return _.transform(obj, function(result, value, key) { // transform to a new object var currentKey = keysMap[key] || key; // if the key is in keysMap use the replacement, if not use the original key result[currentKey] = _.isObject(value) ? The _.keyBy() method creates an object that composed of keys generated from the results of running an each element of collection through iteratee. The block of code inside the loop will be executed once for each property. Iterates over elements of collection and invokes iteratee for each element. The lodash keys method works by just simply passing an object as the first argument, and an array of public key names is returned by the method. This will render us My name is Leanne Graham. @knobo I thought the same, but _.reduce already has that functionality. Now lets loop through this object using different methods available. let us see through the below examples. 3) “ Oval 6 ” is the name of the certain shape. Both will give the same result. Note: The syntaxes are same for lodash forIn and forOwn method but forIn iterates over own and inherited enumerable properties of an object while forOwn iterates over own enumerable string keyed properties. Check below for an example. So in the above examples, I have shown you all the possible ways available to loop through arrays and objects. This is similar to for loop just the syntax is different. The forEach method executes a provided function once for each array element. See Peter Michaux's article for more details. Spread the love Related Posts Learning JavaScript by Implementing Lodash Methods — ObjectsLodash is a very useful utility library that lets us work with objects and arrays… Learning JavaScript by Implementing Lodash Methods — Objects and FunctionsLodash is a very useful utility library that lets us work with objects and arrays… Learning JavaScript by Implementing Lodash … Now using the map function I am iterating the data inside the render method. TypeScript queries related to “lodash create object with keys from array” lodash get first element of array; lodash filter acceess variabkes; handle duplicate in lodash; find an object in an array by one of its properties lodash; lodash push to multidimensional object; get the object based on value in loadhash; lodash greater than The Object.entries() method returns an array of a given object’s own enumerable string-keyed property [key, value] pairs, in the same order as that provided by a for…in loop. The _.sortBy () method creates an array of elements which is sorted in ascending order by the results of running each element in a collection through each iteratee. The lodash keys method might not be the best example of the worth of lodash these days, but there is something to say about browser support with the Object.keys method. transform object to array with lodash, You can do var arr = _.values(obj);. The iteratee is invoked with three arguments:(value, index|key, collection). Iterates over own enumerable string keyed properties of an object and invokes iteratee for each property. Arrays are used to store multiple data into a single variable and objects are a collection of properties which is an association between a key and value. The native Object.keys method works in the same manner as well but it might not always be there when it comes to older browsers. This method differs from _.bind by allowing bound functions to reference methods that may be redefined or don't yet exist. Now I’ll show you how to iterate that array of data to our React project using the various approaches. The lodash keys method in lodash can be used to get an array of public key names of an object. I need to compare this two arrays and their id's are same.I need to change the colorCode value depends upon the value. [[key1, value1], [key2, value2]] or two arrays, one of keys and one of corresponding values. lodash union arrays without repeating. It will continue to run as long as the condition is true. Provide either a single two dimensional array, i.e. Lodash helps in working with arrays, collection, strings, objects, numbers etc. Looking at the stats for my website when it comes to browser vender’s and versions and comparing that to the specs that these methods where introduces I can not say there is much of a concern these days. This will create new object and won't change original object. There is also the native Object.keys method as well that has been introduced in recent years. So of course the same thing can be done with the _.map method in lodash, and in more or less the same way. Lodash is a JavaScript library that works on the top of underscore.js. while loop is executed while a specified condition is true. The _.groupBy method creates an object composed of keys generated from the results of running each element of collection through the iteratee function. lodash get key from array of objects. Lodash helps in working with arrays, collection, strings, objects, numbers etc. you cant replace string with object. See Peter Michaux's article for more details. The _.keyBy() method creates an object that composed of keys generated from the results of running an each element of collection through iteratee. To get your desired output, this will do the trick: var file = "a|b|c|d, a|b|c|d, a|b|c|d, a|b|c|d, a|b|c|d"; var array = file.split(", ") // Break up the original string on `", "` .map(function(element, index){ var temp = element.split('|'); return [temp[0], temp[1], index + 1]; }); console.log(array); alert(JSON.stringify(array)); The split … To explain different ways to iterate array we will first set up a simple React app that will fetch data using Axios from our API. The for loop is executed as long as a condition is true. So we are logging out the response data we are getting from the API inside the getData function. 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