Lodash _.isUndefined() method is used to find whether the given value is undefined or not. It returns True if the given value is undefined. Otherwise, it returns false.
Syntax:
_.isUndefined(value);Parameters:
- value: This parameter holds the value to check.
Return Value:
This method returns true if the value is undefined, else false.
Example 1: In this example, we are printing the boolean result of whether the given value is undefined or not by the use of the _.isUndefined() method.
// The lodash library is included
const _ = require("lodash");
// Use of _.isUndefined() method
console.log(_.isUndefined(null));
console.log(_.isUndefined(void 0));
console.log(_.isUndefined('gfg'));
Output:
false
true
false
Example 2: In this example, we are printing the boolean result of whether the given value is undefined or not by the use of the _.isUndefined() method.
// The lodash library is included
const _ = require("lodash");
// Use of _.isUndefined() method
console.log(_.isUndefined(10));
console.log(_.isUndefined(undefined));
Output:
false
true
