HTML DOM Input FileUpload Object

Input FileUpload Object

The Input FileUpload object represents an HTML <input> element with type="file".

You can access an <input> element with type="file" by using getElementById():

var x = document.getElementById("myFile");

チップ: You can also access <input type="file"> by searching through the elements collection of a form.

You can create an <input> element with type="file" by using the document.createElement() method:

var x = document.createElement("INPUT");
x.setAttribute("type", "file");

= Property added in HTML5.

Property	説明
accept	Sets or returns the value of the accept attribute of the file upload button
autofocus	Sets or returns whether a file upload button should automatically get focus upon page load
defaultValue	Sets or returns the default value of the file upload button
disabled	Sets or returns whether the file upload button is disabled, or not
files	Returns a FileList object that represents the file or files selected with the file upload button
form	Returns a reference to the form that contains the file upload button
multiple	Sets or returns whether a user is allowed to select more than one file in the file upload field
name	Sets or returns the value of the name attribute of the file upload button
required	Sets or returns whether a file in the file upload field must be selected before submitting a form
type	Returns which type of form element the file upload button is
value	Returns the path or the name of the selected file

The Input FileUpload object also supports the standard properties and events.

HTML tutorial: HTML Forms