Here is a test/demo page which demonstrates the code working:ĭue to the level of browser support for the new Async Clipboard API, you will likely want to fall back to the document.execCommand('copy') method to get good browser coverage. To develop create your own web page, serve that page over an HTTPS connection to test and develop against. Note that since this post was originally written deprecation of permissions in cross-origin IFRAMEs and other IFRAME "sandboxing" prevents the embedded demos "Run code snippet" buttons and "codepen.io example" from working in some browsers (including Chrome and Microsoft Edge). a user click) to allow ( document.execCommand('copy')) to access the clipboard see below for more detail. Generally, the page is required to be active (Async Clipboard API) or requires user interaction (e.g. Not covered here as it doesn't directly answer the question.ĭon't expect clipboard related commands to work whilst you are testing code in the console.Allows you to modify what appears on the clipboard from any copy event, can include other formats of data other than plain text.See Clipboard API documentation on Overriding the copy event.In other words if I have a file named 'Myfile.txt' and I overwrite it using copy with a file named 'MyFile.txt' it will overwrite it but the filename will remain 'Myfile.txt'. During testing ~April 2015 only Internet Explorer was noted as displaying permissions prompts whilst writing to the clipboard. On Windows (not sure about Linux) copy will overwrite an existing file but will not change the case of the existing filename.Text is read from the DOM and placed on the clipboard.stops JavaScript in the page until complete including displaying and user interacting with any security prompts. Most browsers support this as of ~April 2015 (see Browser Support below).In Chrome 66 pages inactive tabs can write to the clipboard without a permissions prompt.ĭocument.execCommand('copy') ( deprecated) □.Only supported on pages served over HTTPS.Text can be copied to the clipboard directly from a variable.Access is asynchronous and uses JavaScript Promises, can be written so security user prompts (if displayed) don't interrupt the JavaScript in the page.Text-focused portion available in Chrome 66 (March 2018).There are three primary browser APIs for copying to the clipboard:Īsync Clipboard API
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