Form length attribute

HTML DOM Form Object

Definition and Usage

length The property returns the number of elements in the form.

Instance

Example 1

Return the number of elements in the form:

var x = document.getElementById("myForm").length;

Try It Yourself

Example 2

Return the value of each element in the form:

var x = document.getElementById("myForm");
var txt = "";
var i;
for (i = 0; i < x.length; i++) {
  txt = txt + x.elements[i].value + "<br>";
}
document.getElementById("demo").innerHTML = txt;

Try It Yourself

Syntax

formObject.length

Technical Details

Return Value: Numbers, indicating the number of elements in the form.

Browser Support

The numbers in the table indicate the first browser version that fully supports this property.

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
Support Support Support Support Support

HTML DOM Form Object