Lodash _.tap() Method
Lodash _.tap() method of Sequence in lodash is used to call interceptor. Moreover, the main task of the method is to “tap into” a method chain sequence so that the intermediate results can be modified.
Syntax:
_.tap(value, interceptor);
Parameters:
- value: It is the value to be given to the interceptor.
- interceptor: It is the function to be called.
Return Value:
This method returns the value.
Example 1: In this example, we are printing the array in the console by operating some other function on this with the help of the lodash _.tap() method.
Javascript
// Requiring lodash library const _ = require( 'lodash' ); // Calling tap() method let result = _([5, 6, 7]).tap( function (arr) { // Modifying input array using push // operation arr.push(8); }) .value(); // Displays output console.log(result); |
Output:
[ 5, 6, 7, 8 ]
Example 2: In this example, we are printing the array in the console by operating some other function on this with the help of the lodash _.tap() method.
Javascript
// Requiring lodash library const _ = require( 'lodash' ); // Calling tap() method let result = _([ 'Beginner' , 'for' ]).tap( function (arr) { // Modifying input array using push // operation arr.push( 'Beginner' ); }) .value(); // Displays output console.log(result); |
Output:
[ 'Beginner', 'for', 'Beginner' ]
Example 3: In this example, we are printing the array in the console by operating pop and tail method on this with the help of the lodash _.tap() method.
Javascript
// Requiring lodash library const _ = require( 'lodash' ); // Calling tap() method let result = _([ 'f' , 'g' , 'h' ]).tap( function (arr) { // Modifying input array using pop // operation arr.pop(); }) .tail() // Using tail() method .value(); // Displays output console.log(result); |
Output:
[ 'g' ]
Reference: https://lodash.com/docs/4.17.15#tap
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