lodash

There are many questions regarding sorting with JavaScript but I didn't find anything that addresses this case so I don't believe this is a duplicate. I'm getting data like this back from an api: //items array var items = [{id:1, name:'bill'}, {id:2, name:'sam'}, {id:3, name: mary}, {id:4, name:'jane'}] //sort order array var order = [{id:1, sortindex:4}, {id:2, sortindex:2}, {id:3, sortindex: 1}, {id:4, sortindex:3}] How can I sort the items array by the sortindex property of the objects in the order array? The objects in the two arrays have the common property id . Is there an elegant lodash

Lets say my object looks like the below. Its a mix of different arrays and parents, no hierarchical order. e.g. "person": { "id": 12345, "name": "John Doe", "emergencyContacts": [ { "name": "Jane Doe", "phone": "888-555-1212", "relationship": "spouse", "moreDetails": { "id": 12345, "phones": {}, "home": "800-123-4567", "mobile": "877-123-1234" } }, { "name": "Justin Doe", "phone": "877-123-1212", "relationship": "parent", "mobile": "877-123-1234" } ], "workContacts": [ { "name": "Jane Doe", "phone": "888-555-1212", "relationship": "spouse", "moreworkDetails": { "id": 12345, "phones": {}, "home

Have an object a1 = [{name:'x',age:21, addr:[{flat:1,add:'xyz'},{flat:2,add:'xsr'}]}, {name:'y',age:22, addr:[{flat:3,add:'xyz1'},{flat:4,add:'xsr1'}]] Desired output: [{name:'x',age:21, addr:{flat:1,add:'xyz'}}, {name:'x',age:21, addr:{flat:2,add:'xsr'}}, {name:'y',age:22, addr:{flat:3,add:'xyz1'}, {name:'y',age:22, addr:{flat:4,add:'xsr1'}] Please suggest! I am trying to accomplish this using lodash/underscore. Map every item in the original array to a new array, with a number of items according to the number of addr fields. Using concat flatten everything to a new array. You can create new

I am working with highChart to create a column chart. Any how I reached to creating following arrayofObj via communicating with database. Now, I require to transform following source array of object to below output. var source = [ {data: 258, name: '2014'} {data: 18, name: '2016'} {data: 516, name: '2014'} {data: 0, name: '2014'} {data: 354, name: '2014'} {data: 18, name: '2016'} ]` Convert this array of object to Output [{ name: '2014', data: [258, 516, 354] }, { name: '2016', data: [18, 0, 18] }] Basically, I want my array to group by name (year) and data should be in array Here is the

一、介绍 官方文档： 中文 - https://www.lodashjs.com/docs/latest 英文- https://lodash.com/docs/4.17.15 1、作用 lodash 是一套 工具库 ，内部封装了很多字符串、数组、对象等常见数据类型的处理函数。 2、组成 lodash ：全部功能 lodash.core ：只有核心的一些函数，详细见这儿 https://github.com/lodash/lod... lodash.fp ：全部功能的函数式实现，文档见 https://github.com/lodash/lodash/wiki/FP-Guide lodash.fp 暂不介绍（待写） 3、竞品比较 Lodash最初是 Underscore 的分支，后来逐渐壮大后自立门户。 Lodash 功能比 Underscore 更丰富，且 Underscore 已有3、4年没有更新，所以推荐使用 Loadash。 二、安装 1、browser <script src="lodash.js"></script> CDN： https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js 2、Node.js npm i lodash // Load the full build. var _ = require(

This question already has an answer here: Partitioning in JavaScript [duplicate] 7 answers Let's say I have an array = [0,1,2,3,4,5,6] and I want to "partition" it into 3 arrays, based on reminder after division by 3. so basically I'd want something like: _.my_partition([0,1,2,3,4,5,6], function(item) {return item % 3;}) // [[0,3,6], [1,4],[2,5]] (I can use lodash, underscore, if ti helps...) There are multiple to do this: I. Normal function function partition(items, n) { var result = _.groupBy(items, function(item, i) { return Math.floor(i % n); }); return _.values(result); } myArray = [1,2,3

I have array of objects called newArray and oldArray. Like this : [{name: 'abc', label: 'abclabel', values: [1,2,3,4,5]}] example : newArray = [ {name: 'abc', label: 'abclabel', values: [1,2,3,4,5]}, {name: 'test', label: 'testlabel', values: [1,2,3,4]} ] oldArray = [ {name: 'oldArray', label: 'oldArrayLabel', values: [1,2,3,4,5]}, {name: 'test', label: 'testlabel', values: [1,2,3,4,5]} ] result will be = [ {name: 'abc', label: 'abclabel', values: [1,2,3,4,5]}, {name: 'test', label: 'testlabel', values: [1,2,3,4]}, {name: 'oldArray', label: 'oldArrayLabel', values: [1,2,3,4,5]} ]; I wanted to