The forms
read-only property of the Document
interface returns an HTMLCollection
listing all the <form>
elements contained in the document.
Note: Similarly, you can access a list of a form's component user input elements using the HTMLFormElement.elements
property.
collection = document.forms;
An HTMLCollection
object listing all of the document's forms. Each item in the collection is a HTMLFormElement
representing a single <form>
element.
If the document has no forms, the returned collection is empty, with a length of zero.
<!DOCTYPE html> <html lang="en"> <head> <title>document.forms example</title> </head> <body> <form id="robby"> <input type="button" onclick="alert(document.forms[0].id);" value="robby's form" /> </form> <form id="dave"> <input type="button" onclick="alert(document.forms[1].id);" value="dave's form" /> </form> <form id="paul"> <input type="button" onclick="alert(document.forms[2].id);" value="paul's form" /> </form> </body> </html>
var selectForm = document.forms[index]; var selectFormElement = document.forms[index].elements[index];
<!DOCTYPE html> <html lang="en"> <head> <title>document.forms example</title> </head> <body> <form name="login"> <input name="email" type="email"> <input name="password" type="password"> <button type="submit">Log in</button> </form> <script> var loginForm = document.forms.login; // Or document.forms['login'] loginForm.elements.email.placeholder = '[email protected]'; loginForm.elements.password.placeholder = 'password'; </script> </body> </html>
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'Document.forms' in that specification. | Living Standard | |
Document Object Model (DOM) Level 2 HTML Specification The definition of 'Document.forms' in that specification. | Obsolete | Initial definition. |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | Yes | ? | Yes | ? | ? | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | Yes | Yes | ? | Yes | ? | ? | ? |
<form>
and the HTMLFormElement
interface
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/document/forms