Browsers allow JavaScript to read and write data on clipboard. Generally script should not modify user's clipboard to avoid impacting user expectation, but there are cases where this can indeed bring convenience to users. For example, for some code snippet, user can copy it to clipboard with one click instead of select and copy manually.There are three options for clipboard operation provided in JavaScript/browser:document.execCommand()Asynchronous Clipboard APIcopy and paste eventsThis post will briefly talk about these three options.document.execCommand()This is the early option for operatin...