JSFiddle - React, Tailwind, and code Playground

by Qpirate

HTML

<select name="opts">
<option>1</option>
<option>2</option>
<option>3</option>
</select><select name="opts">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<select name="opts">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<input type="text" id="txtShowValues"/>
<button type="button" id="btnGetValues">GetValues</button>

JavaScript

$('#btnGetValues').click(function(){
    var values = '';
    $('select[name="opts"]').each(function(indx,item){
        values +=$(item).val() +' ';
    });
    values += $('#txtShowValues').val();
    $('#txtShowValues').val(values);
});