javascriptarrayseventsmultiple-constructors

javascript How to add constructor object with user input


I'm looking for help troubleshooting this code. My assignment is to make a blog which I can make multiple new articles on. I am using an event listener, linked to the submit button. But when I run the code with text inserted in the textboxes nothing happens. I am given no console errors, so I don't know what is going wrong. Please ask for more information if needed, as I might've missed something crucial.

The problem seems to be, that I can't seem to make another constructor object inside my function. What is going wrong here.. Am I missing something?

Thanks in advance.

//Post object model
function Post(title, image, text) {
  this.title = title;
  this.date = new Date();
  this.image = image;
  this.text = text;
}

//Blog object model
function Blog() {
  this.post = [];

  this.addPost = function(post) {
    this.post.push(post);
  }
}

//new Post object
var post1 = new Post('1', 'hej.jpg', 'hej hej hej');

//new Blog object
var blog = new Blog;

//adds the post to the empty array
blog.addPost(post1);

//function to add Blog posts to HTML content
function addToHTML() {
  for(var i = 0; i < blog.post.length; i++) {
    var article = document.querySelector('#blog_posts');
    var title = document.createElement('h1');
    var date = document.createElement('p');
    var image = document.createElement('img');
    var text = document.createElement('p');
    var blog_title = blog.post[i].title;
    var blog_date = blog.post[i].date;
    var blog_image = blog.post[i].image;
    var blog_text = blog.post[i].text;
    title.textContent=blog_title;
    date.textContent=blog_date;
    image.setAttribute('src', blog_image);
    text.textContent=blog_text;
    article.appendChild(title);
    article.appendChild(date);
    article.appendChild(image);
    article.appendChild(text);
  }
}

//Submit button
var submit = document.getElementById('submit');

//Event listener
submit.addEventListener('click', function getTarget() {
  var jsTitleInput = document.getElementById('title_input').value;
  var jsImageInput = document.getElementById('image_input').value;
  var jsTextInput = document.getElementById('text1_input').value;
  var newPostf = new Post(jsTitleInput, jsImageInput, jsTextInput); 
  blog.addPost(newPostf);
  })
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
      <title>CodeCamp blog</title>
        <link href="css.css" type="text/css" rel="stylesheet"/>
</head>
<body>
  <div id="container">
    <h1 id="maintitle">Foodparadise</h1>
      <nav id="menu">
        <ul>
          <li class="menu_left"><a href="">Home</a></li>
          <li class="menu_left"><a href="">About</a></li>
          <li class="menu_right"><input type="text" name="search" placeholder="Search.."></li>
          <li class="menu_right"><a href="" id="new_post" class="btn">New post</a>
          </ul>
        </nav>

        <article id="blog_posts"></article>

        <article id="archive"></article>

        <div id='newPost'>
          <form action='html.html' method='post'>
          <p>Title:</p>
            <input type='text' name='title' id='title_input'>

          <p>Image Name: </p>
            <input type='text' name='image name' id='image_input'>

          <p>Text:</p>
            <input type='text' name='text' id='text1_input'>
          <br/>
          <input type='submit' name='submit' value='Submit' id='submit'>
        </form>
       </div>
      </div>
  <script src="js.js"></script>
</body>
</html>


Solution

  • Couple things:

    IF your intention is to stay on the same page, you have to remove the method and action from the form.

    <form action='' method='post'>
    
    becomes
    
    <form>
    

    And then call e.preventDefault() inside of the submit event handler

    submit.addEventListener('click', function getTarget(e) {
      e.preventDefault()
    

    You did not call the addToHTML function anywhere

    submit.addEventListener('click', function getTarget(e) {
      e.preventDefault()
      var jsTitleInput = document.getElementById('title_input').value;
      var jsImageInput = document.getElementById('image_input').value;
      var jsTextInput = document.getElementById('text1_input').value;
      var newPostf = new Post(jsTitleInput, jsImageInput, jsTextInput); 
      blog.addPost(newPostf);
      addToHTML();
     });
    

    Final result:

    //Post object model
    function Post(title, image, text) {
      this.title = title;
      this.date = new Date();
      this.image = image;
      this.text = text;
    }
    
    //Blog object model
    function Blog() {
      this.post = [];
    
      this.addPost = function(post) {
        this.post.push(post);
      }
    }
    
    //new Post object
    var post1 = new Post('1', 'hej.jpg', 'hej hej hej');
    
    //new Blog object
    var blog = new Blog();
    
    //adds the post to the empty array
    blog.addPost(post1);
    
    //function to add Blog posts to HTML content
    function addToHTML() {
      for(var i = 0; i < blog.post.length; i++) {
        var article = document.querySelector('#blog_posts');
        var title = document.createElement('h1');
        var date = document.createElement('p');
        var image = document.createElement('img');
        var text = document.createElement('p');
        var blog_title = blog.post[i].title;
        var blog_date = blog.post[i].date;
        var blog_image = blog.post[i].image;
        var blog_text = blog.post[i].text;
        title.textContent=blog_title;
        date.textContent=blog_date;
        image.setAttribute('src', blog_image);
        text.textContent=blog_text;
        article.appendChild(title);
        article.appendChild(date);
        article.appendChild(image);
        article.appendChild(text);
      }
    }
    
    //Submit button
    var submit = document.getElementById('submit');
    
    //Event listener
    submit.addEventListener('click', function getTarget(e) {
      e.preventDefault()
      var jsTitleInput = document.getElementById('title_input').value;
      var jsImageInput = document.getElementById('image_input').value;
      var jsTextInput = document.getElementById('text1_input').value;
      var newPostf = new Post(jsTitleInput, jsImageInput, jsTextInput); 
      blog.addPost(newPostf);
      addToHTML();
    });
      <div id="container">
        <h1 id="maintitle">Foodparadise</h1>
          <nav id="menu">
            <ul>
              <li class="menu_left"><a href="">Home</a></li>
              <li class="menu_left"><a href="">About</a></li>
              <li class="menu_right"><input type="text" name="search" placeholder="Search.."></li>
              <li class="menu_right"><a href="" id="new_post" class="btn">New post</a>
              </ul>
            </nav>
    
            <article id="blog_posts"></article>
    
            <article id="archive"></article>
    
            <div id='newPost'>
              <form>
              <p>Title:</p>
                <input type='text' name='title' id='title_input'>
    
              <p>Image Name: </p>
                <input type='text' name='image name' id='image_input'>
    
              <p>Text:</p>
                <input type='text' name='text' id='text1_input'>
              <br/>
              <input type='submit' name='submit' value='Submit' id='submit'>
            </form>
           </div>
          </div>