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Lodash _.result() Method

  • Last Updated : 07 Sep, 2020

Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.

The _.result() method is used to return the resolved values. If the resolved value is a function then it invoked with the this binding of its parent object. It is almost the same as _.get() function.

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Syntax:

_.result( object, path, defaultValue )

Parameters: This method accepts three parameters as mentioned above and described below:



  • object: It is the object that is queried.
  • paths: It is a string or array of the paths of the property to resolve.
  • defaultValue: It is the value returned for undefined resolved values. It is an optional value.

Return Value: This method returns the resolved value.

Example 1:

Javascript




// Requiring the lodash library  
const _ = require("lodash");  
  
// The source object
var obj = 
  { 'x': [{ 'y': {
    'z1': 6, 'z2': _.constant(9) } }]
  };
  
// Use of _.result method 
console.log(_.result(obj, 'x[0].y.z1'));
console.log(_.result(obj, 'x[0].y.z2'));

Output:

6
9

Example 2:  

Javascript




// Requiring the lodash library  
const _ = require("lodash");  
  
// The source object
var obj =
  { 'x': [{ 'y': {
    'z1': 3, 'z2': _.constant(4) } }]
  };
  
// Use of _.result method 
console.log(
  _.result(obj, 'x[0].y.z3',
    'default')
);
console.log(
  _.result(obj, 'x[0].y.z3',
    _.constant('new-default'))
);

Output:

'default'
'new-default'



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