const groupBy = (array, f) => {
let groups = {};
array.forEach(function (o) {
var group = JSON.stringify(f(o));
groups[group] = groups[group] || [];
groups[group].push(o);
});
return Object.keys(groups).map(function (group) {
return groups[group];
});
};
const arrayGroupBy = (list, groupId) => {
let sorted = groupBy(list, function (item) {
return [item[groupId]];
});
return sorted;
};
arrayGroupBy(数组, '字段名称');
