This code updates the object properties and their values but when I try to return the object, I get [object Object] on my screen. How do I Return the whole object? Answer You have to create a string at some point. JSON.stringify(records) is the closest you will get to printing the object.
Tag: return
How to catch Firebase promise in React?
I have a simple function that checks if the user has Premium access or not: I tried to catch this in various ways, but no luck, it always returns an “undefined” object. What is the correct way to get the returned Boolean value? Answer onSnapshot is meant for listening to a collection continuously, getting repeatedly notified as its value changes.
Variable of function always returns undefined
The idea: I want to return a variable from a function and then output it using console.log(). The problem: I can’t just use return result because then nothing is returned. I don`t really know how else to return the variable. I have already looked at SO posts like this one, however I probably lack suitable understanding to implement this into
Undefined when i am returning an Object in Javascript
I’m doing a getter in VueX, and when i’m returning an object for another function, i have “undefined”. Basically i have a function like that. When i’m showing obj with console.log(obj), i have an object with elements in here. And basically it’s working. But when i’m doing a return and i’m trying to get the obj in another function I
How to return object from MongoDb database in findOne method
sorry if it’s easy mistake, I’ve not so much experience in JS, I’ve tried a lot of ways and I can’t resolve this problem. I can find and print my object from database, but I can’t return it to my main method. My main method (it’s in another file than methods to database): and (before tries to debug this) my
Memory reference issue for function return (React Javascript)
So I am working in React.js. I need to generate three versions of the same list, but with a different set of markets contained inside of each of the three events. I expect the events to be the same. But when they are linked to the markets, each of the three same events might have a different sub-set of markets
What’s the performance difference between “skip if condition” and “directly return”?
Is there any performance difference between the following 2 functions: Which one has a smaller execution time? Answer I don’t think there is a performance difference, but the second function is better for readability, because you don’t have to indent. Also you can use !a in the if statement in the second function for better readability.
Recursive function returns undefined
I have a function which calculates taxes. I can’t see why it doesn’t stop the recursion. Answer In this arm of your function: you are not returning a value from the function or setting returnTax. When you don’t return anything, the return value is undefined. Perhaps, you want this:
How to make chainable function in JavaScript?
Lets imagine function like this: Usage of it would be like: I’m looking for a way to create function that’s chainable with other functions. Imagine usage: How would I do this? Answer Sure, the trick is to return the object once you’re done modifying it: http://jsfiddle.net/Xeon06/vyFek/ To make the method available on String, I’m modifying it’s prototype. Be careful not
Why does a return in `finally` override `try`?
How does a return statement inside a try/catch block work? I’m expecting the output of this function to be true, but instead it is false! Answer Finally always executes. That’s what it’s for, which means its return value gets used in your case. You’ll want to change your code so it’s more like this: Generally speaking you never want to