The _.keys() function is used to return the list of all keys of the given object.
Syntax:
_.keys( object )
Parameters: This function accept a single parameter as mentioned above and described below:
- object: It contains the object elements.
Return Value: This function returns the list of all key of the given object.
Below examples illustrate the _.Keys() 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(_.keys(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 var key = _.keys({ Â Â Â Â Â Â Â Â Â Â Â Â Name: "Ashok", 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 Mobile: "+91 9876543210", Â Â Â Â Â Â Â Â Â Â Â Â Email: "neveropen@gmail.com" Â Â Â Â Â Â Â Â }); Â Â Â Â Â Â Â Â Â Â console.log(key); Â Â Â Â </ script > </ body > Â Â </ html > |
Output: