You can simply chain _.omit() with _.isUndefined and _.isNull compositions, and get the result with lazy evaluation. Demo var result = _(my_object).omit(_.isUndefined).omit(_.isNull).value(); Update March 14, 2016: As mentioned by dylants in the comment section, you should use the _.omitBy() function since it uses a predicate instead of a property. You should use this for lodash … Read more
Use _.groupBy and then _.map the resulting object to an array of objects. var newOutput = _(output) .groupBy(‘article’) .map(function(v, k){ return { article: k, titles: _.map(v, ‘title’) } }) .value(); var output = [{“article”:”BlahBlah”,”title”:”Another blah”},{“article”:”BlahBlah”,”title”:”Return of the blah”},{“article”:”BlahBlah2″,”title”:”The blah strikes back”},{“article”:”BlahBlah2″,”title”:”The blahfather”}]; let newOutput = _(output) .groupBy(‘article’) .map(function(v, k){ return { article: k, titles: _.map(v, … Read more
If you’re trying to filter the elements whose course IDs contain in the filter.courses, you may use Array#every and Array#includes to do that: const data = [{“guid”:”j5Dc9Z”,”courses”:[{“id”:3,”name”:”foo”}]},{“guid”:”a5gdfS”,”courses”:[{“id”:1,”name”:”bar”},{“id”:3,”name”:”foo”}]},{“guid”:”jHab6i”,”courses”:[{“id”:7,”name”:”foobar”}]}]; const courses = [1, 6, 3]; const r = data.filter(d => d.courses.every(c => courses.includes(c.id))); console.log(r);
This method orderBy does not change the input array, you have to assign the result to your array : var chars = this.state.characters; chars = _.orderBy(chars, [‘name’],[‘asc’]); // Use Lodash to sort array by ‘name’ this.setState({characters: chars})
I ended up finding it through the IntelliSense on the get() function. So, I’ll post it here for anyone who is looking for similar information. Anyways, the syntax is nearly identical, but slightly different. Instead of using URLSearchParams() the parameters need to be initialized as HttpParams() and the property within the get() function is now … Read more
Use Object.assign: let merged = Object.assign(…arr); // ES6 (2015) syntax var merged = Object.assign.apply(Object, arr); // ES5 syntax Note that Object.assign is not yet implemented in many environment and you might need to polyfill it (either with core-js, another polyfill or using the polyfill on MDN). You mentioned lodash, so it’s worth pointing out it … Read more
You can install lodash.isequal as a single module without installing the whole lodash package like so: npm install –save lodash.isequal When using ECMAScript 5 and CommonJS modules, you then import it like this: var isEqual = require(‘lodash.isequal’); Using ES6 modules, this would be: import isEqual from ‘lodash.isequal’; And you can use it in your code: … Read more
This should do it: function fn(obj, key) { if (_.has(obj, key)) // or just (key in obj) return [obj]; // elegant: return _.flatten(_.map(obj, function(v) { return typeof v == “object” ? fn(v, key) : []; }), true); // or efficient: var res = []; _.forEach(obj, function(v) { if (typeof v == “object” && (v = … Read more
Take a look at lodash’ chunk: https://lodash.com/docs#chunk const data = [“a1”, “a2”, “a3”, “a4”, “a5”, “a6”, “a7”, “a8”, “a9”, “a10”, “a11”, “a12”, “a13”]; const chunks = _.chunk(data, 3); console.log(chunks); // [ // [“a1”, “a2”, “a3”], // [“a4”, “a5”, “a6”], // [“a7”, “a8”, “a9”], // [“a10”, “a11”, “a12”], // [“a13″] // ] <script src=”https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js”></script>
This works for me var newArrayDataOfOjbect = Object.values(data) In additional if you have key – value object try: const objOfObjs = { “one”: {“id”: 3}, “two”: {“id”: 4}, }; const arrayOfObj = Object.entries(objOfObjs).map((e) => ( { [e[0]]: e[1] } )); will return: [ { “one”: { “id”: 3 } }, { “two”: { “id”: 4 … Read more