HTMLFormElement.enctype

The HTMLFormElement.enctype property is the MIME type of content that is used to submit the form to the server. Possible values are:

application/x-www-form-urlencoded: The initial default type.
multipart/form-data: The type that allows file <input> element(s) to upload file data.
text/plain: A type introduced in HTML5.

This value can be overridden by a formenctype attribute on a <button> or <input> element.

Value

A string.

form.enctype = 'application/x-www-form-urlencoded';

Specification
HTML Standard # dom-fs-enctype

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`enctype`	1	12	1	6	≤12.1	3	1	18	4	≤12.1	1	1.0

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https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/enctype