Form lengthProperty
Form Object
Definition and Usage
The length property returns the number of elements in the form.
Syntax
formObject.length
Browser Support
All major browsers support the length property.
Example
Example
The following example returns the number of elements in the form:
<html>
<body>
<form id="frm1" action="form_action.html">
First name: <input type="text" name="fname" value="Donald"><br>
Last name: <input type="text" name="lname" value="Duck"><br>
<input type="submit" value="Submit">
</form>
<script>
document.write(document.getElementById("frm1").length);
</script>
</body>
</html>
<body>
<form id="frm1" action="form_action.html">
First name: <input type="text" name="fname" value="Donald"><br>
Last name: <input type="text" name="lname" value="Duck"><br>
<input type="submit" value="Submit">
</form>
<script>
document.write(document.getElementById("frm1").length);
</script>
</body>
</html>
The output of the above example is:
3
Try it Yourself »
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Get the value of each element in the form
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