Insert html at caret in a contenteditable div

by reading quickly and hoping not to be off topic, here is a track for those who, like me, need to insert code at the cursor level of a div:

document.getElementById('editeur').contentWindow.document.execCommand('insertHTML', false, '<br />');

'editeur' is iframe :

<iframe id="editeur" src="contenu_editeur_wysiwyg.php">
</iframe>

contenu_editeur_wysiwyg.php :

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<div>
</div>
</body>
</html>

don't forget :

document.getElementById('editeur').contentDocument.designMode = "on";

In most browsers, you can use the insertNode() method of the Range you obtain from the selection. In IE < 9 you can use pasteHTML(), as you mentioned. Below is a function to do this in all major browsers. If content is already selected, it is replaced, so this is effectively a paste operation. Also, I added code to place the caret after the end of the inserted content.

jsFiddle: http://jsfiddle.net/jwvha/1/

Code:

function pasteHtmlAtCaret(html) {
    var sel, range;
    if (window.getSelection) {
        // IE9 and non-IE
        sel = window.getSelection();
        if (sel.getRangeAt && sel.rangeCount) {
            range = sel.getRangeAt(0);
            range.deleteContents();

            // Range.createContextualFragment() would be useful here but is
            // only relatively recently standardized and is not supported in
            // some browsers (IE9, for one)
            var el = document.createElement("div");
            el.innerHTML = html;
            var frag = document.createDocumentFragment(), node, lastNode;
            while ( (node = el.firstChild) ) {
                lastNode = frag.appendChild(node);
            }
            range.insertNode(frag);

            // Preserve the selection
            if (lastNode) {
                range = range.cloneRange();
                range.setStartAfter(lastNode);
                range.collapse(true);
                sel.removeAllRanges();
                sel.addRange(range);
            }
        }
    } else if (document.selection && document.selection.type != "Control") {
        // IE < 9
        document.selection.createRange().pasteHTML(html);
    }
}

UPDATE 21 AUGUST 2013

As requested in the comments, here is an updated example with an extra parameter that specifies whether or not to select the inserted content.

Demo: http://jsfiddle.net/timdown/jwvha/527/

Code:

function pasteHtmlAtCaret(html, selectPastedContent) {
    var sel, range;
    if (window.getSelection) {
        // IE9 and non-IE
        sel = window.getSelection();
        if (sel.getRangeAt && sel.rangeCount) {
            range = sel.getRangeAt(0);
            range.deleteContents();

            // Range.createContextualFragment() would be useful here but is
            // only relatively recently standardized and is not supported in
            // some browsers (IE9, for one)
            var el = document.createElement("div");
            el.innerHTML = html;
            var frag = document.createDocumentFragment(), node, lastNode;
            while ( (node = el.firstChild) ) {
                lastNode = frag.appendChild(node);
            }
            var firstNode = frag.firstChild;
            range.insertNode(frag);

            // Preserve the selection
            if (lastNode) {
                range = range.cloneRange();
                range.setStartAfter(lastNode);
                if (selectPastedContent) {
                    range.setStartBefore(firstNode);
                } else {
                    range.collapse(true);
                }
                sel.removeAllRanges();
                sel.addRange(range);
            }
        }
    } else if ( (sel = document.selection) && sel.type != "Control") {
        // IE < 9
        var originalRange = sel.createRange();
        originalRange.collapse(true);
        sel.createRange().pasteHTML(html);
        if (selectPastedContent) {
            range = sel.createRange();
            range.setEndPoint("StartToStart", originalRange);
            range.select();
        }
    }
}


var doc = document.getElementById("your_iframe").contentWindow.document;

// IE <= 10
if (document.selection){
    var range = doc.selection.createRange();
        range.pasteHTML("<b>Some bold text</b>");

// IE 11 && Firefox, Opera .....
}else if(document.getSelection){
    var range = doc.getSelection().getRangeAt(0);
    var nnode = doc.createElement("b");
    range.surroundContents(nnode);
    nnode.innerHTML = "Some bold text";
};

Tags:

Javascript

Jquery

Contenteditable

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