Javascript DOM HTML Label form Property get

Introduction

Return the id of the form containing the <label> element: 

var x = document.getElementById("myLabel").form.id;

Click the "Test" button to return the id of the form the label belongs to.

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<!DOCTYPE html>
<html>
<body>

<form id="myForm">
  <label id="myLabel" for="male">Male</label>
  <input type="radio" name="sex" id="male" value="male"><br>
</form>//from  w  w w  .jav  a 2s.  c o m
<p id="demo"></p>

<button onclick="myFunction()">Test</button>

<script>
function myFunction()
{
    var x = document.getElementById("myLabel").form.id;
    document.getElementById("demo").innerHTML=x;
}
</script>

</body>
</html>

The form property returns a reference to the form containing the label.

This property returns a form object on success.

This property is read only.

If the label is not in a form, null is returned




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