如何在 execCommand formatBlock 'p' 标签中添加类或 id 或 CSS 样式？

Question

I want to use execcommand 'formatblock' for select a line by 'p' tag or span with specific class or Id or any css style in my contenteditable div(own rich text editor). i searched a lot for this, but i could not find anything which valuable for me.

document.execCommand('formatblock', false, 'p');

How can i add class or id or css in this code?

Answer 1

If you want to add id or class for CSS in content editable div, then you will use below code---

          <script>
             function CssFnctn()
                {
                  document.execCommand('formatblock', false, 'p')
                  var listId = window.getSelection().focusNode.parentNode;
                  $(listId).addClass("oder2");
                 }
           </script>


.oder2
    {
       padding-left: 3em;
    }

Answer 2

There are many ways to do it. Just use execCommand 'insertHTML' instead to replace selected text with wrapped code. Like this:

selection = window.getSelection().toString();
wrappedselection = '<span class="accent" style="somestyle">' + selection + '</span>';
document.execCommand('insertHTML', false, wrappedselection);

This will remove breaklines, tags like <b> , <i> and other intext-html-formatting - to keep them you need smth like this (thx to post ):

selection = window.getSelection().getRangeAt(0).cloneContents();
span = document.createElement('span');
span.appendChild(selection);
wrappedselection = '<span class="accent1">'+span.innerHTML+'</span>';
document.execCommand('insertHTML', false, wrappedselection);

This insertHTML does not works with IE. Check Documentation https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand

Answer 3

I got the solution.

Javascript:

function line(){

              window.execCommand('formatblock', false, 'p');
                selectedElement = window.getSelection().focusNode.parentNode;
                selectedElement.style.marginBottom = '100px';
            }

HTML

<input type="button" value="addMarginBottom" onclick="javascript:line();"/>
<div class="textcontent" contenteditable ="true"></div>

This is work perfectly for me. But i can not make jsfiddle right now. This is work for one line fine but not multiple line.

Answer 4

Try this code: http://jsfiddle.net/lotusgodkk/GCu2D/57/

Javascript:

$(document).ready(function () {
    $('div').click(function () {
     var sel = window.getSelection();
     var range = document.createRange();
     el = document.getElementById('one'); //Get the element
     range.selectNodeContents(el);
     sel.removeAllRanges();
     sel.addRange(range);
     document.execCommand('formatblock', false, null); //execute command.
     document.execCommand('bold', false, null); //execute command.
    });
});

HTML

<div contenteditable="true">
  <p id="one">Sample text</p>
  <p>Sample text 2</p>
</div>

Answer 5

I had the same issue. I ended up using jQuery.

document.execCommand(optionCommand, false, null);

let snippets = $('.js-editor-content-snippet');
let lists = snippets.find('ul, ol');

lists.css({ margin: '0', padding: '0 0 0 20px' });
lists.find('li').css({ margin: '0 0 12px' });

There is also this great library that could be helpful: https://github.com/timdown/rangy/wiki/Class-Applier-Module

rangy.createClassApplier(String theClass[, Object options[, Array tagNames]])

Answer 6

To add the class to the p tag, I think it should actually be like this...

function CssFnctn() {
  document.execCommand('formatblock', false, 'p')
  var listId = window.getSelection().anchorNode.parentNode;
  listId.classList = 'oder2';
}

Notice the anchorNode instead of focusNode

Answer 7

One way to reliably find the element(s) created by execCommand is to compare the list of child elements before and after running it. Any elements that didin't exist before execCommand was called we're added by execCommand .

Here's an example:

// `container` is the contenteditable container element
// Get all the existing elements
const elementsBefore = Array.from(container.querySelectorAll("*"));
// Run the command (wrap selection in a p tag)
document.execCommand("formatblock", false, "p");
// Get all the existing elements again
const elementsAfter = Array.from(container.querySelectorAll("*"));
// Find any that elements didn't exist before `execCommand` and select the first one
const newElement = elementsAfter.filter(e => !elementsBefore.includes(e))[0]
// `newElements` should now be the p tag that was added