Javascript join two object array

Question

So I have two Object Arrays that I need to make one Object Array.

var insertEpisode = [{
    "show_id":new ObjectId(req.body.show_id),
    "show_b":req.body.show_b,
    "season":new Double(req.body.season),
    "episode_no": new Double(req.body.episode_no),
    "title": req.body.title,
    "summary": podsummary,
    "description": description,
    "explicit":req.body.explicit,
    "enclosureurl":filesToEpisode[0].file.enclosureurl,
    "enclosurebyts": filesToEpisode[0].file.enclosurebyts,
    "duration":new Double(filesToEpisode[0].file.duration),
    }];

and if there is a image to go with the episode I have

if(image){
var image = [{"image":"this "}]
const array3 = insertEpisode.concat(image);
}

however that does not work. instead it added prints out like

[{"show_id":"6274a3a881cf417136a8a4ed","show_b":"insiderelationships","season":1,"episode_no":40,"title":"Test Title","summary":"A week ago a friend invited a couple of other couples over for dinner. Eventually, the food (but not the wine) was cleared off the table for what turned out to be some fierce Scrabbling.","description":"<![CDATA[<p>A week ago a friend invited aco</p>]]>","explicit":"false","enclosureurl":"URL TO mp3.mp3","enclosurebyts":"173080","duration":00:01:00},{"image":"this "}]

Instead it should look like

[{"show_id":"6274a3a881cf417136a8a4ed","show_b":"insiderelationships","season":1,"episode_no":40,"title":"Test Title","summary":"A week ago a friend invited a couple of other couples over for dinner. Eventually, the food (but not the wine) was cleared off the table for what turned out to be some fierce Scrabbling.","description":"<![CDATA[<p>A week ago a friend invited aco</p>]]>","explicit":"false","enclosureurl":"URL TO mp3.mp3","enclosurebyts":"173080","duration":00:01:00, "image":"this "}]

You can see the image part is joined into the first array.

Answer 1

You can use this:

if (image) {
    var image = [{"image":"this "}]
    const merged = {...insertEpisode, ...image};
}