Debugging Javascript (Plain JS)- B Case

This supports a software dev. class for businesspeople that you can find here: https://www.alexandercowan.com/making-html-manageable And a case you can find here: https://www.alexandercowan.com/making-html-manageable

by Alex Cowan

HTML

<div class="top-bar">
  <ul class="nav-list">
    <li><a href="#">Homes</a></li>
    <li><a href="#">Parts</a></li>
    <li><a href="#">Search</a></li>
    <li><a href="#">Help</a></li>
  </ul>

  <div id="search-box">
    <input type="text" name="parts-search" placeholder="Mfg., Model, or Part Number" size=30>
  </div>
</div>

<div id="toggle-search">
  <img src="https://www.alexandercowan.com/wp-content/uploads/2018/01/show-hide-icon.png" alt="search control toggle">
</div>

<div id="search-controls">
  <div id="result-sort">
    Sort By
    <select>
      <option value="None">Popularity</option>
      <option value="Acme">Price</option>
      <option value="Bacme">Manufacturer</option>
    </select>
  </div>
  <div id="filter-parts">
    Search By
    <select id="ddMfr">
      <option value="All">Manufacturer</option>
      <option value="Acme">Acme</option>
      <option value="Bacme">Bacme</option>
      <option value="Cacme">Cacme</option>
      <option value="Dacme">Dacme</option>
    </select>
    <select id="ddModel">
      <option value="All">Model</option>
      <option value="TooCool">TooCool</option>
      <option value="TooHot">TooHot</option>
      <option value="JustRight">JustRight</option>
      <option value="Coolerator">Coolerator</option>
    </select>
    <select>
      <option value="All">Type</option>
      <option value="Sniggler">Sniggler</option>
      <option value="Wiggler">Wiggler</option>
      <option value="Jiggler">Jiggler</option>
      <option value="Tiggler">Tiggler</option>
    </select>
  </div>
  <button type="button" id='go-btn'>Go</button>
</div>

<div id="parts-content">
  <div class="catalog-part" mfr="Acme" model="TooCool">
    <img src="https://www.alexandercowan.com/wp-content/uploads/2017/12/PCB-board-150px.png" alt="PCB board">
    <div class="overlay">
      <p>
        Acme #GR1688<br>87 Orders<br>$12.30 Same Day</p>
    </div>
  </div>
  
  <div class="catalog-part" mfr="Bacme" model="TooHot">
    <img...

CSS

.top-bar, #search-box, .nav-list li, .nav-list a {
	background-color: #002D45;
	font-family: Proxima Nova,helvetica neue,helvetica,sans-serif;
	font-weight: bold;
	font-size: 110%;
	color: #ffffff;
}

.top-bar {
	color: #FFFFFF;
	height: 40px;
	margin: 0px;
	padding: 10px;
    display: flex;
    align-items: center;
}

.nav-list {
    list-style-type: none;
    padding: 0;
		display: inline;
}

.nav-list li {
	    float: left;
}

.nav-list a {
    display: inline;
    padding: 8px;
		text-decoration: none;
}

#search-box {
	margin-left: auto;
	margin-right: 0;
	padding: 10px;
 }

#toggle-search {
  position: relative;
  padding: 5px 0px;
  height: 100%;
  width: 100%;
 }

#toggle-search img {
  margin-left: 94%;
 }

#search-controls {
	background-color: #ffffff;
	padding: 5px 15px 15px 15px;
	font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;
	font-size: 70%;
  display: flex;
  align-items: center;
}


#filter-parts {
	float: right;
	margin-left: auto;
	margin-right: 0;
	padding-right: 5px;
 }

.catalog-part {
  margin: 2px;
  padding: 0px 5px;
  float: left;
  border-style: solid;
  border-color: #808285;
  border-width: 1px;
  width: 150px;
  height: 200px;
  line-height: 200px;
	display: table-cell;
  position: relative;
}

.catalog-part img {
  height: auto;
	vertical-align: middle;
  width: 100%;
}

.overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  width: 100%;
  opacity: 0;
  transition: 0.5s ease;
  background-color: #f4f4f4;
	display: inline-table;
}

.catalog-part:hover .overlay {
  opacity: 0.75;
}

p {
	font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;
  line-height: 1;
	overflow: scroll;
}

.catalog-part p {
	vertical-align: middle;
	text-align: center;
  color: black;
	display: table-cell;
	font-size: 80%;
	font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;
}

JavaScript

//find the "Go" button in the HTML body
const goButton = document.getElementById('go-btn');

//listen for the user clicking on it and if they do, call function 'goClick'
goButton.addEventListener('click', filterparts);

function filterParts() {
  //Is the function working?
  console.log('go!');

  //get any values selected in the dropdown and make sure it's working
  selMfr = document.getElementById('ddMfr').value
  selModel = document.getElementById('ddModel').value
  console.log("the selected mfr is " + selMfr + ", and the selected model is " + selModel);

  //filter out items that don't match the dropdown- but only run if a filter's applied
  //get all the parts- that is, items with class "catalog-part"
  var parts = document.getElementsByClassName("catalog-part");
  //go through each one
  for (var i = 0; i < parts.length; i++) {
    //if the manufacturer doesn't match the dropdown, then hide it
    if ((selMfr != parts.item(i).getAttribute('mfr')) && (selMfr != "All")) {
      console.log("mfr diff");
      parts.item(i).style.display = "none";
    }
    //...and same for model
    if ((selModel != parts.item(i).getAttribute('model')) && (selModel != "All")) {
      console.log("model diff");
      parts.item(i).style.display = "none";
    }

  }
}