传入数组进行分类

 写的不好,个人记录方便时使用,仅供参考. 有不足请多多指正刚刚学前端

/**
 * @param {*} ArrayList 需要分类的数组
 * @param {*} objectKeyName 需要分类的对象键名称
 */
function classification(ArrayList, objectKeyName) {
	let newArrayPersevationKeyName = [];
	if (ArrayList === null || ArrayList.lenght === 0) return;
	return ArrayList.reduce((oldData, newData, index) => {

		if (newData.constructor === Array) {
			newArrayPersevationKeyName.push(...newData);
			if (ArrayList.length - 1 === index) {
				console.log(index)
				oldData.push(...classification(newArrayPersevationKeyName, objectKeyName));
				return oldData;
			}
			return oldData;

		} else if (newData.constructor === Object) {
			if (newArrayPersevationKeyName.length === 0) {
				oldData.push([newData]);
				newArrayPersevationKeyName.push(newData[objectKeyName]);
				return oldData;
			}
			if (newArrayPersevationKeyName.indexOf(newData[objectKeyName]) != -1) {
				oldData[newArrayPersevationKeyName.indexOf(newData[objectKeyName])].push(newData);
			} else {
				oldData.push([newData]);
				newArrayPersevationKeyName.push(newData[objectKeyName]);

			}
			return oldData;
		}

	}, [])
}