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javascript - 如何在页面上提交新项目？(jQuery)

问题描述

为学校做项目。我必须能够将杂货项目添加到列表中，其中包含新项目的框内的控件“检查”和“删除”。清单上已有 4 项供参考。我已经尽可能地添加了盒子，里面有食物，但我似乎无法得到里面的按钮，以及与列表中其他人相同的字体和样式。

添加项目时我得到的屏幕截图 jQuery

function addItem(){
    $('#js-shopping-list-form').submit(function(event){
        event.preventDefault();
        const textInput = $('#shopping-list-entry').val();
        $('ul').append('<li>' + textInput + '</li>')
    });
};
$(addItem);

CSS

* {
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
}

button, input[type="text"] {
  padding: 5px;
}

button:hover {
  cursor: pointer;
}

#shopping-list-item {
  width: 250px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

.shopping-list {
  list-style: none;
  padding-left: 0;
}

.shopping-list > li {
  margin-bottom: 20px;
  border: 1px solid grey;
  padding: 20px;
}

.shopping-item {
  display: block;
  color: grey;
  font-style: italic;
  font-size: 20px;
  margin-bottom: 15px;
}

.shopping-item__checked {
  text-decoration: line-through;
}

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Shopping List</title>

  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css">
  <link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">

  <link rel="stylesheet" href="main.css">
</head>
<body>

  <div class="container">
    <h1>Shopping List</h1>

    <form id="js-shopping-list-form">
      <label for="shopping-list-entry">Add an item</label>
      <input type="text" name="shopping-list-entry" id="shopping-list-entry" placeholder="e.g., broccoli">
      <button type="submit">Add item</button>
    </form>

    <ul class="shopping-list">
      <li>
        <span class="shopping-item">apples</span>
        <div class="shopping-item-controls">
          <button class="shopping-item-toggle">
            <span class="button-label">check</span>
          </button>
          <button class="shopping-item-delete">
            <span class="button-label">delete</span>
          </button>
        </div>
      </li>
      <li>
        <span class="shopping-item">oranges</span>
        <div class="shopping-item-controls">
          <button class="shopping-item-toggle">
            <span class="button-label">check</span>
          </button>
          <button class="shopping-item-delete">
            <span class="button-label">delete</span>
          </button>
        </div>
      </li>
      <li>
        <span class="shopping-item shopping-item__checked">milk</span>
        <div class="shopping-item-controls">
          <button class="shopping-item-toggle">
            <span class="button-label">check</span>
          </button>
          <button class="shopping-item-delete">
            <span class="button-label">delete</span>
          </button>
        </div>
      </li>
      <li>
        <span class="shopping-item">bread</span>
        <div class="shopping-item-controls">
          <button class="shopping-item-toggle">
            <span class="button-label">check</span>
          </button>
          <button class="shopping-item-delete">
            <span class="button-label">delete</span>
          </button>
        </div>
      </li>
    </ul>
  </div>

  <script
    src="https://code.jquery.com/jquery-3.4.1.js"
    integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
    crossorigin="anonymous"></script>
  <script src="index.js"></script>

</body>
</html>

标签： javascriptjqueryhtmlcss

解决方案

您在 jquery 中缺少代码。替换代码并检查


function addItem(){
    $('#js-shopping-list-form').submit(function(event){
        event.preventDefault();
        const textInput = $('#shopping-list-entry').val();
        $('ul').append('<li><span class="shopping-item ">' + textInput +'</span><div class="shopping-item-controls"><button class="shopping-item-toggle"><span class="button-label">check</span></button><button class="shopping-item-delete"><span class="button-label">delete</span></button></div></li>')


    });
}
$(addItem);``

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