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Simple React login-page for testing
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import React, { Component } from 'react'; | |
import './App.css'; | |
class LoginPage extends Component { | |
constructor() { | |
super(); | |
this.state = { | |
username: '', | |
password: '', | |
error: '', | |
}; | |
this.handlePassChange = this.handlePassChange.bind(this); | |
this.handleUserChange = this.handleUserChange.bind(this); | |
this.handleSubmit = this.handleSubmit.bind(this); | |
this.dismissError = this.dismissError.bind(this); | |
} | |
dismissError() { | |
this.setState({ error: '' }); | |
} | |
handleSubmit(evt) { | |
evt.preventDefault(); | |
if (!this.state.username) { | |
return this.setState({ error: 'Username is required' }); | |
} | |
if (!this.state.password) { | |
return this.setState({ error: 'Password is required' }); | |
} | |
return this.setState({ error: '' }); | |
} | |
handleUserChange(evt) { | |
this.setState({ | |
username: evt.target.value, | |
}); | |
}; | |
handlePassChange(evt) { | |
this.setState({ | |
password: evt.target.value, | |
}); | |
} | |
render() { | |
// NOTE: I use data-attributes for easier E2E testing | |
// but you don't need to target those (any css-selector will work) | |
return ( | |
<div className="Login"> | |
<form onSubmit={this.handleSubmit}> | |
{ | |
this.state.error && | |
<h3 data-test="error" onClick={this.dismissError}> | |
<button onClick={this.dismissError}>✖</button> | |
{this.state.error} | |
</h3> | |
} | |
<label>User Name</label> | |
<input type="text" data-test="username" value={this.state.username} onChange={this.handleUserChange} /> | |
<label>Password</label> | |
<input type="password" data-test="password" value={this.state.password} onChange={this.handlePassChange} /> | |
<input type="submit" value="Log In" data-test="submit" /> | |
</form> | |
</div> | |
); | |
} | |
} | |
export default LoginPage; |
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