Table of Contents
How to handle file inputs with JavaScript?
We can get files with the file input by setting the type of the input to file. Also, we can use the drop listener to get the files that are dropped into an element. The files object is an array-like object that has the file data, including name, size, and type.
How to set data in a datatransfer?
DataTransfer.setData() Set the data for a given type. If data for the type does not exist, it is added at the end, such that the last item in the types list will be the new format. If data for the type already exists, the existing data is replaced in the same position.
What happens if the type of data transfer is not specified?
If the type is empty or not specified, the data associated with all types is removed. If data for the specified type does not exist, or the data transfer contains no data, this method will have no effect. Retrieves the data for a given type, or an empty string if data for that type does not exist or the data transfer contains no data.
How is the datatransfer used in drag and drop?
The DataTransfer object is used to hold the data that is being dragged during a drag and drop operation. It may hold one or more data items, each of one or more data types.
We can get files with the file input by setting the type of the input to file. Also, we can use the drop listener to get the files that are dropped into an element. The files object is an array-like object that has the file data, including name, size, and type.
How to create and return a datatransfer object?
Creates and returns a new DataTransfer object. Gets the type of drag-and-drop operation currently selected or sets the operation to a new type. The value must be none , copy , link or move. Provides all of the types of operations that are possible. Must be one of none, copy, copyLink, copyMove, link, linkMove, move, all or uninitialized.
What are the types of operations in datatransfer?
Provides all of the types of operations that are possible. Must be one of none, copy, copyLink, copyMove, link, linkMove, move, all or uninitialized. Contains a list of all the local files available on the data transfer. If the drag operation doesn’t involve dragging files, this property is an empty list.
If the type is empty or not specified, the data associated with all types is removed. If data for the specified type does not exist, or the data transfer contains no data, this method will have no effect. Retrieves the data for a given type, or an empty string if data for that type does not exist or the data transfer contains no data.