CKEditor Ecosystem Documentation
Search
CKEditor 4 reached its End of Life (EOL) in June 2023. From then on, it will receive no more updates, new features, bug fixes, and security patches. Visit CKEditor 5 Docs for the actively supported CKEditor or check Extended Support Model.
Report an issue
Home/CKEditor 4/API
Class

CKEDITOR.tools.promise

class since 4.12.0
See source

An alias for the Promise object representing an asynchronous operation.

It uses the native Promise browser implementation if it is available. For older browsers with lack of Promise support, the ES6-Promise polyfill is used. See the Promise Browser Compatibility table to learn more.

Refer to MDN Using Promises guide for more details on how to work with promises.

NOTE: catch and finally are reserved keywords in IE<9 browsers. Use bracket notation instead:

promise[ 'catch' ]( function( err ) {
        // ...
} );

promise[ 'finally' ]( function() {
    // ...
} );

Filtering

Methods

  • constructor( resolver ) → promise

    See source

    Creates a new Promise instance.

    new CKEDITOR.tools.promise( function( resolve, reject ) {
    setTimeout( function() {
        var timestamp;
        try {
            timestamp = ( new Date() ).getTime();
        } catch ( e ) {
            reject( e );
        }
        resolve( timestamp );
    }, 5000 );
} );

    Parameters

    resolver : Function

    Returns

    promise