js数组中存对象,根据对象的属性进行去重

##1数组去重
var yearArray = new Array("a","b","c","d","a","b","a","b","a","b");  
$.unique(yearArray);  
console.log(yearArray);
##2数组过滤元素(删除某个元素)
解释完grep()的用法，现在来举个小例子：
var arr=$.grep([0,1,2,3,4,5,6],function(n,i){
return n>2
});
##3数组中存的是对象进行删除,参考网址:https://bbs.csdn.net/topics/391945624?page=1
var ary=[{id:1,name:"b"},{id:2,name:"b"}];
for (var i = ary.length-1; i>0; i--)
if (ary[i].id==2)
ary.splice(i,1);
##4数组中存的是对象进行去重:返回一个新数组,参考地址:车务dsjcw--meetingManage_form.ftl
// 速度最快， 占空间最多（空间换时间） 
function unique2(array){ 
var n = {}, r = [], len = array.length, val, type; 
for (var i = 0; i < array.length; i++) { 
val = array[i]; 
type = typeof val; 
if (!n[val]) { 
n[val] = [type]; 
r.push(val); 
} else if (n[val].indexOf(type) < 0) { 
n[val].push(type); 
r.push(val); 
} 
} 
return r;