javascript-lodashHow can I check if a variable is null or undefined using Lodash in JavaScript?

To check if a variable is null or undefined using Lodash in JavaScript, you can use the _.isNil() method. This method returns true if the given value is null or undefined.

Example code

const _ = require('lodash');

let a = null;
let b = undefined;
let c = 0;

console.log(_.isNil(a)); // true
console.log(_.isNil(b)); // true
console.log(_.isNil(c)); // false

Output example

true
true
false

The .isNil() method takes in one argument, the value to be tested. In the example above, the values of a and b are null and undefined respectively. The .isNil() method returns true for both of these values since they are both null or undefined. The value of c is 0, so the _.isNil() method returns false.

Helpful links

• Lodash Documentation - isNil

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