lodash

问题 I've got the following array: data = [{ name: "Robert", urls: [{ provider: "facebook", url: "http://twitter.com/rob" }] }, { name: "Robert", urls: [{ provider: "youtube", url: "http://youtube.com/robs" }] }, { name: "Linda is a perfect duplicate", urls: [{ provider: "youtube", url: "http://youtube.com/lindaTube" }] }, { name: "Linda is a perfect duplicate", urls: [{ provider: "youtube", url: "http://youtube.com/lindaTube" }] }] I need to build a new array based on data that look like this one

问题 I am trying to group a bunch of dates by today, this week, this month and then previous months. However before I even get to this point I am struggling to get even a basic grouping by month. const data = [{ campaign: "Charles", company_ID: "1", coreURL: "http://www.test77.com", createdAt: "2017-11-06T20:45:56.931Z", owner: "K7xTxu7PRDCuhFZRC", updatedAt: "2017-09-06T20:45:56.931Z", _id: "6gsb42PSSJt7PgsDG" }, { campaign: "Charles", company_ID: "1", coreURL: "http://www.test66,com", createdAt:

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . I have two arrays apple = [1,5,10,15,20] , bottle = [1,5,10,15,20,25] using lodash or any javascript function, I want an array c with unique elements c= [25] . To be more precise, I want the list of all the elements when 'apple' array is compared with 'bottle' array, to display

问题 There is such an array of data. How do I implement filtering by parentTd (one of the array "parentIds"), using lodash method _.filter? "terms": [{ "id": 13, "name": 'illustrator', "parentIds": [2, 4], "isCompanyArea": false }, { "id": 14, "name": 'figma', "parentIds": [2, 3], "isCompanyArea": true }, { "id": 15, "name": 'sas', "parentIds": [3 ,4, 2], "isCompanyArea": false }, { "id": 16, "name": 'jmp', "parentIds": [3], "isCompanyArea": false }, { "id": 17, "name": 'docker', "parentIds": [4,

问题 How could I split an array by value like this: [0, 1, 2, 0, 0, 0, 1, 0] => [[0, 1, 2], [0], [0], [0, 1], [0]] ? I'm using lodash documentary, but kinda out of ideas for now. Is there any way to do this with _.groupBy ? Thanks for your answers. 回答1: Use native JavaScrip Array#reduce method. var data = [0, 1, 2, 0, 0, 0, 1, 0], last; var res = data.reduce(function(arr, v) { // check the difference between last value and current // value is 1 if (v - last == 1) // if 1 then push the value into

问题 I have some objects in the shape of below. [{ product: 'ABC', productId: 'AB123', batch: 'BA1', price: '12' }, { product: 'ABC', productId: 'AB123', batch: 'BA2', price: '15' }, { product: 'XYZ', productId: 'AB124', batch: 'XY1', price: '124' }] I want to merge objects into one single object in the array if key pair ( product , and productId ) are mathced, in the below format. [{ product: 'ABC', productId: 'AB123', batch: ['BA1', 'BA2'], price: ['12', '15'] }, { product: 'XYZ', productId:

问题 How do I add a key/value pair to a nested object without overwriting the top level keys in my Redux reducer? notes state before: notes: { -KQpqwDTyLOzd-8UXi-z: { created: 1473035305252, text: 'stuff', } -KQqe4xiwV4-5WIs2Gpg: { created: 1473017044898, text: 'more stuff', } } notes state after: notes: { 0: { created: 1473035305252, text: 'stuff', new: 'new value', } 1: { created: 1473017044898, text: 'more stuff', } } here is my reducer that is producing the above results: import _ from 'lodash

问题 The below code takes a all the methods in object lib and promisify's them. Then I can use the callback style function as a promise, which works. Then I use _.partial provide the function and arguments, this returns a function. When I call that function it throws an error instead of wrapping the function. I have a whole bunch of tests here that show that this behavior only happens to functions generated with promisifyAll . What's the problem here and how can it be fixed? var Promise = require(

问题 Good morning . I need help on checking if object exists and certain propertie have value of true. Ex: validations={ "DSP_INDICADOR": { "required": true }, "EMPRESA": { "required": true }, ..... "NOME_AVAL": { "required": false, "notEqualToField": "NOME" } } and then check for required:true Thanks in advance 回答1: I guess this would be it. if (validations["EMPRESA"] && validations["EMPRESA"].required) { console.log(true) } else { console.log(false) } 回答2: How about simply using _.get

问题 I have the following array: [ { id: 1 }, { id: 2 }, { id: 3 }, { id: 4 } ] Every 5 seconds my application receives a new array and I need to compare the difference between the next one... So the next array is: [ { conversation_id: 1 }, { conversation_id: 2 }, { conversation_id: 4 } ] Considering that identity is different. How can I compare with the previous and get an array with the excluded item? [ { id: 3 } ] 回答1: Use _.differenceWith() : const prev = [{"id":1},{"id":2},{"id":3},{"id":4}]