如何在mongoDB javascript中使用$ where

Question

我试图使用close $ where来获取mongoDB文档，但该函数返回我数据库中的第一个文档：

 scanCode: function (scannedcode) {
    try {

        let carItem = Cars.findOne({ $where: function () { return this.codeBarre == 'TOYOTA CAMRY      MC/ 2007CHASSIS/    509740' } });

        console.log(carItem)
        return carItem;
    }
    catch (e) {
        console.log(e.message)
    }

Answer 1

<强> EDITED

scanCode: function (scannedcode) {
try {

    let carItem = Cars.findOne({ $where: "this.codeBarre == 'TOYOTA CAMRY      MC/ 2007CHASSIS/    509740'" });

    console.log(carItem)
    return carItem;
}
catch (e) {
    console.log(e.message)
}