The data obtained from mongodb query data command is null

When we use node.js obtain mongodb When the data is inside , Obtained data is empty
as follows ：

home.get("/idioms-find", async(req,res) => {
    

     //  Receive the current page parameters passed by the client 
    let value = req.query.val || 1;

    let idioms = await Idiom.find({
    'word':value }); 
    
    res.send({
    
        rows:idioms,
    }); 
});

When the value I passed from the client is " Look in all directions " When

Back to idioms Empty array , puzzled , Most bloggers say it's because mongodb hold collection The value of a set becomes a complex number , Is, indeed, , However, there is no error in the current data acquisition , In other words, you define the database as idiom, The database will indeed become idioms

But add s, Or the obtained data is empty

Directly in the database , Can find data

So remove the leading and trailing spaces

You can get the data