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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Dynamic Form in HTML</title>
</head>
<body>
<div>
<div id="dynamic">
</div>
<button onclick="addMoreItem();">Add more</button>
</div>
<script>
let user=[];
let dynamic=document.querySelector("#dynamic");
///On Page load call addmore to load first input
addMoreItem();
///As more object is added to array input is added in DOM
function addMoreItem()
{
user.push({firstname:"",lastname:"",email:""});
let str=``;
user.map((data,i)=>{
str+=`
<div>
<input type="text" name="firstname" onchange="handleChange(this,${i});" placeholder="Firstname" value="${data.firstname}" />
<input type="text" name="lastname" onchange="handleChange(this,${i});" placeholder="Lastname" value="${data.lastname}" />
<input type="text" name="email" onchange="handleChange(this,${i});" placeholder="Email" value="${data.email}" />
</div>
`;
});
dynamic.innerHTML=str;
}
///Update Object Array on change event
function handleChange(element,indexA)
{
user[indexA]=Object.assign(user[indexA],{[element.name]:element.value});
console.log(user[indexA]);
console.log(user);
console.log( indexA);
}
///Pass user array as a data if u r submitting from or inserting data by API
</script>
</body>
</html>