Introduction

In Chinese postal system, a postcode is identified by three levels: province, city and county. This package allows you to search search the postcode by the given address identified by those three parameters. It also provides the functionality to search address from a given postcode.

GitHub page: (https://github.com/xtu/chinese-postcode)
NPM: (https://www.npmjs.com/package/chinese-postcode)

Try it on RunKit: (https://runkit.com/embed/fa31ejpzgvd1)

This package would enable developers to provide a functionality that automatically fills postcode for users. Postcode system is very poor designed in China so people don't often remember them.

Install

To get started, simply install it with npm:

npm install chinese-postcode

Usage

var pc = require('chinese-postcode');
// search addresses by postcode
var addresses = pc.getAddress('100093');
// search postcode by address
var postcode = pc.getPostcode({
    province: '湖南',
    city: '怀化市',
    county: '靖州苗族侗族自治县'
});

API

The public APIs have documentations so the usages are quite easy to follow.

• Search addresses by a specified postcode.

/**
 * @param postcode  The postcode to be searched for.
 * @returns         Returns the addresses that use this postcode. Note it might return more than one address. Returns undefined if not found.
 */
function getAddress(postcode: string): Address[];

• Search postcode by a specified address.

/**
 * @param address   The address to be searched for.
 * @returns         Returns the postcode of this address. Returns undefined if not found.
 */
function getPostcode(address: Address): string;

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