在contenteditable div中设置插入位置

Question

简介

编辑可信DOM对象的内容时，不同的浏览器会有不同的行为。例如，Firefox 18.0在某些情况下会创建新段落（<p>）或换行符<br/>，而Chrome 24会创建<div>。

为了解决这个问题，我正在听DOMNodeInserted事件并用p标签替换新插入的节点。

---

问题

问题是将插入符号放在适当的位置。 我已经阅读了大量关于同一主题的帖子，但提供的答案都没有效果，至少在Chrome 24中是这样。

---

代码

JSFiddle

obj.addEventListener("DOMNodeInserted", onNodeInsert, false);

function onNodeInsert(e) {
    var range    = document.createRange(),
        sel      = window.getSelection(),
        newNode  = e.target,
        tagName  = newNode.tagName.toLowerCase(),
        lnbrNode = document.createElement('br'),
        pNode    = document.createElement('p');

    if (tagName === 'div' && newNode.getAttribute("id") === null) {
        // First we remove the event listener so that it doesn't get triggered again
        this.removeEventListener('DOMNodeInserted', onNodeInsert, false);

        // Creates a p node and removes the div
        newNode.parentNode.replaceChild(pNode, newNode);
        pNode.appendChild(lnbrNode);

        // Places the caret where it belongs
        range.setStart(pNode, 0);
        sel.removeAllRanges();
        sel.addRange(range);    

        //We can restore the event listener now
        this.addEventListener("DOMNodeInserted", onNodeInsert, false);
    }
}

Answer 1

对于那些可能遇到和我一样的问题的人来说，这是我的肮脏修复......

---

相关代码

JSFiddle

obj.addEventListener("DOMNodeInserted", onNodeInsert, false);

function onNodeInsert(e) {
    var range    = document.createRange(),
        sel      = window.getSelection(),
        newNode  = e.target,
        tagName  = newNode.tagName.toLowerCase(),
        lnbrNode = document.createElement('br'),
        pNode    = document.createElement('p');

    if (tagName === 'div' && newNode.getAttribute("id") === null) {
        // First we remove the event listener so that it doesn't get triggered again
        this.removeEventListener('DOMNodeInserted', onNodeInsert, false);

        // Creates a p node and removes the div
        newNode.parentNode.replaceChild(pNode, newNode);
        pNode.appendChild(lnbrNode);

        // Places the caret where it belongs
        var placeCursor = function () {
            range.setStart(pNode, 0);
            sel.removeAllRanges();
            sel.addRange(range);    
        }

        //placeCursor(); // DOES NOT WORK (cursor disappears)
        setTimeout(placeCursor,1); // WORKS

        //We can restore the event listener now
        this.addEventListener("DOMNodeInserted", onNodeInsert, false);
    }
}