QJSValueIterator

The QJSValueIterator class provides a Java-style iterator for QJSValue . More

Inheritance diagram of PySide2.QtQml.QJSValueIterator

Synopsis

Functions

Detailed Description

The QJSValueIterator constructor takes a QJSValue as argument. After construction, the iterator is located at the very beginning of the sequence of properties. Here’s how to iterate over all the properties of a QJSValue :

QJSValue object;
...
QJSValueIterator it(object);
while (it.hasNext()) {
    it.next();
    qDebug() << it.name() << ": " << it.value().toString();
}

The next() advances the iterator. The name() and value() functions return the name and value of the last item that was jumped over.

Note that QJSValueIterator only iterates over the QJSValue ‘s own properties; i.e. it does not follow the prototype chain. You can use a loop like this to follow the prototype chain:

QJSValue obj = ...; // the object to iterate over
while (obj.isObject()) {
    QJSValueIterator it(obj);
    while (it.hasNext()) {
        it.next();
        qDebug() << it.name();
    }
    obj = obj.prototype();
}

See also

property()

class PySide2.QtQml.QJSValueIterator(value)
Parameters

valuePySide2.QtQml.QJSValue

PySide2.QtQml.QJSValueIterator.hasNext()
Return type

bool

Returns true if there is at least one item ahead of the iterator (i.e. the iterator is not at the back of the property sequence); otherwise returns false.

See also

next()

PySide2.QtQml.QJSValueIterator.name()
Return type

str

Returns the name of the last property that was jumped over using next() .

See also

value()

PySide2.QtQml.QJSValueIterator.next()
Return type

bool

Advances the iterator by one position. Returns true if there was at least one item ahead of the iterator (i.e. the iterator was not already at the back of the property sequence); otherwise returns false.

See also

hasNext() name()

PySide2.QtQml.QJSValueIterator.operator=(value)
Parameters

valuePySide2.QtQml.QJSValue

Return type

PySide2.QtQml.QJSValueIterator

PySide2.QtQml.QJSValueIterator.value()
Return type

PySide2.QtQml.QJSValue

Returns the value of the last property that was jumped over using next() .

See also

name()