lodash

问题 I have 2 nested objects which are different and I need to know if they have difference in one of their nested properties. var a = {}; var b = {}; a.prop1 = 2; a.prop2 = { prop3: 2 }; b.prop1 = 2; b.prop2 = { prop3: 3 }; The object could be much more complex with more nested properties. But this one is a good example. I have the option to use recursive functions or something with lodash... 回答1: An easy and elegant solution is to use _.isEqual, which performs a deep comparison: var a = {}; var

问题 Before I start posting the code I will explain what I want to happen and what is happening. I have been working with this all day and finally got something to work. The problem is that I have no clue why it works and if it's the best way to do it. What I want to happen is when a User clicks delete on a comment I want the comment to be delete from the current post on the back end and from the state on the front end. UPDATE: I did not really add enough to show what I was talking about. When a

问题 please bare with my English and writing question, i have a array of json data which i am trying to make it in a nested tree structure but not getting success , hope someone can help me out. My Example Data: [ { "id" : 1, "name" : "Abc", "path" : "/", "type" : "folder" }, { "id" : 2, "name" : "Xyz", "path" : "/Abc/", "type" : "folder" }, { "id" : 3, "name" : "Pqr", "path" : "/Abc/Xyz/", "type" : "folder" }, { "id" : 4, "name" : "Zap", "path" : "/Abc/Xyz/Pqr/", "type" : "folder" },{ "id" : 5,

问题 I'm trying to use lodash's find method to determine an index based on one attribute. In my case this is pet name. After that I need to change the adopted value to true using setState. The problem is however; I do not understand how to combine setState and _.find() As of right now I have this written. My main issue is figuring out how to finish this. adopt(petName) { this.setState(() => { let pet = _.find(this.state.pets, ['name', petName]); return { adopted: true }; }); } This does nothing at

问题 i am doing one of my front end project and i have a situation where i have to merge/add objects present in the array based on some conditions. Conditions would be Only those Objects having same label should be merged. For objects which has same label, if object 'a' has properties which are present in b object as well, the value has to be added, else simply copy the property. So my input would be [ { label: 'label-1', published: 1, draft: 2, id: 'some1' }, { label: 'label-1', published: 2,

问题 I am having a hard time trying to get the lodash modules imported. I've setup my project using npm+gulp, and keep hitting the same wall. I've tried the regular lodash, but also lodash-es. The lodash npm package: (has an index.js file in the package root folder) import * as _ from 'lodash'; Results in: error TS2307: Cannot find module 'lodash'. The lodash-es npm package: (has a defaut export in lodash.js i the package root folder) import * as _ from 'lodash-es/lodash'; Results in: error TS2307

问题 I am having a hard time trying to get the lodash modules imported. I've setup my project using npm+gulp, and keep hitting the same wall. I've tried the regular lodash, but also lodash-es. The lodash npm package: (has an index.js file in the package root folder) import * as _ from 'lodash'; Results in: error TS2307: Cannot find module 'lodash'. The lodash-es npm package: (has a defaut export in lodash.js i the package root folder) import * as _ from 'lodash-es/lodash'; Results in: error TS2307

问题 I am trying to use underscoreJs to manipulate a JavaScript object and having problems doing so. Here is my example var data = { "label": "SomeName", "parent": [{ "id": "parentId", "resources": [{ "name": "ID1NAME", "calls": [ "user_get", "user2_post", "user3_delete" ] }, { "name": "ID2", "calls": [ "employee1_get", "employee2_delete", "employee3_update" ] }] }] }; var res = _(data).chain(). pluck('parent'). flatten(). findWhere(function(item){ item === "user_get" }). value(); console.log(res)

问题 The _.uniq() in lodash removes duplicates from an array: var tst = [ { "topicId":1,"subTopicId":1,"topicName":"a","subTopicName1":"w" }, { "topicId":2,"subTopicId":2,"topicName":"b","subTopicName2":"x" }, { "topicId":3,"subTopicId":3,"topicName":"c","subTopicName3":"y" }, { "topicId":1,"subTopicId":4,"topicName":"c","subTopicName4":"z" }] var t = _.uniq(tst, 'topicName') This returns: [ {"topicId":1,"subTopicId":1,"topicName":"a","subTopicName1":"w" }, { topicId: 2, subTopicId: 2, topicName: