The _.allKeys() function is used to return all keys of the object and inherited properties.
Syntax:
_.allKeys( object )
Parameters: This function accept oa single parameter as mentioned above and described below:
- object: It contains the object element that holds the elements of key and value pair.
Return Value: It returns all key of the object and inherited properties.
Below examples illustrate the _.allKeys() function in Underscore.js:
Example 1:
<!DOCTYPE html> <html> Â Â <head> Â Â Â Â <script type="text/javascript" src= Â Â Â Â </script> </head> Â Â <body> Â Â Â Â <script type="text/javascript"> Â Â Â Â Â Â Â Â Â Â var obj = { Â Â Â Â Â Â Â Â Â Â Â Â Company: "neveropen", Â Â Â Â Â Â Â Â Â Â Â Â Address: "Noida", Â Â Â Â Â Â Â Â Â Â Â Â Contact: "+91 9876543210", Â Â Â Â Â Â Â Â Â Â Â Â Email: "abc@gfg.com" Â Â Â Â Â Â Â Â } Â Â Â Â Â Â Â Â console.log(_.allKeys(obj)); Â Â Â Â </script> </body> Â Â </html> |
Output:
Example 2:
<!DOCTYPE html> <html> Â Â <head> Â Â Â Â <script type="text/javascript" src= Â Â Â Â </script> </head> Â Â <body> Â Â Â Â <script type="text/javascript"> Â Â Â Â Â Â Â Â Â Â function Geeks(name) { Â Â Â Â Â Â Â Â Â Â Â Â return this.name = name; Â Â Â Â Â Â Â Â } Â Â Â Â Â Â Â Â Â Â Geeks.prototype.neveropen = true; Â Â Â Â Â Â Â Â Â Â console.log(_.allKeys(new Geeks("Company"))); Â Â Â Â </script> </body> Â Â </html> |
Output:
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