how to create list of Years in the dropdown using react js JSX

Question

I want to create a list of the Years in react JSX

I have a code for the Jquery, please have a look below.

var minOffset = 0, maxOffset = 60; // Change to whatever you want
var thisYear = (new Date()).getFullYear();
var select = $('<select>');

for (var i = minOffset; i <= maxOffset; i++) {
    var year = thisYear - i;
    $('<option>', {value: year, text: year}).appendTo(select);
}

select.appendTo('body');

http://jsfiddle.net/DhpBg/739/

Answer 1

First, generate all the required years in an array

const year = (new Date()).getFullYear();
const years = Array.from(new Array(20),( val, index) => index + year);

Once you have the years, you can iterate over the array and list it in select control.

Consider following code snippet

constructor(props){
  super(props);
  const year = (new Date()).getFullYear();
  this.years = Array.from(new Array(20),(val, index) => index + year);
}

render() {
  return(
    ...
    <select>
     {
       this.years.map((year, index) => {
         return <option key={`year${index}`} value={year}>{year}</option>
       })
     }
    </select>
    ...
  );
}

Hope this will help!

Answer 2

This might help. Make sure you properly set the correct state and handle your updates in your onHandleChange.

const minOffset = 0;
const maxOffset = 60; 

class DatePicker extends React.Component {
  constructor() {
    super();
    
    const thisYear = (new Date()).getFullYear();
    
    this.state = {
      thisYear: thisYear,
      selectedYear: thisYear
    }
  }
  
  onHandleChange = (evt) => {
    // Handle Change Here
    // alert(evt.target.value);
    this.setState({ selectedYear: evt.target.value });
  };

  render() {
    const { thisYear, selectedYear } = this.state;
    const options = [];
    
    for (let i = minOffset; i <= maxOffset; i++) {
      const year = thisYear - i;
      options.push(<option value={year}>{year}</option>);
    }
    return (
      <div>
        <select value={this.selectedYear} onChange={this.onHandleChange}> 
          {options}
        </select>
      </div>
    );
  }
}

/*
 * Render the above component into the div#app
 */
ReactDOM.render(<DatePicker />, document.getElementById('app'));

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="app"></app>