SVGGraphicsElement: copy event - Web APIs 编辑

The copy event fires on SVGGraphicsElements when the user initiates a copy action through the browser's user interface.

The event's default action is to copy the selection (if any) to the clipboard.

A handler for this event can modify the clipboard contents by calling setData(format, data) on the event's  ClipboardEvent.clipboardData property, and cancelling the event's default action using event.preventDefault().

However, the handler cannot read the clipboard data.

It's possible to construct and dispatch a synthetic copy event, but this will not affect the system clipboard.

Example

HTML

<?xml version="1.0" encoding="UTF-8"?>
<svg viewBox="0 0 100 30" width="600" height="320" xmlns="http://www.w3.org/2000/svg">
    <text x="5" y="10" id="text-to-copy">Copy this text</text>
    <foreignObject x="5" y="20" width="90" height="20">
        <input xmlns="http://www.w3.org/1999/xhtml" placeholder="Paste it here"/>
    </foreignObject>
</svg>

CSS

input {
  font-size: 10px;
  width: 100%;
  height: 90%;
  box-sizing: border-box;
  border: 1px solid black;
}

JavaScript

document.getElementsByTagName("text")[0].addEventListener("copy", evt => {
  evt.clipboardData.setData('text/plain', document.getSelection().toString().toUpperCase());
  evt.preventDefault();
});

Result

Specifications

See also

• Related events: cut, paste
• This event on HTML Element targets: copy
• This event on Document targets: copy
• This event on Window targets: copy