Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, collection, strings, objects, numbers etc.
The _.size() method gets the size of collection by returning its length for array such as values or the number of own enumerable string keyed properties for objects.
Syntax:
_.size(collection)
Parameters: This method accepts single parameter as mentioned above and described below:
- collection: This parameter holds the collection to inspect.
Return Value: This method returns the collection size.
Example 1: Here, const _ = require(‘lodash’) is used to import the lodash library in the file.
javascript
// Requiring the lodash library const _ = require("lodash");        // Original array and use _.size() method var gfg = _.size([12, 14, 36, 29, 10]);   // Printing the output console.log(gfg); |
Output:
5
Example 2:
javascript
// Requiring the lodash library const _ = require("lodash");        // Original array and use _.size() method var gfg = _.size({ 'p': 1, 'q': 2, 'r': 5});   // Printing the output console.log(gfg); |
Output:
3
Example 3:
javascript
// Requiring the lodash library const _ = require("lodash");        // Original array and use _.size() method var gfg1 = _.size('neveropen'); var gfg2 = _.size('computer science');   // Printing the output console.log(gfg1, gfg2); |
Output:
13, 16
Note: This code will not work in normal JavaScript because it requires the library lodash to be installed.
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