I have a json array like the picture below 
The position for marker 1 is Null, how can i remove the entire marker 1 object from the array so i only have marker 2,3 and 4 left in the array ? thank you
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4 Answers
jsonArray = jsonArray.filter(item => !item.position.includes(null))
Or
jsonArray = jsonArray.filter(item => item.position[0] !== null && item.position[1] !== null)
6 Comments
Aaron
hi i know this works, but i need it to be filtered based on condition, position = null
Ramin
@Aaron Well position is a list that contains null values, but it's not null itself. So its content needs to be checked.
Aaron
yup so do you have a solution for this, that's my actual problem
AKX
This works for OP's requirement, but will also remove positions on the Null Island, so
jsonArray = jsonArray.filter(item => item.position[0] !== null && item.position[1] !== null) to be precise.Ramin
@Aaron It's not possible to check if a list that has values is null, or even an empty list. I mean you can check but the result is false.
[] === null would always return false. The closest you can get is check whether that list includes null which I've updated my answer to show that too. |
You could do something like:
const result = arrayOfObjects.filter((object) => {
return object.position[0] !== null && object.position[1] !== null);
}
Comments
We can use a library lodash and using filter method, like this:
var items = _.filter(items, function(item){return item.position});
or
var items = _.filter(items, function(item){return item.position !== null && item.position !== ""});
we can filter out objects which do have position null
Comments
Try this code:
const filtered = array.filter(items => items.position[0] != null || items.position[1] != null);
console.log(filtered);
1 Comment
Mukhriddin Shakhriyorov
@Aaron see the answer. I have updated