groupDepart(arr){
var map = {},
dest = [];
for(var i = 0; i < arr.length; i++){
var ai = arr[i];
if(!map[ai.departCode]){
dest.push({
departCode: ai.departCode,
dname: ai.dname,
data: [ai]
});
map[ai.departCode] = ai;
}else{
for(var j = 0; j < dest.length; j++){
var dj = dest[j];
if(dj.departCode == ai.departCode){
dj.data.push(ai);
break;
}
}
}
}
console.log(dest,'.....')
},
经常遇到的一个写法
