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given an array
var test = [{a:1, b:2, c:3}, {a:4, b:5, c:6}, {a:7, b:8, c:9}]
how do I get an array of new objects like [{b:2, c:3}, {b:5, c:6}, {b:8, c:9}] with lodash?
I have tried _.map(test, _pick(???, ['b', 'c'])}
What should I put in ??? ?
298
pick() method is used to return a copy of the object that is composed of the picked object properties. Syntax: _.pick( object, paths ) Parameters: This method accepts two parameters as mentioned above and described below: object: This parameter holds the source object.
The _. get() function is an inbuilt function in the Underscore. js library of JavaScript which is used to get the value at the path of object. If the resolved value is undefined, the defaultValue is returned in its place. Syntax: _.get(object, path, [defaultValue])
isEqual() Method. The Lodash _. isEqual() Method performs a deep comparison between two values to determine if they are equivalent. This method supports comparing arrays, array buffers, boolean, date objects, maps, numbers, objects, regex, sets, strings, symbols, and typed arrays.
You need to pass function to map and with ES6 you can use arrow function like this.
var test = [{a:1, b:2, c:3}, {a:4, b:5, c:6}, {a:7, b:8, c:9}]
var result = _.map(test, e => _.pick(e, ['b', 'c']))
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