contenteditable .execCommand() not firing?

问题

Im experimenting on a custom WYSIWYG editor using contenteditable. I'm using the following code to make the selected text bold:

$('.wysiwyg-b').click(function() {
    document.execCommand('bold',false,true);
    alert('hi');
});

<li class="wysiwyg-b" title="Bold"><img src="images/icons/black/png/font_bold_icon&16.png"> </li>

And it looks like this:

My problem is, the text is only made bold when I click on the image(B), not when I click on the blue surrounding area....but the alert does. What could be causing this issue?

Here is a fiddle http://jsfiddle.net/3b4QM/ I changed the image to a B because the path was broken.

console.log(this)

returns

<li class="wysiwyg-b" original-title="Bold">

回答1:

I faced the same problem when I built up Froala Editor (https://froala.com/wysiwyg-editor). It happens because you loose the selection when you click the surroundings. Placing a button inside the <li> will solve the problem. Just make sure the button fits the entire <li>.

See http://jsfiddle.net/xdCjD/2/

In HTML:

<div id="apt-wysiwyg">
    <ul>
        <li class="wysiwyg-b" title="Bold"><button><img src="images/icons/black/png/font_bold_icon&16.png"></button></li>
    </ul>
</div>

In CSS, remove the padding from li and set it to the button

#apt-wysiwyg li button {
    padding: 5px;
    height: 30px;
    width: 30px; 
    background: transparent;
    border:none;
}

回答2:

Quick suggestion if you're writing it into the page after the page has loaded try:

$('.wysiwyg-b').on('click', function() {
    document.execCommand('bold',false,true);
    alert('hi');
});

Although you are getting the img to register the event so it might not help. Worth a shot anyway

回答3:

What happens is that your editable text gets deselected when you click the li element. I think binding the event to mousedown will solve your problem:

 $(".wysiwyg-b").on('mousedown',function() {
        var test=document.execCommand('bold',false,true);
        alert(test);        
 });

来源：https://stackoverflow.com/questions/21546993/contenteditable-execcommand-not-firing

标签

javascript

jquery

html

wysiwyg