How to loop through an array to generate js code?

Question

Is there a way to loop through an array (or something similar) when generating js code? For example, I have this in mongoose:

    users.updateOne({'_id': req.user._id}
                , {
                ["local.minMinutes"]: req.body.minMinutes

                , ["local.color1U"]: req.body.color1U
                , ["local.color2U"]: req.body.color2U
                , ["local.color3U"]: req.body.color3U
                , ["local.color4U"]: req.body.color4U
                , ["local.color5U"]: req.body.color5U
});

I'd like to be able to say "loop through 1 to 5" instead of having to write each individual number out, but a for() loop inside the mongoose call is giving all sorts of error. I hope this question is specific enough - thank you!

Are you using something like Lodash which has better map-type methods? — tadman
– tadman, Commented Oct 9, 2019 at 16:31
I'm currently using node.js with express if that's any help... — garson
– garson, Commented Oct 9, 2019 at 16:33

Barmar · Accepted Answer · 2019-10-09 16:37:30Z

1

Use a for loop to create the object by copying the properties from req.body.

obj = {
};
for (prop in req.body) {
    obj[`local.${prop}`] = req.body[prop];
}
users.updateOne({'_id': req.user._id}, obj);

answered Oct 9, 2019 at 16:37

Barmar

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