Add an attribute data-selected to each element and set the value(s) to the value of the option you wish to have selected. The slice() method returns a new Blob object with bytes ranging from the optional start parameter up to but not including the optional end parameter, and with a type attribute that is the value of the optional contentType parameter. It should be a word or short phrase that demonstrates the expected type of data, rather than an explanatory message. How can a web application detect a paste event and retrieve the data to be pasted? Then compare all nodes POST PASTE event. However, it is quite common to set these with CSS to display as an inline list.[8]. How can I horizontally center an element? Note: The