将可编辑 <div> 或文本区域中的文本格式插入数据库

Question

我目前正在为我自己的网站开发一个个人项目，我正在尝试添加将格式化文本存储到数据库中的功能。到目前为止，我所做的是能够将字体从斜体更改为粗体作为示例，但我完全不知道如何将其传递到数据库。

      <style>
            #fake_textarea {
      width: 100%;
      height: 200px;
      border: 1px solid red;
    }
    
    #jBold {
      font-weigth: bold;
    }
    #jItalic{
        font-style:italic;
    }
        </style>
        <script src="/scripts/snippet-javascript-console.min.js?v=1"></script>
    
    <body>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <button id="jBold"><b>B</b></button><button id="jItalic"><i>I</i></button>
    <div id='fake_textarea' contenteditable>
      Select some text and click the button to make it bold...
      <br>Or write your own text
    </div>
        <script type="text/javascript">
            $(document).ready(function() {
      $('#jBold').click(function() {
        document.execCommand('bold');
      });
    });
     
        </script>
           <script type="text/javascript">
           $(document).ready(function() {
      $('#jItalic').click(function() {
        document.execCommand('italic');
      });
    });
     
        </script>
        
    </body>
    </html>

样本工作： codepen

Answer 1

要访问该可编辑 div 中的内容，您可以使用：

let content = $('#fake_textarea').html();

关于将数据发送到 PHP，最简单的解决方案可能是使用 Ajax。

备选

如果您不想使用 Ajax 而是使用普通表单 post，您可以让按钮触发一个获取内容并将其填充到隐藏字段中的函数表格，然后提交。

类似这样的东西：（未经测试的伪代码）

HTML:

<form method="post" action="foo.php" id="some-form">
    <input type="hidden" name="content" id="some-hidden-input" />
    <div id="fake_textarea" ...></div>
    <button id="submit-button"></button>
</form>

JS:

$('#submit-button').on('click', function (e) {
    // Stop the default submission
    e.preventDefault();

    // Get the content from the div
    let content = $('#fake_textarea').html();

    // Store the content in a hidden input
    $('#some-hidden-input').val(content);

    // Submit the real form
    $('#some-form').submit();
});

备注

我在这些示例中使用了 jQuery，因为您表明您正在使用它。所有这些当然也可以在 vanilla JS 中完成。

Answer 2

好的，所以我稍微调整了 Magnus 的代码，非常感谢他帮助我解决了这个问题。

textarea.php 您可以在此处编写自己的内容、格式化文本并将其放入 php 文件，然后再将其插入数据库。我也为那些想从中学习的人添加了评论。




    <style>
        #fake_textarea {
  width: 100%;
  height: 200px;
  border: 1px solid red;
}
<!-- Add css to modify the text -->
#jBold {
  font-weigth: bold;
}
#jItalic{
    font-style:italic;
}
#jUnderline{
    text-decoration: underline;
}
#jLT{
    text-decoration: line-through;
}
    </style>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.4.1.min.js"></script>
<body>
    <!-- Put buttons here to modify the format -->
    <div>

    <select id="select_font" onchange="changeFont(this);">
  <option value="Arial">Arial</option>
  <option value="Sans Serif" selected>Sans Serif</option>
  <option value="Comic Sans MS">Comic Sans MS</option>
  <option value="Times New Roman">Times New Roman</option>
  <option value="Courier New">Courier New</option>
  <option value="Verdana">Verdana</option>
  <option value="Trebuchet MS">Trebuchet MS</option>
  <option value="Arial Black">Arial Black</option>
  <option value="Impact">Impact</option>
  <option value="Bookman">Bookman</option>
  <option value="Garamond">Garamond</option>
  <option value="Palatino">Palatino</option>
  <option value="Georgia">Georgia</option>
</select>
<select id="select-size" onchange="changeSize(this);">
<option value="4">4</option>
  <option value="8">8</option>
  <option value="12">12</option>
  <option value="16">16</option>
  <option value="20">20</option>
  <option value="24">24</option>
  <option value="28">28</option>
  <option value="32">32</option>
  <option value="36">36</option>
  <option value="40">40</option>
  <option value="44">44</option>
  <option value="48">48</option>
  <option value="52">52</option>
  <option value="56">56</option>
  <option value="58">58</option>
</select>
<button id="jBold"><b>B</b></button><button id="jItalic"><i>I</i></button><button id="jUnderline">U</button><button id="jSuperScript">A<sup>A</sup></button><button id="jSubScript">A<sub>A</sub></button>
<button id="jLT">A</button>
<div>
    <!-- Add a form -->
    <form method="post" action="postcontent.php"  id="contentform">
    <!-- Add some hidden input in order for the form to submit some sort of value -->
        <input type="hidden" name="content" id="hiddeninput" />
        <!-- Add a place to insert the content -->
        <div id='fake_textarea' contenteditable>
              Select some text and click the button to make it bold...
              <br>Or write your own text
        </div>
        <!-- Add a submit button-->
        <button id="submit">Submit</button>
    </form>
    <!-- Script to make a selected text bold-->
        <script type="text/javascript">
            $(document).ready(function() {
                $('#jBold').click(function() {
                    document.execCommand('bold');
                });
            });

        </script>
        <!-- Script to make a selected text italic-->
           <script type="text/javascript">
           $(document).ready(function() {
                $('#jItalic').click(function() {
                    document.execCommand('italic');
                });
            });

        </script>
        <!-- Script to make add an underline-->
           <script type="text/javascript">
           $(document).ready(function() {
                $('#jUnderline').click(function() {
                    document.execCommand('underline');
                });
            });

        </script>
        <!-- Script to make make selected text a superscript-->
           <script type="text/javascript">
           $(document).ready(function() {
                $('#jSuperScript').click(function() {
                    document.execCommand('superscript');
                });
            });

        </script>
        <!-- Script to make make selected text a subscript-->
           <script type="text/javascript">
           $(document).ready(function() {
                $('#jSubScript').click(function() {
                    document.execCommand('subscript');
                });
            });

        </script>
                <!-- Script to add a line-through-->
           <script type="text/javascript">
           $(document).ready(function() {
                $('#jLT').click(function() {
                    document.execCommand('strikeThrough');
                });
            });

        </script>




        <!-- Changes the font type -->
        <script  type="text/javascript">
        function changeFont(font) {
            var sel = window.getSelection(); // Gets selection
            if (sel.rangeCount) {
            // Creates a new element, and insert the selected text with the chosen font inside
            var e = document.createElement('span');
            e.style = 'font-family:' + font.value + ';'; 
            e.innerHTML = sel.toString();

            // https://developer.mozilla.org/en-US/docs/Web/API/Selection/getRangeAt
            var range = sel.getRangeAt(0);
            range.deleteContents(); // Deletes selected text…
            range.insertNode(e); // … and inserts the new element at its place
            }
        }
        </script>
        <!-- Changes the font size -->
        <script  type="text/javascript">
        function changeSize(size) {
        var sel = window.getSelection(); // Gets selection
            if (sel.rangeCount) {
            // Creates a new element, and insert the selected text with the chosen font inside
            var e = document.createElement('span');
            e.style = 'font-size:' + size.value + 'px;'; 
            e.innerHTML = sel.toString();

            // https://developer.mozilla.org/en-US/docs/Web/API/Selection/getRangeAt
            var range = sel.getRangeAt(0);
            range.deleteContents(); // Deletes selected text…
            range.insertNode(e); // … and inserts the new element at its place
            }   
        }

        </script>

        <!-- Script to add value to the hidden input then submits it-->
        <script  type="text/javascript">

        $( "#submit" ).click(function() {

            var htmlString = $( "#fake_textarea" ).html();
            $('#hiddeninput').val(htmlString);
            // Submit the real form
            $('#contentform').submit();
        });

        </script>
</body>

postcontent.php 该文件将从隐藏输入抛出的值提交到数据库。

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {

//grabs the name of the hidden input that was posted
    $pcd= $_POST['content'];
    $uid="";
    $bid="";
    $cnum="";
    $cid="";
    //connect to database
    $mysqli = new mysqli("localhost","root","","nw");
//error checking the connection
if ($mysqli -> connect_errno) {
  echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
  exit();
}
//submits it
$stmt= $mysqli->prepare("INSERT INTO usercontent (userid, bookid, chapterid, chapternum,data) VALUES (?,?,?,?,?)");
$stmt->bind_param("sssss", $uid, $bid,$cid, $cnum,$pcd);
$stmt->execute();



$stmt -> close();
$mysqli -> close();
}


?>

希望这会像这个人帮助我一样帮助别人。

将可编辑 <div> 或文本区域中的文本格式插入数据库

Insert text format from an editable <div> or textarea into the database

javascript

php

html

css

rich-text-editor

备选

备注