Aimed to mine valuable info from HN stores

TODOs

• download all HN stores into mongodb
• query mongo to get the info I want

File description

• savedMaxItem.json stores the item number saved in database;
• downloadData.js download unrecorded items from hacker-news api into mongodb

Usage

initialize database

1. set the number in savedMaxItem.json to 1
2. node downloadData.js