JSFiddle - React, Tailwind, and code Playground

HTML

<form name="Form1">
<input type="text" name="name">
<input type="text" name="email">
<input type="text" name="code">
<input type="button" onclick="Validate();" value="Submit">
</form>

function check(){
if(document.forms.form1.name.value.length<=0){
alert('Please enter a name');
return false;
}else if(document.forms.form1.email.value.length<=0){
alert('Please enter your email ID');
return false;

}else if(document.forms.form1.code.value.length<=0){
alert('Please enter the code');
return false;
}


}

JavaScript

$("#preview").click(function() {
    $("#submitMe").removeAttr("disabled");
    $("#previewInput1").html($("#input1").val());
    $("#previewInput2").html($("#input2").val());
    $("#previewTextarea").html($("#txt").val());
    return false;
});