Spread operator "..." works for arrays, but not objects.

Tannz0rz

A very simple JS example:

        // Works
        var arr_1 = [ 3 ];
        var arr_2 = [ 1, 2, ...arr_1 ];

        // Does not work            
        var obj_1 = { "C": 3 };            
        var obj_2 = { "A": 1, "B": 2, ...obj_1 };

This is built with Qt 5.12.4 (MSVC 2017 x64). Can anyone else confirm this?

JKSH

Hi @Tannz0rz,

QJSEngine supports ECMAScript 7 (2016): https://doc.qt.io/qt-5/qtqml-javascript-hostenvironment.html

The spread syntax was added to objects in ECMAScript 9 (2018) and is also considered "experimental": https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax