Lodash _.pickBy() method is used to return a copy of the object that is composed of the object properties predicate returns truthy for.
Syntax:
_.pickBy( object, [predicate] )
Parameters:
- object(Object) parameter holds the source object.
- predicate(function) parameter holds the function that is invoked for every property. It is an optional value.
Return Value:
This method returns the new object.
Example 1: In this example, we are using the _pickBy() method in which we are passing the _.isLength() method.
Javascript
// Requiring the lodash library const _ = require("lodash");Â
// The source objectlet obj = {    Name: "neveropen",    password: 123456,    username: "your_neveropen"}Â
// Using the _.pickBy() method console.log(_.pickBy(obj, _.isLength)); |
Output:
{'password': 123456}
Example 2: In this example, we are using the _pickBy() method in which we are passing the _.isNumber() method which returns true if the value is a number.
Javascript
// Requiring the lodash library const _ = require("lodash");Â
// The source objectlet obj = { 'x': 1, 'y': '2', 'z': 3 };Â
// Using the _.pickBy() method console.log(_.pickBy(obj, _.isNumber)); |
Output:
{'x': 1, 'z': 3}
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