<!doctype html>
<html lang ="en">
<head>
<title>document.forms example</title>
</head>
<body>
<form id="dave">
<input type="button" onclick="alert(document.forms[0].id); " value="dave's form"/>
</form>
<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 documents.forms['login']
loginform.elements.email.placeholder ='test@example.com';
loginform.elements.password.placeholder ='password';
</script>
</body>
</html>
The Document property forms returns a collection (an HTMLCollection) listing all the <form> elements contained by the document.
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You can use [html][/html], [css][/css], [php][/php] and more to embed the code. Urls are automatically hyperlinked. Line breaks and paragraphs are automatically generated.