Lodash _.omitBy() Method

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Lodash _.omitBy() method is used to return a copy of the object composed of the own and inherited enumerable string keyed properties of the object that the predicate doesn’t return truthy for. It is the opposite of _.pickBy() method.

Syntax:

_.omitBy( object, [predicate] );

Parameters:

object: This parameter holds the source object.
predicate: This 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 omitting those values which do not support the _.isLength() method and returning the rest of the element as an object.

Javascript

// Requiring the lodash library  
const _ = require("lodash");
 
// The source object
let obj = {
    Name: "zambiatek",
    password: 123456,
    username: "your_zambiatek"
}
 
// Using the _.omitBy() method 
console.log(_.omitBy(obj, _.isLength));

Output:

{Name: "zambiatek", username: "your_zambiatek"}

Example 2: In this example, we are omiting those values which do not support the _.isNumber() method and returning the rest of the element as an object.

Javascript

// Requiring the lodash library  
const _ = require("lodash");
 
// The source object
let obj = { 'x': 1, 'y': '2', 'z': 3 };
 
// Using the _.omitBy() method 
console.log(_.omitBy(obj, _.isNumber));

Output:

{'y': '2'}

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