lodash

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? This approach lets you efficiently search for an intersection in an arbitrary number of arrays. function hasIntersection() { var collections = _.rest(arguments); return _.some(_.first(arguments), function(item) { return

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. There is no straight forward way to achieve this, however you can use this below function to remove a key from JSON. function filterObject(obj,

I have following object array: var arr = [ { id : "a1", guid : "sdfsfd", ... value : "abc", status: false }, { id : "a2", guid : "sdfsfd", ... value : "def", status: true }, ... ] I have this object: var obj = { id : "a1", guid : "sdfsfd", ... value : "xyz", status : true } I need to replace the object in the array with this object where the "id" is same. So the resulting array will be: var arr = [ { id : "a1", guid : "sdfsfd", ... value : "xyz", status: true }, { id : "a2", guid : "sdfsfd", ... value : "def", status: true }, ... ] Additionally I need to add this object to the array if an

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){ super(props); this.state = {foo: ''} } handleInputChange = _.debounce((e) => { e.persist(); let value

Using flat JavaScript or by making use of lodash, what is the simplest way (hoping lodash has a function) which I compare the following arrays and return the value which has changed: Before [ {id: 0, name: 'Bob', age: 27}, {id: 1, name: 'Frank', age: 32}, {id: 2, name: 'Joe', age: 38} ] After [ {id: 0, name: 'Bob', age: 27}, {id: 1, name: 'Frank', age: 33}, {id: 2, name: 'Joe', age: 38} ] So between before and after, Frank is now age 33, so how can I simply return: {id: 1, name: 'Frank', age: 33} Or a more desired result: {id: 1, age: 33} EDIT: As I got such a nice variation of answers to my

How do you convert a dotted keys into a javascript object and retain it's value? So I got this kind of response from an API and I need to parse it by key: value. { "property": "personal_info.address.city", "description": "Missing field" }, { "property": "personal_info.address.country", "description": "Missing field" }, So I achieved this: { 'personal_info.address.city': 'Missing field', 'personal_info.address.country': 'Missing field' } // by using this code (lodash) _.mapValues(_.keyBy(obj, 'property'), function(o) { return o.description; }) however, i need it to be like this: { personal_info

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 must start with either "/", "./", or "../". Note: I do not wish to use any bundling tool. If you don't