JSFiddle - React, Tailwind, and code Playground

by akash singh

HTML

<form id="form" action="start.php" method="post" onsubmit="return  verification();" enctype="multipart/form-data">
Person 1: <input type="text" id="person1" name="person1" /> <br/>
Person 2: <input type="text" id="person2" name="person2" /> <br />
<input type="submit" value="Submit" name="Submit" />
</form>

JavaScript

function verification() {
        var1= document.getElementById("person1").value;
        var2= document.getElementById("person2").value;
        if((var1 == "") && (var2 == ""))
        {
            alert("Fill at least one field");
           
        }
        else
        {   if((var1 != "") && (var2 != "")){
             alert("both filled");
        }else{
        alert("only one field filled");
        }
        }
    
    return false;
    

}