将表格插入内容可编辑的 div

Question

我有一个 fiddle 显示我的代码在做什么。使用 javascript/jquery 我正在尝试将表格插入到当前插入符号位置的内容可编辑 div 中。我正在使用Tim Down's Rangy 库来完成此操作。我正在使用以下 javascript 执行此操作。

var range = getFirstRange();
var el = document.createElement("table");
var tableHtml = "";
for (var a = 0; a <= tableY; a++) {
    if(a%2==0){
       tableHtml += '<tr class="zebra">';
    }
    else{
       tableHtml += '<tr>';
    }
    for (var b = 0; b <= tableX; b++) {
       tableHtml += '<td>&nbsp;</td>';
    }
    tableHtml += '</tr>';   
}
$(el).html(tableHtml); 
range.insertNode(el);
rangy.getSelection().setSingleRange(range);

getFirstRange 函数以防万一。

function getFirstRange() {
   var sel = rangy.getSelection();
   return sel.rangeCount ? sel.getRangeAt(0) : null;
} 

我需要在放置此表的任何位置制作有效的 html。例如，如果插入符号位于链接中间，我会尝试避免使用以下 html。

<p>some text <a href="#">text 
                         <table>
                             <tr>
                               <td>table content</td>
                             </tr>
                         </table> 
              text</a> more text</p> 

我希望它看起来像这样。

<p>some text <a href="#">text</a></p>
<table>
   <tr>
     <td>table content</td>
   </tr>
</table>
<p><a href="#">text</a> more text</p>

Answer 1

如果您想在无法有效包含它的选定节点之后立即删除新节点，请替换为：

range.insertNode(el);

有了类似的东西：

var badNodes = {a: 1, p: 1};

// starting with the node at the beginning of the range,
// iterate to the "left" until we find a node that isn't
// a text node
var n = range.startContainer;
var tag = n.nodeName;
while (tag == '#text') {
    n = n.parentNode;
    tag = n.nodeName;
}

// if the node we landed on isn't one of our bad nodes ...
if (badNodes[tag.toLowerCase()]) {

    // that we refuse to insert 'el' into, continue iterating to the
    // "left" until we find a node we're willing to place 'el' after.
    while (badNodes[n.parentNode.nodeName.toLowerCase()]) {
        n = n.parentNode;
        tag = n.nodeName;
    }
    n.parentNode.insertBefore(el, n.nextSibling);

} else {
    range.insertNode(el);
}

见我的小提琴叉：http://jsfiddle.net/zntwL/29/

---

更新 ^{（我想这就是你想要的）}

如果您想拆分无效节点并将新节点放入，请改用以下内容：

var badNodes = {a: 1, p: 1};

// starting with the node at the beginning of the range,
// iterate to the "left" until we find a node that isn't
// a text node
var n = range.startContainer;
var tag = n.nodeName;
while (tag == '#text') {
    n = n.parentNode;
    tag = n.nodeName;
}

// if the node we landed on is one of our "bad" nodes ...
if (badNodes[tag.toLowerCase()]) {

    // continue iterating to the "left" until we find a "good" node
    while (badNodes[n.parentNode.nodeName.toLowerCase()]) {
        n = n.parentNode;
        tag = n.nodeName;
    }

    // remove everything from our "good" node from the start of the
    // range to the end of the node. this causes all bad nodes to be
    // severed and auto-closed and auto-opened as necessary at the cut.
    range.setEndAfter(n);
    var clipped = range.extractContents();

    // drop 'el' in after the break (right where we want it)
    n.parentNode.insertBefore(el, n.nextSibling);

    // and re-attach the clipped portion of the "good" node, which
    // includes the auto-opened "bad" nodes.
    el.parentNode.insertBefore(clipped, el.nextSibling);

} else {
    range.insertNode(el);
}

http://jsfiddle.net/zntwL/31/

您的最终解决方案可能需要一些调整。您可能需要以不同的方式检测 #text 节点以兼容跨浏览器。您需要将其模块化并适当地填充badNodes 数组。但是，我认为这是一般的想法。

Answer 2

类似的东西呢

var parentNode = range.commonAncestorContainer;
parentNode.inertNode(el);

替换你的

range.insertNode(el);

在所有情况下，您可能必须对其进行调整以使表格准确地位于您想要的位置，但至少它永远不会出现在元素的中间。

Answer 3

作为一名 iPhone 应用程序开发人员，我发现以下内容适用于我的可编辑内容

function TableOfContentForSubHeading1() {
    var level = 0;
    document.getElementById("content").innerHTML =
        document.getElementById("content").innerHTML.replace(/<h([\d])>([^<]+)<\/h([\d])>/gi, function (str, openLevel, titleText, closeLevel) {
            if (openLevel != closeLevel) {
                return str;
            }
            if (openLevel > level) {
                toc += (new Array(openLevel - level + 1)).join("<ol>");
            } else if (openLevel < level) {
                toc += (new Array(level - openLevel + 1)).join("</ol>");
            }
            level = parseInt(openLevel);
            var anchor = titleText.replace(/ /g, "_");
            toc += "<li><a href=\"#" + anchor + "\">" + titleText + "</a></li>";
            return "<h" + openLevel + "><a name=\"" + anchor + "\">" + titleText + "</a></h" + closeLevel + ">";
        });
    if (level) {
        toc += (new Array(level + 1)).join("</ol>");
    }
    document.getElementById("content").innerHTML += toc;
}

希望它有效。

Answer 4

如果标题还包含 CLASS 引用或 ID，我在下面做了一些改进。

<script>
window.onload = function () {
var toc = "";
var level = 0;

document.getElementById("contents").innerHTML =
    document.getElementById("contents").innerHTML.replace(/<h([\d])([^<]+)>([^<]+)<\/h([\d])>/gi,
        function (str, openLevel, classHeading, titleText, closeLevel) {
            if (openLevel != closeLevel) {
                return str;
            }

            if (openLevel > level) {
                toc += (new Array(openLevel - level + 1)).join("<ul>");
            } else if (openLevel < level) {
                toc += (new Array(level - openLevel + 1)).join("</ul>");
            }

            level = parseInt(openLevel);

            var anchor = titleText.replace(/ /g, "_");
            toc += "<li><a href=\"#" + anchor + "\">" + titleText
                + "</a></li>";

            return "<h" + openLevel + classHeading +"><a name=\"" + anchor + "\">"
                + titleText + "</a></h" + closeLevel + ">";
        }
    );

if (level) {
    toc += (new Array(level + 1)).join("</ul>");
}

document.getElementById("toc").innerHTML += toc;
};
</script>

我在替换函数中添加了一个附加参数：

([^<]+)

命名classHeading并将其添加到返回函数中

return "<h" + openLevel + classHeading + ....

这样就保留了用于的类。