Remove tags from selection

Question

I've got the following code:

<div contenteditable="true" id="editor">
    <p>This is example text with <span class="spoiler">spoiler<strong>s</strong></span></p>
  <p>The <span class="spoiler">spoiler</span> exists in multiple paragraphs</p>
</div>
<button onclick="removeSpoiler();">remove spoiler</button>

The user can select text and after that click on the button to remove the <span class="spoiler"> formatting. After clicking the button, the text must be still selected.

For example: The user selects "with spoilers. The sp". He clicks on 'remove spoiler'. The desired output is:

<div contenteditable="true" id="editor">
    <p>This is example text with spoiler<strong>s</strong></p>
  <p>The sp<span class="spoiler">oiler</span> exists in multiple paragraphs</p>
</div>
<button onclick="removeSpoiler();">remove spoiler</button>

A jsFiddle of my attempt (I really don't know where to go from there): http://jsfiddle.net/632cr/

Answer 1

The fastest and easiest way to do this is to use rangy framework and its CSSClassApplier module.

It's easy and your code could look like this:

rangy.init();

var cssClassApplierModule = rangy.modules.CssClassApplier;
var classApplier = rangy.createCssClassApplier('spoiler');

function removeSpoiler(){
    classApplier.undoToSelection(editor);

    // it's some preview div
    $('#preview').text( $(editor).html() );
}

See the result demo here.