GlobalEventHandlers.onselectstart - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The onselectstart property of the GlobalEventHandlers mixin is an EventHandler that processes selectstart events.

The selectstart event fires when the user starts to make a new text selection on a webpage.

Syntax

object.onselectstart = functionRef;

Value

functionRef is a function name or a function expression. The function receives a FocusEvent object as its sole argument.

Examples

document.onselectstart = function() {
  console.log('Selection started!');
};

For a full example, see our Key quote generator demo.

document.onselectstart = () => {
  return false; // cancel selection
};

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• selectstart event
• Related event handler: GlobalEventHandlers.onselectionchange