Blob URL

Creates a temporary URL that holds a binary object or string. This URL works only while this Blob URL block's parent page is open.

These properties can take input and give output.

• data (binary or string)
• enabled (boolean)

data is the binary object or string. A string is stored as text/plain; binary data (or a list of byte values) is stored as application/octet-binary. Other kinds of values are ignored.

enabled indicates whether this block is currently active.

• TRUE: This block will create a new URL whenever the data property changes.
• FALSE: This block will not create a new URL. This is the default.

When a new URL is created, the previous URL created by this block is revoked and no longer works.

These properties can give output. They cannot take input.

• url (string)

url is the temporary location where the binary object or string is stored and can be accessed.

These are basic uses of the block.

Dataflow Model	Description
	The Zip Download block creates a binary object. The Blob URL block creates a URL where that object can be accessed.
	Dataflow: The Mouse Event block converts a dropped image to binary as described here. Next, the Blob URL block takes that binary object and creates a URL. Finally, the URL is bound to the URL property of an image component. Result: The user drags an image from their file system and drops it on the shape. Then, the user sees the image on the page.
	The JSON string is bound to the data property, and the url property is bound to an IFrame component. The IFrame displays the JSON string.