Html select files to

HTML5: File Input with Folder Selection

First, we have a look at the required HTML. We are using a normal input field with the type «file». In order to be able to select multiple files at once, we have added the attribute «multiple». Additionally, we have added an onchange event to read and process the folder respectively the files from the selected folder with JavaScript. We will look at the JavaScript code in the next section.

For making a directory input out of the usual file input, additionally, we have specified the attributes webkitdirectory, mozdirectory, msdirectory, odirectory and directory. Actually, specifying only the attribute «directory» should be enough at that point, but because we also want to support some older browsers, we have also added the browser specific attributes with the prefix webkit-, moz-, ms- and o-. If the browser is supporting one of those attributes, instead of the file dialog, now the directory dialog of the system is displayed.

How to access the selected Folders via JavaScript

Last, I also want to show you, how to work with the selected folder and how you are able to access the files of the folder which the user has selected.

For this, we are using the following JavaScript, which will be automatically executed when changing the folder selection, because we have assigned the function to the onchange event of the input field.

We get all files located in the selected folder in the array e.target.files.

In the code above, we are just looping through this array (the number of files is e.target.files.length) in order to show some information about the files such as name, size and type using an alert.

Browser Support

This input type is supported by the browsers Google Chrome (from version 30), Microsoft Edge (from version 14), Mozilla Firefox (from version 50) and Opera (from version 17). In contrast, the selection of folders is not supported by the Internet Explorer and many mobile browsers. This is also due to the fact that many mobile systems do not allow folders to be selected in their system at all.

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Uploading files made easy with the .selectFile command

Today we’re excited to announce a built-in way for you to select files in an HTML5 input element and simulate dragging files into the browser with the introduction of the .selectFile() command, new in Cypress 9.3.0.

Selecting files in an HTML5 input element

With the new .selectFile() command, you can easily select a fixture file in a form element:

cy.get('input[type=file]').selectFile('file.json')

Or multiple fixture files, as long as the file input has the multiple property:

cy.get('input[type=file]').selectFile(['file.json', 'file2.json']) 

You can also select a file created dynamically inside of a test, using the new Cypress.Buffer utility, also added in 9.3.0:

cy.get('input[type=file]').selectFile(< contents: Cypress.Buffer.from('file contents'), fileName: 'file.txt', lastModified: Date.now(), >)

Dragging files into the browser

The new .selectFile() command also allows you to simulate dragging and dropping a file over an element, using the drag-drop action:

cy.get('input[type=file]').selectFile('file.json', < action: 'drag-drop' >) 

And you can even drop a file over the document:

cy.document().selectFile('file.json', < action: 'drag-drop' >) 

Manipulating binary data with Buffer

Cypress now exposes an API for manipulating binary data, similar to the nodejs Buffer class, as Cypress.Buffer .

Not only are instances of Cypress.Buffer accepted by .selectFile() to specify files inline, but the cy.readFile() and cy.fixture() commands yield instances of Cypress.Buffer when the encoding is set to null :

cy.readFile('images/logo.png', null).then((file) => < // file will be read as a buffer // and should look something like this: // Buffer([0, 0, . ]) expect(Cypress.Buffer.isBuffer(file)).to.be.true >) cy.fixture('images/logo.png', null).then((logo) => < // logo will be read as a buffer // and should look something like this: // Buffer([0, 0, . ]) expect(Cypress.Buffer.isBuffer(logo)).to.be.true >)

Migrating from the cypress-file-upload plugin

The .selectFile() command replaces the cypress-file-upload community plugin by Paul Auramenka, and moving forward we recommend that you update your tests to use the new command.

In order to streamline this process, a comprehensive Migration guide has been written which explains the exact steps you need to take to update existing tests to use .selectFile() .

Resources

We’d like to hear from you!

The Cypress team has been working hard to deliver this improved experience. We’re excited to bring new APIs like .selectFile() and Cypress.Buffer to our users, and as always, we’re eager to hear your feedback.

You can submit an issue on Github or chat with us on our Discord. Thanks for your support, and happy testing!

Источник

Uploading files made easy with the .selectFile command

Today we’re excited to announce a built-in way for you to select files in an HTML5 input element and simulate dragging files into the browser with the introduction of the .selectFile() command, new in Cypress 9.3.0.

Selecting files in an HTML5 input element

With the new .selectFile() command, you can easily select a fixture file in a form element:

cy.get('input[type=file]').selectFile('file.json')

Or multiple fixture files, as long as the file input has the multiple property:

cy.get('input[type=file]').selectFile(['file.json', 'file2.json']) 

You can also select a file created dynamically inside of a test, using the new Cypress.Buffer utility, also added in 9.3.0:

cy.get('input[type=file]').selectFile(< contents: Cypress.Buffer.from('file contents'), fileName: 'file.txt', lastModified: Date.now(), >)

Dragging files into the browser

The new .selectFile() command also allows you to simulate dragging and dropping a file over an element, using the drag-drop action:

cy.get('input[type=file]').selectFile('file.json', < action: 'drag-drop' >) 

And you can even drop a file over the document:

cy.document().selectFile('file.json', < action: 'drag-drop' >) 

Manipulating binary data with Buffer

Cypress now exposes an API for manipulating binary data, similar to the nodejs Buffer class, as Cypress.Buffer .

Not only are instances of Cypress.Buffer accepted by .selectFile() to specify files inline, but the cy.readFile() and cy.fixture() commands yield instances of Cypress.Buffer when the encoding is set to null :

cy.readFile('images/logo.png', null).then((file) => < // file will be read as a buffer // and should look something like this: // Buffer([0, 0, . ]) expect(Cypress.Buffer.isBuffer(file)).to.be.true >) cy.fixture('images/logo.png', null).then((logo) => < // logo will be read as a buffer // and should look something like this: // Buffer([0, 0, . ]) expect(Cypress.Buffer.isBuffer(logo)).to.be.true >)

Migrating from the cypress-file-upload plugin

The .selectFile() command replaces the cypress-file-upload community plugin by Paul Auramenka, and moving forward we recommend that you update your tests to use the new command.

In order to streamline this process, a comprehensive Migration guide has been written which explains the exact steps you need to take to update existing tests to use .selectFile() .

Resources

We’d like to hear from you!

The Cypress team has been working hard to deliver this improved experience. We’re excited to bring new APIs like .selectFile() and Cypress.Buffer to our users, and as always, we’re eager to hear your feedback.

You can submit an issue on Github or chat with us on our Discord. Thanks for your support, and happy testing!

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