Lab9_Starter/index.html at main · srjsml/Lab9_Starter · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Lab 9</title>

  <style>
    button {
      margin: 3px;
    }

    button:hover {
      cursor: pointer;
    }

    #first-num,
    #second-num {
      width: 60px;
    }

    output {
      border: 1px solid gray;
      display: block;
      height: 18px;
      margin-top: 5px;
      padding: 5px;
      width: 240px;
    }

    main {
      width: 800px;
    }

    #error-btns {
      column-gap: 5px;
      display: flex;
      flex-wrap: wrap;
      margin-top: 30px;
      row-gap: 5px;
    }

    #error-btns>* {
      padding: 8px 2px;
      width: 122px;
    }
  </style>
</head>

<body>
  <main>
    <form>
      <fieldset>
        <legend>Error Calculator</legend>
        <input name="first-num" id="first-num" />
        <select name="operator" id="operator">
          <option>+</option>
          <option>-</option>
          <option>*</option>
          <option>/</option>
        </select>
        <input name="second-num" id="second-num" />
        <button id="calculate">Calculate</button>
        <br />
        <output></output>
      </fieldset>
    </form>

    <section id="error-btns">
      <button>Console Log</button>
      <button>Console Error</button>
      <button>Console Count</button>
      <button>Console Warn</button>
      <button>Console Assert</button>
      <button>Console Clear</button>
      <button>Console Dir</button>
      <button>Console dirxml</button>
      <button>Console Group Start</button>
      <button>Console Group End</button>
      <button>Console Table</button>
      <button>Start Timer</button>
      <button>End Timer</button>
      <button>Console Trace</button>
      <button>Trigger a Global Error</button>
    </section>
  </main>
  <script src="https://cdn.trackjs.com/agent/v3/latest/t.js"></script>
  <script>
    window.TrackJS && TrackJS.install({
      token: "c047cc5d155e48aa93ab5afac48d6f2d"
      // for more configuration options, see https://docs.trackjs.com
    });
  </script>

  <script>
    let form = document.querySelector('form');
    form.addEventListener('submit', e => {
      e.preventDefault();
      let output = document.querySelector('output');
      let firstNum = document.querySelector('#first-num').value;
      let secondNum = document.querySelector('#second-num').value;
      let operator = document.querySelector('#operator').value;
      output.innerHTML = eval(`${firstNum} ${operator} ${secondNum}`);
    });

    let errorBtns = Array.from(document.querySelectorAll('#error-btns > button'));

    // Start your code here
    // You may move this JS to another file if you wish
    // console.log(errorBtns);

    TrackJS.track('Testing TrackJS!');

    // Console Log button
    errorBtns[0].addEventListener('click', () => {
      console.log('console log');
    });

    // Console Error button
    errorBtns[1].addEventListener('click', () => {
      console.error('you have an error in your program');
    });

    // Console count button
    errorBtns[2].addEventListener('click', () => {
      console.count('woah kenny error');
    });

    // Console warn button
    errorBtns[3].addEventListener('click', () => {
      console.warn('Your software is out of date!');
    });

    // Console assert button
    errorBtns[4].addEventListener('click', () => {
      const x = 33;
      const y = 3;
      const r = 'x should be greater than y'
      console.assert(x < y, {x, y, r});
      // console.assert(y < x, {x, y, r});
    });

    // Console clear button
    errorBtns[5].addEventListener('click', () => {
      console.clear();
    });

    // Console dir button
    errorBtns[6].addEventListener('click', () => {
      console.dir(document.head);
    });

    // Console dirxml button
    errorBtns[7].addEventListener('click', () => {
      console.dirxml(document);
    });

    // Console group start button
    errorBtns[8].addEventListener('click', () => {
      console.group('Bunch of Errors');
      console.log('These are the errors within the group, "Bunch of Errors"');
    });

    // Console group end button
    errorBtns[9].addEventListener('click', () => {
      console.groupEnd();
      console.log('The group for "Bunch of Errors" is closing');
    });

    // Console table button
    errorBtns[10].addEventListener('click', () => {
      console.table([ {first: 'Seeraj', last: 'Somla'}, {first: 'Dan', last: 'Parfait'}, {first: 'Oliver', last:'Tree'}]);
    });

    // Start timer button
    errorBtns[11].addEventListener('click', () => {
      console.time('Timer');
    });

    // End timer button
    errorBtns[12].addEventListener('click', () => {
      console.timeEnd('Timer');
    });

    // Console trace button
    errorBtns[13].addEventListener('click', () => {
      const fourth = () => { third(); };
      const third = () => { second(); };
      const second = () => { first(); };
      const first = () => { console.trace(); };
      fourth();
    });

    // Custom global error
    class newGlobalError extends Error {
      constructor(error) {
        super(error);
        this.name = "newGlobalError";
      }
    }

    // Trigger a global event button
    errorBtns[14].addEventListener('click', () => {
      try {
        throw error;
      } catch(err) {
        console.log('This error broke the program! Fix it.');
      } finally {
        alert('Throwing a Global Error!');
        throw new newGlobalError('Global Error is being thrown');
      }
    });

    // Function to call in window event listener when global error is triggered
    function callGlobalError(message) {
      alert(message);
    }

    // Event listener
    window.addEventListener('error', () => {
      console.log("Listening for Global Error...");
      callGlobalError("You have caused a Global Error. Press 'OK' to continue.");
    })
  </script>

</body>

</html>