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import QtQml 2
QtObject {
id: root
property int sum
Component.onCompleted: {
const target = { prop1: 1, prop2: 2, prop3: 3 };
const handler = {
get: function(target, key) {
return target[key]+1;
},
ownKeys: function() {
return ["prop1", "prop3"];
},
getOwnPropertyDescriptor: function(target, key) {
return {
value: this.get(target, key),
enumerable: true,
configurable: true
};
}
};
const proxy = new Proxy(target, handler);
for (var prop in proxy) {
root.sum += proxy[prop] // prop2 gets skipped, the values of 1 and 3 get incremented
}
// so root.sum should be 6 now
}
}
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