js分组

var arr = [ ???{"id":"1001","name":"值1","value":"111"}, ???{"id":"1001","name":"值1","value":"11111"}, ???{"id":"1002","name":"值2","value":"25462"}, ???{"id":"1002","name":"值2","value":"23131"}, ???{"id":"1002","name":"值2","value":"2315432"}, ???{"id":"1003","name":"值3","value":"333333"}];var map = {}, ???dest = [];for(var i = 0; i < arr.length; i++){ ???var ai = arr[i]; ???if(!map[ai.id]){ ???????dest.push({ ???????????id: ai.id, ???????????name: ai.name, ???????????data: [ai] ???????}); ???????map[ai.id] = ai; ???}else{ ???????for(var j = 0; j < dest.length; j++){ ???????????var dj = dest[j]; ???????????if(dj.id == ai.id){ ???????????????dj.data.push(ai); ???????????????break; ???????????} ???????} ???}}console.log(dest);