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Properties: constructor global ignoreCase lastIndex multiline source Methods: compile exec test toString. Report Error. Add a comment. Active Oldest Votes. Let's start : The input load file to memory when selecting uploading file or not? No it just save file path. I use process monitor then select file nearly Mb, both chrome and firefox not eat more memory, or reading disk; I can even delete this file before clicking submit button. How enctype of form effect to the input?
What does server side do when receiving the data? How do CakePHP do with uploaded file? You can listen on onchange event of the file input; Through it DOM, we can access FileList then from its we can access in File; With FileReader support in almost current browsers we can read it as data url May see detail here: how to preview a image before and after upload? Sign up or log in Sign up using Google. Sign up using Facebook. A name for the control. This name will be sent by the browser to the processing agent, and will identyfy the file and its relevant information, server-side.
Currently, the value isindex , formerly used in a special way by some browsers and included in the HTML standard, isn't permitted in this attribute. File to upload:. A boolean value indicating wether this control can be left empty or not. If this attribute has the value "required" or the empty string "" , or if it's just present, the user will have to select a file for this the control in order to be able to submit the form.
Browser support for the attribute required is incomplete. Authors may have to rely on scripts to provide this functionality cross-browser. Profile picture:. A value indicating the type of the field that this element represents. There are twenty two possible values case-insensitive :. For information about global attributes refer to this list of global attributes in HTML 5. For information about global events refer to this list of global events in HTML 5. Note: You can find this example on GitHub too — see the source code , and also see it running live.
Regardless of the user's device or operating system, the file input provides a button that opens up a file picker dialog that allows the user to choose a file. Including the multiple attribute, as shown above, specifies that multiple files can be chosen at once. The user can choose multiple files from the file picker in any way that their chosen platform allows e. The FileList behaves like an array, so you can check its length property to get the number of selected files.
A number specifying the date and time at which the file was last modified, in milliseconds since the UNIX epoch January 1, at midnight. A Date object representing the date and time at which the file was last modified. This is deprecated and should not be used. Use lastModified instead. A string specifying the file's path relative to the base directory selected in a directory picker that is, a file picker in which the webkitdirectory attribute is set.
This is non-standard and should be used with caution. Often you won't want the user to be able to pick any arbitrary type of file; instead, you often want them to select files of a specific type or types.
For example, if your file input lets users upload a profile picture, you probably want them to select web-compatible image formats, such as JPEG or PNG.
Acceptable file types can be specified with the accept attribute, which takes a comma-separated list of allowed file extensions or MIME types.
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