"React Controlled Components" Code Answer's
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react how to pass the input target value
class NameForm extends React.Component {
constructor(props) {
super(props);
this.state = {value: ''};
this.handleChange = this.handleChange.bind(this);
}
handleChange(event) {
this.setState({value: event.target.value});
}
render() {
return (
<form>
<label>
Name:
<input type="text" value={this.state.value} onChange={this.handleChange} />
</label>
<input type="submit" value="Submit" />
</form>
);
}
}
React Controlled Components
class NameForm extends React.Component {
constructor(props) {
super(props);
this.state = {value: ''};
this.handleChange = this.handleChange.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleChange(event) { this.setState({value: event.target.value}); }
handleSubmit(event) {
alert('A name was submitted: ' + this.state.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}> <label>
Name:
<input type="text" value={this.state.value} onChange={this.handleChange} /> </label>
<input type="submit" value="Submit" />
</form>
);
}
}
Source: reactjs.org
react value
// it a component
import React from 'react';
class App extends React.Component {
//call function (ECMAScript 5) from tag input:text
handleChange = e => {
//
console.log(`${e.target.value}`)
}
render() {
return (
<div className="App">
<input type="text" name="input" id="" placeholder="" onChange={this.handleChange}/>
</div>
);
}
}
export default App;
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