The following function will do it. DOM Level 2 Range objects make this easy in most browsers. In IE, you need to insert a marker element after the node you're inserting, move the selection to it and then remove it.
Live example: http://jsfiddle.net/timdown/4N4ZD/
Code:
function insertNodeAtCaret(node) {
if (typeof window.getSelection != "undefined") {
var sel = window.getSelection();
if (sel.rangeCount) {
var range = sel.getRangeAt(0);
range.collapse(false);
range.insertNode(node);
range = range.cloneRange();
range.selectNodeContents(node);
range.collapse(false);
sel.removeAllRanges();
sel.addRange(range);
}
} else if (typeof document.selection != "undefined" && document.selection.type != "Control") {
var html = (node.nodeType == 1) ? node.outerHTML : node.data;
var id = "marker_" + ("" + Math.random()).slice(2);
html += '<span id="' + id + '"></span>';
var textRange = document.selection.createRange();
textRange.collapse(false);
textRange.pasteHTML(html);
var markerSpan = document.getElementById(id);
textRange.moveToElementText(markerSpan);
textRange.select();
markerSpan.parentNode.removeChild(markerSpan);
}
}
Alternatively, you could use my Rangy library. The equivalent code there would be
function insertNodeAtCaret(node) {
var sel = rangy.getSelection();
if (sel.rangeCount) {
var range = sel.getRangeAt(0);
range.collapse(false);
range.insertNode(node);
range.collapseAfter(node);
sel.setSingleRange(range);
}
}
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