading: false})
}

    render(){
    let content = this.state.loading ? <Spinner /> : cars.map((c, i) => <div key={i}>{c.name}</div>)

    return (
    <div>{content}</div>
  )
}

}

And that is how you create a simple spinner in Reactjs.

with very short code I could generate wait spinner in react ponent

getSpinner:function(){
 return ( this.state.loadingTree?
    <div><img style={{width: '90px', objectFit: 'scale-down', 
     position:'absolute',opacity:'0.95', align: 'middle' }} src= 
    {"/images/spinner.gif"}/></div>:""
 );
},

render(){
   return(){
    <div style={{position:'absolute', top:'40%',left:'50%'}}>{this.getSpinner()} 
   </div>};   }

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