javascript - Filtering an array of objects using underscor functions JS -

i have array of objects looks like:

object{ name: array[3] [0]:   firstname: john  lastname : smtih  classid  : 123 [1]:   firstname: jane  lastname : doe  id       : 321 [2]:  firstname: john  lastname : smtih  classid  : 456 } 

i need filter out array based on uniqueness, no person same firstname , last name , if there 2 of same people, filter same people classid have chosen.

for example, if there 2 john smith in list, , if current classid 123 end result should like

object{ name: array[2] 0:   firstname: john  lastname : smtih  classid  : 123 1:   firstname: jane  lastname : doe  id       : 321  } 

so basically, need check array of objects make sure 2 people dont have same first name , last name , if need filter people classid.

how can filter underscore functions?

thanks

try:

var obj = {     name: [        {            firstname: "john",           lastname : "smtih",           classid  : 123        },        {            firstname: "jane",           lastname : "doe",           classid  : 321        },        {            firstname: "john",           lastname : "smtih",           classid  : 321        }     ]  };    obj.name = _.uniq(obj.name, function(item){    return [item.firstname, item.lastname].join()  });    document.write("<pre>" + json.stringify(obj, null, 4) + "</pre>")

<script src="http://underscorejs.org/underscore.js"></script>

_.uniq simple way so, specifying unique string "firstname, lastname".