This question already has answers here:
Sorting on Multiple fields mongo DB
(4 answers)
JavaScript set object key by variable
(8 answers)
Closed 8 months ago.
I have the following code :
{ "$sort" : {sortParam : sortOption}},
it should work but it interpretates it as Im trying to set a value to sortParam. Is there a way I can escape this ?
Related
This question already has answers here:
Firestore Update single item in an array field
(2 answers)
how can i update a specific object property within an array in firebase [duplicate]
(2 answers)
Closed 4 months ago.
I want to delete the 0 element of questions array. I've tried this
const documentRef = db.collection(collection).doc(challengeId)
await documentRef.update({
[`stages.0.surveys.0.questions.0`]: firebase.firestore.FieldValue.delete()
})
But it doesn't work. I would appreciate any help. thank you
This question already has answers here:
How to get country name from country code in javascript
(3 answers)
Closed 2 years ago.
Is there a way to get the country code (Alpha-2) from a country name in JavaScript?
You can use this API https://restcountries.eu/
fetch("https://restcountries.eu/rest/v2/name/kenya").then(resp=>{
return resp.json();
}).then(json=>{
console.log(json[0].alpha2Code);
})
This question already has an answer here:
Parsing a JSON object with Special characters in property key
(1 answer)
Closed 3 years ago.
I am pulling in reviews from iOS and the key they have has a : in the middle.
Like so: im:rating: {attributes: {…}}
Therefore, doing something like this is not working. {entry.im:rating.label}
How do I get the label from im:rating?
Simple answer: entry['im:rating'].label
This question already has answers here:
What is JavaScript's highest integer value that a number can go to without losing precision?
(21 answers)
Is there any limitation for integer in javascript? [duplicate]
(2 answers)
Closed 6 years ago.
This is my post id:
var postId = 47213486358396931;
var postComments = "Comment";
adding in object like this
var param = {
"PostId" : postId,
"postComment":postComments
}
If I print the param I get like this. The last digit of number changed to 0. Why am getting like this.
{"PostId" : 47213486358396930, "postComment": "Comment"}
This question already has answers here:
How to push to an array in a particular position?
(4 answers)
How to insert an item into an array at a specific index (JavaScript)
(28 answers)
Closed 7 years ago.
How do I push some data into a certain place in an array?
I am trying the code below:
Keys[1].push({ Keys: "Test" });
But it doesn't seem to work as expected
The method you are looking for is splice
arrayObject.splice(index,0,{Keys:"Test"});
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice