Javascript 函数 toLocaleString() Mongo DB 不工作

Question

On mongo shell we are trying to format output values for comma separated . but mongo shell doesnt format the value.

Mongo Function On Shell:

db.system.js.save({_id:"testValue", value: function(){ 
            var number2 = 1234.56789;
            valueFormatted=numer2.toLocaleString(); 
             return valueFormatted }
})

output: 1234.56789 (* no effect of function)

Why is .toLocaleString() not working in mongo shell ? Is any other way of formatting numbers to comma separated within in mongo functions ?

Answer 1

You can use date format command

 db.system.js.save({_id:"testValue",
 date: { $dateToString: { date: new Date(), format: "%Y-%m-%d"} } })