The HTML DOM input FileUpload form property returns the reference of the form which enclose the file upload input button.
Syntax
Following is the syntax −
object.form
Example
Let us see an example of input FileUpload form property −
<!DOCTYPE html>
<html>
<head>
<style>
body{
text-align:center;
background-color:#363946;
color:#fff;
}
form{
margin:2.5rem auto;
}
button{
background-color:#db133a;
border:none;
cursor:pointer;
padding:8px 16px;
color:#fff;
border-radius:5px;
font-size:1.05rem;
}
.show{
font-weight:bold;
font-size:1.4rem;
}
</style>
</head>
<body>
<h1>form Property Demo</h1>
<form id="Form 1">
<fieldset>
<legend>Form 1</legend>
<input type="file" class="fileUploadBtn">
</fieldset>
</form>
<button onclick="identify()">Identify File Upload button Form</button>
<p class="show"></p>
<script>
function identify() {
var formId = document.querySelector(".fileUploadBtn").form.id;
document.querySelector(".show").innerHTML = "Hi! I'm from " + formId;
}
</script>
</body>
</html>Output
This will produce the following output −
Click on “Identify File Upload Button Form” button to identify the form which contain the file upload button.
