Underscore.js | _.defaults() Function
The _.defaults() function returns the object after filling in its undefined properties with the first value present in the following list of default objects.
Syntax:
_.defaults(object, *defaults)
Parameters: This function accepts two parameter as mentioned above and described below:
- object: This parameter holds the value of an object.
- defaults: It is an optional parameter. It contains the [key, value] pair of an object.
Return Value: It returns the object after filling in its undefined properties with the first value present in the following list of default objects.
Example 1:
<!DOCTYPE html><html> <head> <script type="text/javascript" src= </script></head> <body> <script type="text/javascript"> var info = { Company: 'GeeksforGeeks', Address: 'Noida', Contact: '+91 9876543210' }; console.log(_.defaults(info, { Contact: '+91 9898989898', Name: 'Rakesh' }) ); </script></body> </html> |
Output:
Example 2:
<!DOCTYPE html><html> <head> <script type="text/javascript" src= </script></head> <body> <script type="text/javascript"> var info = { Company: 'GeeksforGeeks', Address: 'Noida', Contact: '+91 9876543210' }; var def = { Name: 'Ashok', Age: '34', Company: 'GFG' } console.log(_.defaults(info, def)); </script></body> </html> |
Output:
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