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I tried to filter file format to accept only .txt in HTML. Here's my HTML code:
<Input
type="file"
accept="text/plain"
/>
In Safari, it works and only .txt files show up, but in Chrome (63.0.3239.84) the file selector also shows .csv files.
Is it possible to exclude .csv files in Chrome?
233
But it is possible to restrict the file types to only images, or certain image file extensions. To achieve this, you need to use the HTML accept attribute. This attribute is only used with <input type="file"> and serves as a filter to select file inputs from the file input dialog box.
The <input type="file"> defines a file-select field and a "Browse" button for file uploads. To define a file-select field that allows multiple files to be selected, add the multiple attribute. Tip: Always add the <label> tag for best accessibility practices!
For this we will use fileValidation() function. We will create fileValidation() function that contains the complete file type validation code. In this function we will use regex to check the type of file by the given pattern.
Complete HTML/CSS Course 2022 To allow multiple file uploads in HTML forms, use the multiple attributes. The multiple attributes work with email and file input types. For limiting maximum items on multiple inputs, use JavaScript. Through this, limit the number of files to be uploaded.
The accept attribute specifies the types of files that the form input will accept.
<input accept="file_extension|audio/*|video/*|image/*|media_type">
Tip: To specify more than one value, separate the values with a comma (e.g. .
Simply include the filetype you'd like to allow in the accept attribute, as follows:
<input accept=".txt"
Note: Because this file-restriction is client-side, users are able to remove this attribute and bypass this file-restriction, potentially leading to a vulnerability.
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