Created
May 23, 2018 04:33
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import React, { Component } from 'react'; | |
class Clock extends React.Component { | |
constructor(props) { | |
super(props); | |
const currentTime = new Date() | |
this.state = { | |
hours: currentTime.getHours(), | |
minutes: currentTime.getMinutes(), | |
seconds: currentTime.getSeconds(), | |
ampm: currentTime.getHours() >= 12 ? 'pm': 'am' | |
}; | |
this.setTimer(); | |
} | |
setTimer() { | |
//will run for 1 second and then call updateClock | |
setTimeout(this.updateClock.bind(this), 1000); | |
} | |
updateClock() { | |
//After one second it will update the Clock by one second | |
const currentTime = new Date(); | |
this.setState({ | |
hours: currentTime.getHours(), | |
minutes: currentTime.getMinutes(), | |
seconds: currentTime.getSeconds(), | |
ampm: currentTime.getHours() >= 12 ? 'pm' : 'am' | |
}, this.setTimer()); | |
} | |
render() { | |
const {hours, minutes, seconds, ampm} = this.state; | |
return( | |
<div className="clock"> { | |
hours == 0 ? 12: (hours > 12) ? | |
hours - 12: hours | |
}: | |
{ | |
minutes > 9 ? minutes: `0${minutes}` | |
}: | |
{ | |
seconds > 0 ? seconds: `0${seconds}` | |
} | |
{ampm} | |
</div> | |
) | |
} | |
} | |
export default Clock; |
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