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console 命令行工具 X clear

                    
>
console
var list = [{
  "players": 1,
  "num": 10000
},
{
  "players": 2,
  "num": 10000
}, {
  "players": 3,
  "num": 10000
}, {
  "players": 4,
  "num": 10000
}, {
  "players": 5,
  "num": 10000
}];

//用于分组
function groupByItem(item) {
	  if (item.players<3){
      return item.players;
    }else {
      return '3 plus';
    }
}



function mapValues(value){
  return {"num":_.sumBy(value, "num")};
} 
 
var output = _(list) 
    .groupBy(groupByItem )
 		.mapValues(mapValues)
		.value();

$("#output").html(JSON.stringify(output));
<div id="output">
</div>

<div id="output1">
</div>

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