Is there any way to rename js object keys using underscore.js

Question

I need to convert a js object to another object for passing onto a server post where the names of the keys differ for example

var a = {     name : "Foo",     amount: 55,     reported : false,     ...     <snip/>     ...     date : "10/01/2001"     }  

needs to turn into

a = {   id : "Foo",   total : 55,   updated: false,   ...   <snip/>   ...    issued : "10/01/2001"   } 

where I have lookup obj available for mapping all the keys

var serverKeyMap = {     name : "id",     amount : "total",     reported : "updated",      ...     date : "issue"     } 

Is there a function available in underscore.js or jQuery that I can use that does this functionality?

thanks

Answer 1

I know you didn't mention lodash and the answers already solve the problem, but someone else might take advantage of an alternative.

As @CookieMonster mentioned in the comments, you can do this with _.mapKeys:

_.mapKeys(a, function(value, key) {     return serverKeyMap[key]; }); 

And the fiddle: http://jsfiddle.net/cwkwtgr3/