A react based on-screen number pad.
npm install react-numberpadnpm i react-numberpad
import React from 'react';
import { render } from 'react-dom';
import Numpad from '../../src';
class App extends React.Component {
constructor() {
super();
this.state = {
value: '0'
};
this.changeValue = this.changeValue.bind(this);
}
changeValue(numText) {
let value = this.state.value;
if (numText === '<') {
value = value.slice(0, -1);
if (!value) {
value = '0';
}
} else if (numText === '.') {
if (value.indexOf('.') === -1) {
value += numText;
}
} else {
if (value === '0') {
value = '';
}
value += numText;
}
if (value.indexOf('.') !== -1) {
value = value.substring(0, value.indexOf('.') + 3); // for upto 2 decimal places
}
this.setState({ value });
}
render() {
return (
{this.state.value}
);
}
}
render(
`
html reference
`
7
8
9
4
5
6
1
2
3
0
.
<
``