var a = [
  {name: "张含韵", "email": "[email protected]"},
  {name: "李宇春",   "email": "[email protected]"},
  {name: "刘雯",  "email": "[email protected]"}
];
var userEmail = a.map(function(item){ return item.email });
console.log(userEmail);
//["[email protected]", "[email protected]", "[email protected]"]



var b = ["mingxing","geshou","mote"];
var user = a.map(function(item, index){
    return [item.name,b[index]];
})
console.log(user);
/*
[
	["张含韵", "mingxing"]
	["李宇春", "geshou"]
	["刘雯", "mote"]
]
*/