JSFiddle - React, Tailwind, and code Playground

HTML

<form method="post">
    <table>
        <tr>
            <td>
                <select id="StateSelection1" name="StateSelection">
                    <option value="1">state 1</option>
                    <option value="2">state 2</option>
                    <option value="3">state 3</option>
                    <option value="4">state 4</option>
                    <option value="5">state 5</option>
                </select>
            </td><td>
                <input type="submit" class="bouton" name="test"/>   
            </td><td>  
                <div id="1" class="1">1</div>
                <div id="2" class="1">2</div>
                <div id="3" class="1">3</div>
                <div id="4" class="1">4</div>
                <div id="5" class="1">5</div>
            </td>
        </tr>   

        <tr>
            <td>        
                <select id="StateSelection2" name="StateSelection">
                    <option value="1">state 1</option>
                    <option value="2">state 2</option>
                    <option value="3">state 3</option>
                    <option value="4">state 4</option>
                    <option value="5">state 5</option>
                </select>
           </td><td>
                <input type="submit" class="bouton" name="test"/>
           </td><td>
    
                <div id="1" class="2">1</div>
                <div id="2" class="2">2</div>
                <div id="3" class="2">3</div>
                <div id="4" class="2">4</div>
                <div id="5" class="2">5</div>
           </td>
      </tr>
</table>
</form>

JavaScript

$(function(){
    $(".2").hide();
    $(".3").hide();
    $(".4").hide();
    $(".5").hide();
});

$("form").submit(function() {
    switchDiv1( $("#StateSelection1").find("option:selected").val() );
    switchDiv2( $("#StateSelection2").find("option:selected").val() );
    return false;
});


function switchDiv1(value){
    $("#1").$(".1").hide();
    $("#2").$(".1").hide();
    $("#3").$(".1").hide();
    $("#4").$(".1").hide();
    $("#5").$(".1").hide();
    $("#" + value).$(".1").toggle();
};



function switchDiv2(value){
    $("#1").$(".2").hide();
    $("#2").$(".2").hide();
    $("#3").$(".2").hide();
    $("#4").$(".2").hide();
    $("#5").$(".2").hide();
    $("#" + value).$(".2").toggle();
};