Underscore.js is a JavaScript library that provides a lot of useful functions that helps in the programming in a big way like the map, filter, invoke etc even without using any built-in objects.
The _.result() function is an inbuilt function in Underscore.js library of JavaScript. Here, if the stated value of the named property is a function then you should call it with the object as a context else return it. Moreover, if a default value is stated and the property parameter is not given or is not defined then the default value will be returned.
Note: If the stated defaultValue is a function then its result will be returned as output.
Syntax:
_.result(object, property, [defaultValue])
Parameters: It accepts three parameters which are specified below:
- object: It is the stated object.
- property: It is the property stated.
- [defaultValue]: It is the stated default value.
Return Value: This method returns the value of the named property.
Example 1:
Javascript
<!DOCTYPE html> <html> <head> <script src= </script> </head> <body> <script> var obj = { CSportal: 'neveropen', gfg: function () { return 'Geeks!'; } }; // Calling result method with its parameters console.log(_.result(obj, 'CSportal')); </script> </body> </html> |
Output:
neveropen
Example 2:
Javascript
<!DOCTYPE html> <html> <head> <script src= </script> </head> <body> <script> var obj = [1, 2, 4, 5]; // Calling result method // with its parameters console.log(_.result(obj, 9, 7)); console.log(_.result(obj, 5)); </script> </body> </html> |
Output:
7 undefined
Reference: https://underscorejs.org/#result
