HTMLFormElement.length
The HTMLFormElement.length read-only property returns the number of controls in the <form> element.
Syntax
JavaScript
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<var>integer</var> = form.length
Example
JavaScript
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if (document.getElementById("form1").length > 1) { // more than one form control here }
Specifications
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/htmlformelement/length