{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "e28a05ae-c5c5-4dc5-88b4-9090492f13e2",
   "metadata": {},
   "source": [
    "# qs\n",
    "- A querystring parsing and stringifying library with some added security.\n",
    "- [https://www.npmjs.com/package/qs](https://www.npmjs.com/package/qs)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "a1d79a6e-3479-41cc-bc94-bd4d5b55e788",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{ a: 'b', c: 'd' }"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "qs.parse('?a=b&c=d', { ignoreQueryPrefix: true })"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "b6a27923-d70c-4403-b977-9d3901a9c204",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/admin/reginfo?id=123&regId=456&category=789\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "undefined"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "const item = {id:123,regId:456,category:789}\n",
    "const url = `/admin/reginfo?${qs.stringify(item)}`\n",
    "console.log(url)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "0425adb4-a182-47a5-8fc2-8df4815069eb",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{ a: 'b' }"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "qs.parse('a=b&c=d', { parameterLimit: 1 });"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "f7f2490d-52b3-41c8-a19f-d6be53095d09",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{ a: 'b', c: 'd' }"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "qs.parse('?a=b&c=d', { ignoreQueryPrefix: true })"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "a317f8a9-6944-47f5-99b8-9cabac49608e",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{ a: 'b', c: 'd' }"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "qs.parse('a=b;c=d', { delimiter: ';' })"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "da3327c1-6146-43f5-9301-dd066170ec53",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{ a: 'b', c: 'd', e: 'f' }"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import qs from \"qs\"\n",
    "qs.parse('a=b;c=d,e=f', { delimiter: /[;,]/ })"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "c32e7427-7d1a-4f0d-a84f-b20403290883",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "undefined"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "var qs = require('qs');\n",
    "var assert = require('assert');\n",
    "\n",
    "var obj = qs.parse('a=c');\n",
    "assert.deepEqual(obj, { a: 'c' });\n",
    "\n",
    "var str = qs.stringify(obj);\n",
    "assert.equal(str, 'a=c');\n"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "jp-Babel (Node.js)",
   "language": "babel",
   "name": "babel"
  },
  "language_info": {
   "file_extension": ".js",
   "mimetype": "application/javascript",
   "name": "javascript",
   "version": "17.9.0"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}