var aa=[
{"time":Date.parse("2017/02/22 16:30"),"val":22},
{"time":Date.parse("2017/02/21 16:30"),"val":11},
{"time":Date.parse("2017/02/23 16:30"),"val":33},
{"time":Date.parse("2017/02/24 16:30"),"val":44}
];
aa.sort(function(a,b){
return a.time > b.time
});
console.log(aa)
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