JSFiddle - React, Tailwind, and code Playground

HTML

<form  action="#"/>
Text <input type="text" name="text" id="text"/><br>
Select Box1 <select id="sel1" onchange="doCheck();" >
    <option value="0">Select</option>
    <option value="1">One</option>
    <option value="2">Two</option>
</select>
Select Box2 <select id="sel2" >
    <option value="0">Select</option>
    <option value="3">Three</option>
    <option value="4">Four</option>
</select>
<br>
</form>

JavaScript

function doCheck()
{
    var changed= false;
    
    if(document.getElementById("text").value=="" && document.getElementById("sel1").value!="0" && document.getElementById("sel2").value=="0")
    {
        changed=true;
    }
       if(changed){
           alert("submitting form : "+changed);
           document.forms[0].submit;
    }
    else{
      
        return false;
    }
   }