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JavaScript JavaScript and the DOM (Retiring) Making Changes to the DOM Removing Nodes

Harrison Greeves
Harrison Greeves
2,920 Points
Posted by Harrison Greeves
Harrison Greeves
2,920 Points

My remove button won't remove the added item

<!DOCTYPE html>
<html>
  <head>
    <title>JavaScript and the DOM</title>
    <link rel="stylesheet" href="css/style.css">
  </head>
  <body>
    <h1 id="myHeading">JavaScript and the DOM</h1>
    <p>Making a web page interactive</p> 
    <button id = "toggleList">Hide list</button>
    <div class = "list">
      <p class = "description">Things that are purple:</p>
      <input type = "text" class = "description">
      <button class = "description">Change list</button>
      <ul>
        <li>grapes</li>
        <li>amethyst</li>
        <li>lavender</li>
        <li>plums</li>
      </ul>
      <input type = "text" class = "addItemInput">
      <button class = "addItemButton">Add item</button>
      <button class = "removeItemButton">Remove last item</button>
    </div>
    <script src="app.js"></script>
  </body>
</html>

const toggleList = document.getElementById("toggleList"); 
const listDiv = document.querySelector(".list"); 
const descriptionInput = document.querySelector("input.description");
const descriptionP = document.querySelector("p.description");
const descriptionButton = document.querySelector("button.description");
const addItemInput = document.querySelector("input.addItemInput");
const addItemButton = document.querySelector("button.addItemButton");
const removeItemButton = document.querySelector("button.removeItemButton");

toggleList.addEventListener("click", () => {
  if (listDiv.style.display == "none") {
    toggleList.textContent = "Hide list";
    listDiv.style.display = "block";
  } else {
    toggleList.textContent = "Show list"; 
    listDiv.style.display = "none";
  } 
});

descriptionButton.addEventListener("click", () => {
      descriptionP.innerHTML = descriptionInput.value + ":";
      descriptionInput.value = " ";                            
});

addItemButton.addEventListener("click", () => {
   let ul = document.getElementsByTagName("ul")[0]; 
   let li = document.createElement("li"); 
   li.textContent = addItemInput.value;
   ul.appendChild(li); 
   addItemInput.value = " ";
});

removeItemButton.addEventListener("click", () => {
   let ul = document.getElementsByTagName("ul")[0]; 
   let li = document.querySelector("li: last-child"); 
   ul.removeChild(li); 
});

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

There's a stray space between the colon and the identifier of a pseudo-element selector near the end of the script:

   let li = document.querySelector("li: last-child");   // original
   let li = document.querySelector("li:last-child");    // fixed