I would like to average several time-series arrays of different length using Javascript in an efficient manner. The reason for having different length is because some data is missing in some of the arrays. Time should be used as the…
I am trying to use a select element to set internal state to either 'ascending' or 'descending'. Once the state is set, I would like to use that state value to conditionally sort A-Z or Z-A with orderBy from the…
let x = { "name": undefined, "value": "tr", "prop1": undefined, "prop2": "test", "prop3": 123 }; I need to find the number of properties that are undefined, so in this case 2. Thank you
I'm using lodash to transform a response from a GraphQL. What I've is the following structure: [[ { nodes: [ {}, {} ] }, { nodes: [ {}, {} ] }, { nodes: [ {}, {}, {} ] }, {…
I want to change priority of a draggedItem with a priority of a targetItem. If they are the same, they should be updated correctly (draggedItem should get priority of targetItem and targetItem priority should be increased by one, because it…
I have function as follows: export const updatePriorities = (data, draggedItem, targetItem) => { const draggedItemPriority = draggedItem?.priority; const targetItemPriority = targetItem?.priority; if (draggedItemPriority === undefined || targetItemPriority === undefined || draggedItemPriority === null || targetItemPriority === null) { return…
Using plain JavaScript or lodash, what's the easiest way to transform an array of objects into a single object, while concatenating any array values? I can achieve it on a single property using _.flatMap(before, "nodes") but not sure how to…
In theory this sounds reasonably easy, but a certain AI bot keeps giving me incorrect info. I have data that looks like this: let newData = { '2020': { Thing1: ['ABC', '123'], Thing2: ['DEF'] }, '2020.5': { Thing1: ['ABC', '123',…
I have 3 objects [ {name: 3, q: 10, b: 1}, {name: 5, q: 6, b: 2}, {name: 5, q: 7, b: 1} ] I need to group them by name: [ {name: 3: items: [{q:10, b: 1}]}, {name: 5:…
I'm trying to display my table head and table body as separate components and dynamically too, with some nested properties (like genre). I use lodash but I get an error with the tBody rendering. I won't mind another means to…