lodash

问题 I have an array of objects that can be of any length and any depth. I need to be able to find an object by its id and then modify that object within the array. Is there an efficient way to do this with either lodash or pure js? I thought I could create an array of indexes that led to the object but constructing the expression to access the object with these indexes seems overly complex / unnecessary edit1; thanks for all yours replies I will try and be more specific. i am currently finding

问题 I am new to lodash, and created a function that removes the key from the object where a value is null or blank. But when i am passing my object which contains some part as array it removes array and converts it into an object. Below is my code which i tried: _.mixin({ 'removeFalsies': this.removeFalsies }); _.mixin({ removeEmptyObjects: this.removeEmptyObjects }); removeFalsies (obj) { return _.transform(obj, function (o, v, k) { if (v && typeof v === 'object') { if (v !== '') { o[k] = _

问题 I have an array such as: var db = [{ "words": ["word1a", "word1b", "word1c"], "answer": "answer1" }, { "words": ["word2a", "words2b"], "answer": "answer2" }] I'm using lodash on node.js to check values in an array. I want to search words and return an response. For example, if I search "word1a", the response is "answer1" I try: var e = _.find(db, function(o){ o.words === "say" }); console.log(e); But I cant find a result; Obviously, I get undefined because I'm comparing an exactly value. How

问题 I am looking for sorting the list of objects based on key Here is my object var Categories = { "social": [ { "id": "social_001", "lastModified": "2 Day ago" } ], "communication": [ { "id": "communication_001", "lastModified": "4 Day ago" }, { "id": "communication_002", "lastModified": "1 Day ago" } ], "storage": [ { "id": "storage_001", "lastModified": "3 Day ago" } ] } so in output sorted object will sort as start with communication , social , storage suggest me some help. 回答1: Here is a

问题 I'm trying to use lodash in my angular2 project. $ npm install --save lodash $ npm install --save @types/lodash I got this warning messages from installing lodash And this one for the types I ignored those warning messages and continue. Now in my component, I added this line.. import * as _ from 'lodash'; when the app starts to compile I get this errors in my console: ERROR in [default] /path/to/project/node_modules/@types/lodash/index.d.ts:244:12 Duplicate identifier '_'. ERROR in [default]

问题 I want to know if two or more arrays have common items, but I don't care what those items are. I know lodash has an _.intersection method, but I don't need it to run through every single item of each array. Instead, I need something like a _.hasIntersection method that will stop looking in an array once it finds the first common occurrence. Does lodash have something like that? 回答1: This approach lets you efficiently search for an intersection in an arbitrary number of arrays. function

问题 I'm trying to debounce textarea value with react/redux and show the debounced value in div#preview but i'm getting synthetic event warning after first function call. I have reducer for handling textarea value state which is working as intended, but for simplicity i've wrote local state in this snippet. If there is a better method besides debounce to avoid react rerendering after each keypress I would love to know. Thanks in advance. class TextArea extends React.Component { constructor(props){

问题 Let's say I have nested objects, like: var obj = { "items":[ { "name":"Item 1", "value": "500", "options": [{...},{...}] }, { "name":"Item 2", "value": "300", "options": [{...},{...}] } ], "name": "Category", "options": [{...},{...}] }; I want to remove the options property from any level deep from all the objects. Objects can be nested within objects, and arrays as well. We're currently using Lodash in the project, but I'm curious about any solutions. 回答1: There is no straight forward way to

问题 I'm trying to use lodash in my web application. I have installed lodash using npm in my local project. I plan on using the ES6 modules in my code. Here is my main.js file: import * as _ from "lodash"; _.each([1, 2, 3, 4], (i) => { console.log('index each ' + i); }); And I have included it in index.html as: <script src="js/main.js", type="module"></script> But I get the following error in the browser console. Uncaught TypeError: Failed to resolve module specifier "lodash". Relative references

问题 I have object with several properties, says it's something like this { a: "", b: undefined } in jsx is there any one line solution I can check whether that object's property is not empty or has value or not? If array there's a isEmpty method. I tried this const somethingKeyIsnotEmpty = Object.keys((props.something, key, val) => { return val[key] !== '' || val[key] !== undefined }) 回答1: In lodash, you can use _.some _.some(props.something, _.isEmpty) 回答2: You can use lodash _.every and check