lodash

I'm not seeing a way to find objects when my condition would involve a nested array. var modules = [{ name: 'Module1', submodules: [{ name: 'Submodule1', id: 1 }, { name: 'Submodule2', id: 2 } ] }, { name: 'Module2', submodules: [{ name: 'Submodule1', id: 3 }, { name: 'Submodule2', id: 4 } ] } ]; This won't work because submodules is an array, not an object. Is there any shorthand that would make this work? I'm trying to avoid iterating the array manually. _.where(modules, {submodules:{id:3}}); Here's what I came up with: _.find(modules, _.flow( _.property('submodules'), _.partialRight(_.some,

We have an array of objects as such var myArr = [ {name: "john", age:23} {name: "john", age:43} {name: "jim", age:101} {name: "bob", age:67} ]; how do I get the list of objects from myArr where name is john with lodash? Dustin Poissant Lodash has a "map" function that works just like jQuerys: var myArr = [{ name: "john", age:23 }, { name: "john", age:43 }, { name: "jimi", age:10 }, { name: "bobi", age:67 }]; var johns = _.map(myArr, function(o) { if (o.name == "john") return o; }); // Remove undefines from the array johns = _.without(johns, undefined) Use lodash _.filter method: _.filter

This question already has an answer here: How to merge multiple array of object by ID in javascript? 4 answers I have two array with one common field member . how can I merge theme easily? For example: var arr1 = [{ "member" : ObjectId("57989cbe54cf5d2ce83ff9d6"), "bank" : ObjectId("575b052ca6f66a5732749ecc"), "country" : ObjectId("575b0523a6f66a5732749ecb") }, { "member" : ObjectId("57989cbe54cf5d2ce83ff9d8"), "bank" : ObjectId("575b052ca6f66a5732749ecc"), "country" : ObjectId("575b0523a6f66a5732749ecb") }]; var arr2 = [{ "member" : ObjectId("57989cbe54cf5d2ce83ff9d6"), "name" : 'xxxxxx',

The map function in underscore.js, if called with a javascript object, returns an array of values mapped from the object's values. _.map({one: 1, two: 2, three: 3}, function(num, key){ return num * 3; }); => [3, 6, 9] is there a way to make it preserve the keys? ie, I want a function that returns {one: 3, two: 6, three: 9} With Underscore Underscore provides a function _.mapObject to map the values and preserve the keys. _.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; }); // => { one: 3, two: 6, three: 9 } DEMO With Lodash Lodash provides a function _.mapValues to map

I have an array that looks like this: const arr = [ [500, 'Foo'], [600, 'bar'], [700, 'Baz'], ]; I would like to sort this arr alphabetically by the second element in each inner array, ie: [ [600, 'bar'], [700, 'Baz'], [500, 'Foo'], ] Note the case insensitivity. Also, I would love to use lodash helpers if they come in handy here! Here is a concrete, working example, using Array.prototype.sort : const arr = [ [500, 'Foo'], [600, 'bar'], [700, 'Baz'] ]; arr.sort((a,b) => a[1].toUpperCase().localeCompare(b[1].toUpperCase())); console.log(arr); Array.prototype.sort takes a function which will be

I have an object of folders/files that looks like this: { about.html : { path : './about.html' }, about2.html : { path : './about2.html' }, about3.html : { path : './about3.html' }, folderName : { path : './folderName', children : { sub-child.html : { path : 'folderName/sub-child.html' } } } } And it can go 6-7 levels deep of folders having children. I want to find the object where path is equal to a string that I provide. Regardless of how deep it is. I'm using underscore which only does top level: _.findWhere(files,{path:'./about2.html'} How can I do a deep, nested search. Does underscore