Lodash _.defaultTo() Method
Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.
The _.defaultTo() method is used to check the given value and determine if a default value should be restored in its place. When the value is NaN, null, or undefined, the value given in the defaultValue parameter is returned.
Syntax:
_.defaultTo( value, defaultValue )
Parameters: This method accepts two parameters as mentioned above and described below:
- value: This parameter holds the value to check.
- defaultValue: This parameter holds the default value to be restored.
Return Value: This method returns the resolved value.
Example 1:
Javascript
// Requiring the lodash library const _ = require("lodash"); // Return the resolved value // by _.defaultTo() method console.log(_.defaultTo(5, 15)); // Return the resolved value // by _.defaultTo() method console.log(_.defaultTo(82, 43)); |
Output:
5 82
Example 2:
Javascript
// Requiring the lodash library const _ = require("lodash"); // When the value is NaN, defaultValue // is returned by _.defaultTo() method console.log(_.defaultTo(null, 15)); // When the value is undefined, defaultValue // is returned by _.defaultTo() method console.log(_.defaultTo(undefined, 43)); |
Output:
15 43
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