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import './style.css'
import React from 'react'
import ReactDOM from 'react-dom'
class IPAddress extends React.Component {
constructor(props) {
super(props)
this.state = {
octets: [10, 88, 135, 24],
cidr: 36,
}
}
handleChange = (event) => {
var octets = this.state.octets
var val = +event.target.value.replace(/[^0-9]/g, '')
var octet = event.target.attributes['data-octet'].value
if (octet == 'cidr') {
if (val <= 32) {
this.setState({
cidr: val
})
}
}
else {
if (val <= 255) {
octets[+octet] = val
this.setState({
octets: octets
})
}
}
}
render() {
var pretty = this.state.octets.join('.') + '/' + this.state.cidr
return <form>
<input type="text" data-octet="0" onChange={this.handleChange} value={this.state.octets[0]}/>.
<input type="text" data-octet="1" onChange={this.handleChange} value={this.state.octets[1]}/>.
<input type="text" data-octet="2" onChange={this.handleChange} value={this.state.octets[2]}/>.
<input type="text" data-octet="3" onChange={this.handleChange} value={this.state.octets[3]}/>/
<input type="text" data-octet="cidr" onChange={this.handleChange} value={this.state.cidr}/>
<h2>Result: {pretty}</h2>
</form>
}
}
const app = document.createElement('div')
document.body.appendChild(app)
ReactDOM.render(<IPAddress />, app)
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