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How to make Analogue clock in react js


In this article,we are going to make custom Analogue clock with moment js .this code is divided into two sections ,one is myClock and other is App.js


App.js file is displayed below:

1import "./styles.css";
2import moment from "moment"
3import  Analogue from './Analogue'
4
5
6import React from "react";
7 
8class App extends React.Component {
9 constructor(props)
10 {
11   super(props);
12   this.state={
13    time: moment().format("LTS"),
14    rawTime: moment().format("LTS").replace(" PM", "").replace(" AM", "")
15   }
16 };
17 
18 componentWillMount() {
19  this.intervalID = setInterval(() => this.tick(), 1000);
20}
21componentWillUnmount() {
22  clearInterval(this.intervalID);
23}
24
25tick() {
26  this.setState({
27    time: moment().format("LTS"),
28    rawTime: moment().format("LTS").replace(" PM", "").replace(" AM", "")
29  });
30}
31  render() {
32    return <>
33     <div className="App">
34        <Analogue time={this.state.time} rawTime={this.state.rawTime} />
35        <br />
36        <br />
37        <br />
38      </div>
39
40    </>;
41  }
42}
43 
44export default App;

Analogue.js file is displayed below

1import React ,{ Component }  from "react";
2 class Analogue extends React.Component {
3  constructor(props)
4  {
5    super(props);
6    this.state = {
7      degreesPerTick: 360 / 60,
8      hour: this.props.rawTime.split(":")[0],
9      minute: this.props.rawTime.split(":")[1],
10      second: this.props.rawTime.split(":")[2],
11      hourRotation: 0,
12      minuteRotation: 0,
13      secondRotation: 0
14    };
15  };
16  componentWillMount() {
17    this.intervalID = setInterval(() => this.updateRotation(), 1000);
18  }
19
20  componentWillUnmount() {
21    clearInterval(this.intervalID);
22  }
23  updateRotation() {
24    this.setState(
25      {
26        hour: this.props.rawTime.split(":")[0],
27        minute: this.props.rawTime.split(":")[1],
28        second: this.props.rawTime.split(":")[2],
29        hourRotation:
30          this.state.hour * this.state.degreesPerTick +
31          this.state.degreesPerTick,
32        minuteRotation:
33          this.state.minute * this.state.degreesPerTick +
34          this.state.degreesPerTick,
35        secondRotation:
36          this.state.second * this.state.degreesPerTick +
37          this.state.degreesPerTick
38      },
39      () => {
40        root.style.setProperty(
41          "--hourRotate",
42          rotate(${this.state.hourRotation}deg)
43        );
44        root.style.setProperty(
45          "--minuteRotate",
46          rotate(${this.state.minuteRotation}deg)
47        );
48        root.style.setProperty(
49          "--secondRotate",
50          rotate(${this.state.secondRotation}deg)
51        );
52      }
53    );
54  }
55  render() {
56    return <>
57    <div className="analog">
58        <div className="analog-housing" />
59        <div className="analog-face">
60          <div className="analog-hands">
61            <div className="analog-hour" />
62            <div className="analog-minute" />
63            <div className="analog-second" />
64          </div>
65          <div className="analog-center" />
66        </div>
67      </div>
68
69    </>;
70  }
71}
72 
73export default Analogue;

Here is the link of live example which we done so far:
Click here

About

Moiz is a software engineer from Arid University with a passion for writing tech tutorials and doing coding. I am continously produce JavaScript and other web development technology tutorials in concepts through easy-to-understand explanations written in plain English.I have expertise in next js ,react js ,javascript,html,bootstrap and node js.

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Hassan is a software engineer from kohat university of science and technology with a passion for writing tech tutorials and doing javascript practices on daily basis.I have expertise in next js ,react js ,javascript,html,bootstrap and node js. Problem Solving and making concpets is my strong point.

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