Question

how to generate 15 inputs with loop for,
every input with their own “id” and run just once?

<input type="button" onclick="generate()">
<script>
function generate(){
for(var i=0; i < 15; i++) {
}
}

Answer 1

Is that what are you looking for?

for(var i=0 ; i<15;i++)
{
     var input = document.createElement('input');
     input .setAttribute('id',"input"+i);
     document.getElementById("formName").appendChild(input);
}