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HTML 

              
                <script src="https://cdn.freecodecamp.org/testable-projects-fcc/v1/bundle.js"></script>

<div id="root"></div>
!

CSS 

              
                  body {
    padding-top: 80px;
    font-family: 'Righteous', cursive;
    text-align: center;
    background-color: #6ed0ec;
  }

  h2 {
    font-size: 1.8rem;
    color: white;
    margin-bottom: 10px;
  }

  h1 {
    color: white;
    font-size: 2.1rem;
  }

  .container {
    border: 5px solid #005670;
    margin: 0 auto;
    width: 600px;
    padding: 0 30px 30px 30px;
    border-radius: 15%;
    background-color: #0CA7D3;

  }

  #time-left {
    margin-bottom: 10px;
  }

  #break {
    float: left;
    display: flex;
    flex-direction: column;
  }

  #session {
    float: right;
    display: flex;
    flex-direction: column;
  }

  #inc-dec {
    margin-top: 150px;
  }

  #break-increment {
    margin-right: 340px;
    margin-left: 10px;
  }

  #break-decrement {
    margin-left: -20px;
  }

  #session-increment {
    margin-left: 10px;
  }

  p {
    margin-top: 0;
    margin-bottom: 0;
    font-size: 2rem;
    color: #005670;
  }

  #timer {
    border: 3px solid #005670;
    border-radius: 15%;
    margin-left: 200px;
    margin-right: 200px;
    padding-bottom: 20px;
    font-size: rem;
  }

  #reset {
    margin-top: 10px;
    color: #F95759;
  }

  h3 {
    color: #005670;
    font-size: 3rem;
    margin-top: 0;
  }

  button {
    font-size: 1rem;
    font-family: 'Share Tech Mono', monospace;
    border: none;
    background-color: #005670;
    color: white;
    padding: 5px 10px 5px 10px;
  }

  #copyright {
    font-size: 0.8rem;
    color: dark-grey;
    text-align: center;
    margin-top: 20px;
  }
!

JS 

              
                let min = 0;
    let sec = 0;
    let counter = 0;
    let interval;
    let minutes = 0;
    let timeleft = 0;
    let seconds = 0;

    class App extends React.Component {
      constructor(props) {
        super(props);
        this.state = {
          type: "Session",
          status: "pause",
          sessionMins: "25",
          sessionSec: "00",
          breakMins: "5",
          breakSec: "00",
          displayMins: "25",
          displaySec: "00",
        };
      }

      playAndPauseHandler = () => {
        // start countdown if status = "pause" and change status to "play"
        if (this.state.status === "pause") {
          this.setState({status: "play"});

          minutes = this.state.displayMins;
          seconds = this.state.displaySec;
          timeleft = (parseInt(minutes, 10) * 60) + (parseInt(seconds, 10));
          interval = setInterval(() => countDownSecs(), 1000);

          let convertTotalSeconds = (s) => {
            min = Math.floor(s / 60);
            sec = s%60;
            if (sec < 10) {
              sec = "0"+sec;
            }
            if (min < 10) {
              min = "0"+min;
            }
            this.setState({
              displayMins: min,
              displaySec: sec
            });
            console.log(min + ":" + sec);
          }

          let countDownSecs = () => {
            counter++;
            convertTotalSeconds(timeleft-counter);

            if (counter === timeleft) {
              clearInterval(interval);
              counter = 0;
              let audio = document.getElementById('beep');
              audio.play();
              this.setState({type: "Break"});
              minutes = this.state.breakMins;
              seconds = parseInt(this.state.breakSec) + 1;
              console.log("break ", minutes + seconds);
              timeleft = (parseInt(minutes, 10) * 60) + (parseInt(seconds, 10));
              interval = setInterval(() => breakCountDown(), 1000);
            }
          }

          let breakCountDown = () => {
            counter++;
            convertTotalSeconds(timeleft-counter);
            if (counter === timeleft) {
              clearInterval(interval);
              counter = 0;
              let audio = document.getElementById('beep');
              audio.play();
              this.setState({type: "Session"});
              minutes = this.state.sessionMins;
              seconds = parseInt(this.state.sessionSec) + 1;
              timeleft = (parseInt(minutes, 10) * 60) + (parseInt(seconds, 10));
              console.log("session ", minutes + seconds);
              interval = setInterval(() => countDownSecs(), 1000);
            }
          }
        } else {
          // pause the countdown and change status to "pause"
          if (this.state.status === "play") {
            this.setState({status: "pause"})
            console.log('stop' + min + ":" + sec);
            clearInterval(interval);
            counter = 0;
          }
        }
      }

      resetHandler = () => {
        this.setState({
          type: "Session",
          status: "pause",
          sessionMins: "25",
          sessionSec: "00",
          breakMins: "5",
          breakSec: "00",
          displayMins: "25",
          displaySec: "00",
        });
        clearInterval(interval);
        counter = 0;
        let audio = document.getElementById('beep');
        audio.pause();
        audio.currentTime = 0;
      }

      breakDecrementHandler = () => {
        if (parseInt(this.state.breakMins, 10) > 1) {
          let breakDec = parseInt(this.state.breakMins, 10) - 1;
          this.setState({
            breakMins: breakDec
          });
        }
      }

      sessionDecrementHandler = () => {
        if (parseInt(this.state.sessionMins, 10) > 1 ) {
          let sessionDec = parseInt(this.state.sessionMins, 10) - 1;
          this.setState({
            sessionMins: sessionDec,
            displayMins: sessionDec
          });
        }
      }

      breakIncrementHandler = () => {
        if (parseInt(this.state.breakMins, 10) <= 59) {
          let breakInc = parseInt(this.state.breakMins, 10) + 1;
          this.setState({breakMins: breakInc});
        }
      }

      sessionIncrementHandler = () => {
        if (parseInt(this.state.sessionMins, 10) <= 59) {
          let sessionInc = parseInt(this.state.sessionMins, 10) + 1;
          this.setState({
            sessionMins: sessionInc,
            displayMins: sessionInc
          });
        }
      }

      render() {
        return (
          <div>
            <div className="container">
              <h1>Pomodoro Clock</h1>
              <div id="break">
                <h2 id="break-label">Break Length</h2>
                <p id="break-length">{this.state.breakMins}</p>
              </div>
              <div id="session">
                <h2 id="session-label">Session Length</h2>
                <p id="session-length">{this.state.sessionMins}</p>
              </div>

              <div id="inc-dec">
                <button id="break-decrement" onClick={this.breakDecrementHandler}>-1</button>
                <button id="break-increment" onClick={this.breakIncrementHandler}>+1</button>
                <button id="session-decrement" onClick={this.sessionDecrementHandler}>-1</button>
                <button id="session-increment" onClick={this.sessionIncrementHandler}>+1</button>
              </div>

              <div id="timer">
                <h2 id="timer-label">{this.state.type}</h2>
                <h3 id="time-left">{this.state.displayMins}:{this.state.displaySec}</h3>
                <button id="start_stop" onClick={this.playAndPauseHandler}>Play/Pause</button>
                <div>
                    <button id="reset" onClick={this.resetHandler}>Reset</button>
                </div>
              </div>

              <audio id="beep" src="https://s3.amazonaws.com/freecodecamp/drums/Chord_1.mp3" type="audio/mpeg"></audio>

            </div>
            <p id="copyright">&copy; 2018 Phoebe Voong-Fadel | The Coding Hamster. All rights reserved.</p>
          </div>
        );
      }
    }

    ReactDOM.render(<App />, document.getElementById('root'));
!
999px

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