lodash

问题 I failed to render jxs using map of lodash. I have this in my render method return ( <div> {map(groupedByMonths, (obj, index) => <div className="panel"> <div className="panel-heading"> {obj} </div> <div>{obj.price}</div> </div>)} </div> ) But I got error of Objects are not valid as a React child The groupedByMonths structure look like this { "April": [ { "price": 0, }, { "price": 12 }, { "price": 200 } ] } 回答1: Don't know how to do this with lodash map , i can suggest this: {Object.keys

问题 I'm using chrome to debug react native. When I choose "Pause On Caught Exceptions" under "source" debugging tab, the following exception always occur: TypeError: freeProcess.binding is not a function The file in which the exception occurs: http://localhost:8081/< Project_folder >/node_modules/react-proxy/node_modules/lodash/_nodeUtil.js The exception is in line 18: return freeProcess && freeProcess.binding('util'); Full code on that .js page: var freeGlobal = require('./_freeGlobal'); /**

问题 I'm trying to search for away to Combine arrays together and returns an object using lodash ex: var names = ['Franko','Dalia','Peter','Max'] var products = ['Mobile','Tv','Camera'] var result = [{ 'name':'Franko' 'product':'Mobile' },{ 'name':'Dalia' 'product':'Tv' },{ 'name':'Peter' 'product':'Camera' },{ 'name':'Max' 'product':'' }] 回答1: Almost like the duplicate suggested by Mike C, but with slightly different details, use zipWith: var names = ['Franko','Dalia','Peter','Max']; var products

问题 A common, and very readable, pattern found in Lodash is "chaining". With chaining, the result of the previous function call is passed in as the first argument of the next. Such as this example from Lodash docs: var users = [ { 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 } ]; // A sequence with chaining. _(users) .head() .pick('user') .value(); head and pick can both be used outside of a chain as well. Going through the source, there is nothing obviously special about the actual

问题 Can I use an async function as a callback? Something like this: await sequelize.transaction(async function (t1) { _.each(data, async function (value) { await DoWork(value); }); }); //Only after every "DoWork" is done? doMoreWork(); As far as I understand there is no guarantee that the function invoking the callback will wait until the promise is solved before continuing. Right? The only way to be sure what will happen is to read the source code of the function the callback is passed to(e.g.

问题 I have an array with objects I want to search through. The searchable array looks like this: [ { value: 0, label: 'john' }, { value: 1, label: 'johnny' }, { value: 2, label: 'peter' }, { value: 3, label: 'peterson' } ] I search through this using the Lodash filter method: search = (text) => { let results = _.filter( this.props.options, { label: text } ); } This only shows the result that exactly matches the search query ( text parameter). I need to make this work with partial matches. So if I

问题 i have an array of products that each product has a category object. I need to organize by category and include the category object. GroupBy function include only one parameter. the array of products const data = [ {id: 1, 'name': 'produto1', category: {id: 1, name: 'shirts', description: 'super roupa'}}, {id: 2, 'name': 'produto2', category: {id: 1, name: 'shirts', description: 'super roupa'}}, {id: 3, 'name': 'produto3', category: {id: 2, name: 'jackets', description: 'super jackets'}}, {id

问题 Following on from Lodash groupBy with moment that groups an array by dates such as today, this week, month etc by using a fat arrow function and moment I am now trying to enable if then else (or ternary) that only enables this if the sort parameter (passed in from state) is actually a date. This is what I have at the moment... let groupby = datum => { if (this.state.sortGroup ='updatedAt') { return determineGroup(moment(groupProp(datum))); } else { this.state.sortGroup } } //console log point

问题 Let say I have json like this (use JSON.stringify) { name: 'Bill', lastname: 'Smith'} And I want the value wrapped with curly braces like this { name: { value: 'Bill' }, lastname: { value: 'Smith'} } So any idea to do like this using javascript or lodash? 回答1: I'd use Object.entries on the input, map to a nested object, then call Object.fromEntries to transform it back again: const input = { name: 'Bill', lastname: 'Smith'}; const newObj = Object.fromEntries( Object.entries(input).map( ([key,

问题 How to enumerate complex javascript object to get property paths to plain values? In example if object is: let complex = { person: {name: 'mat', age: 31}, car: { model: 'Volsan', engine: 'large', doors:[ { side:'right front', color: 'blue' }, { side:'left rear', color: 'red' } ] } }; and outcome would be like: complex.person.name complex.person.age complex.car.model complex.car.engine complex.car.doors[0].side complex.car.doors[0].color complex.car.doors[1].side complex.car.doors[1].color so