length restituisce il numero di controlli contenuti dall'elemento FORM.
Sintassi
integer = form.length
Esempio
if (document.getElementById("form1").length > 1) {
// vi è più di un controllo
}
HTMLFormElement.length
Argomenti correlati
HTMLFormElementInheritance:
Events
abortDOMContentLoadedafterprintafterscriptexecutebeforeprintbeforescriptexecutebeforeunloadblurcancelchangeclickcloseconnectcontextmenuerrorfocushashchangeinputinvalidlanguagechangeloadloadendloadstartmessageofflineonlineopenpagehidepageshowpopstateprogressreadystatechangeresetselectshowsortstoragesubmittoggleunloadloadeddataloadedmetadatacanplayplayingplaycanplaythroughseekedseekingstalledsuspendtimeupdatevolumechangewaitingdurationchangeemptiedunhandledrejectionrejectionhandled
Pagine correlate du HTML DOM
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