Javascript QT中的QML中的JS返回值失败

我正在尝试简单的函数，但函数没有返回任何内容，但是“控制台日志返回良好的值，请问我的代码有什么问题？”

JS:

console.log消息：

qml: heurecellule JS 14010.25
qml: cyclecellule JS 4672
qrc: Cannot read property 'heurecellule' of undefined

你能帮我吗

---

非常感谢

您没有从正确的函数返回值：

function potentieldated(Pimmatriculation, Pdateinstallation) {
    var heurecellule = 0
    var cyclecellule = 0
    var db = dbGetHandle()
    db.transaction(function (tx) {
        var results = // ...
        heurecellule = results.rows.item(0).heurecellule;
        cyclecellule = results.rows.item(0).cyclecellule;
    })
    return {heurecellule:heurecellule,cyclecellule:cyclecellule}
}

---

您没有从正确的函数返回值：

function potentieldated(Pimmatriculation, Pdateinstallation) {
    var heurecellule = 0
    var cyclecellule = 0
    var db = dbGetHandle()
    db.transaction(function (tx) {
        var results = // ...
        heurecellule = results.rows.item(0).heurecellule;
        cyclecellule = results.rows.item(0).cyclecellule;
    })
    return {heurecellule:heurecellule,cyclecellule:cyclecellule}
}

function potentieldated(Pimmatriculation, Pdateinstallation) {
    var heurecellule = 0
    var cyclecellule = 0
    var db = dbGetHandle()
    db.transaction(function (tx) {
        var results = // ...
        heurecellule = results.rows.item(0).heurecellule;
        cyclecellule = results.rows.item(0).cyclecellule;
    })
    return {heurecellule:heurecellule,cyclecellule:cyclecellule}
}