hn job query search

README.md

HN Job Query

for "Who's Hiring"

Conveniently query HackerNews 'Who's Hiring' posts for relevant positions using a console function in Chrome.

---

Usage

Add these files to a folder and load the folder as an unpacked extension in Chrome. If you don't know how to load an unpacked extension, follow these instructions:

https://developer.chrome.com/extensions/getstarted

To use the function, just open your console and form your query using the hnJobQuery function.

Example:

hnJobQuery(['remote', 'toronto'],['remote', 'python']);
▶︎ {shown: 18, total: 499}

---

Based on: https://gist.github.com/kristopolous/19260ae54967c2219da8

Relevant: https://news.ycombinator.com/item?id=10313519

injector.js

const scriptElement = document.createElement('script');

scriptElement.innerHTML = `
function hnJobQuery() {
  var
    // HN is done with very unsemantic classes.
    job_list = Array.prototype.slice.call(document.querySelectorAll('.c5a,.cae,.c00,.c9c,.cdd,.c73,.c88')),
    query_list = Array.prototype.slice.call(arguments),
    shown = 0, total = job_list.length;

  // Traverses up the dom stack trying to find a match of a specific class
  function up_to(node, klass) {
    if (node.classList.contains(klass)) {
      return node;
    }
    if(node === document.body) {
      throw new Exception();
    }
    return up_to(node.parentNode, klass);
  }

  function display(node, what) {
    up_to(node, 'athing').style.display = what;
  }

  // If we have a RegEx, return it
  // Otherwise make it a case insensitive regex.
  function destring(what) {
    return what.test ? what : new RegExp(what.toString(), 'i');
  }

  // Hide all the postings
  job_list.forEach(function(node) {
    display(node, 'none');
  });

  query_list.forEach(function(query) {
    if (query.forEach) {
      var and_query_list = query.map(destring);

      job_list.forEach(function(node) {
        var
          doesMatch = true,
          toTest = node.innerHTML;

        and_query_list.forEach(function(query) {
          doesMatch &= toTest.search(query) > -1;
        })

        if(doesMatch) {
          display(node, 'block');
          shown ++;
        }
      });

    } else {
      query = destring(query);

      job_list.forEach(function(node) {
        if(node.innerHTML.search(query) > -1) {
          display(node, 'block');
          shown ++;
        }
      });
    }
  });

  return {shown: shown, total: total}
}
`;

scriptElement.onload = _ => {
  this.remove();
};
(document.body).appendChild(scriptElement);

manifest.json

{
  "manifest_version": 2,

  "name": "HackerNews Job Search Query",
  "version": "0.0.0",
  "description": "Conveniently query HackerNews 'Who's Hiring' posts for relevant positions.",

  "permissions": [
    "activeTab"
  ],

  "content_scripts": [{
    "matches": [
      "http://news.ycombinator.com/*",
      "https://news.ycombinator.com/*"
    ],
    "js": [
      "injector.js"
    ]
  }]
}