javascript - 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。我正在尝试使用 javascript/jquery 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图书馆来完成这个。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);

以防万一，getFirstRange 函数对这里有帮助。

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

我需要在放置此表的任何地方制作有效的 html。例如，如果插入符号位于链接的中间，我试图避免使用以下 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);

用类似这样的东西:

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);
}

查看我的 fiddle 叉:http://jsfiddle.net/zntwL/29/

---

更新 ^{(我想这就是你想要的)}

如果你想拆分无效节点并放入新节点，请改用这样的东西:

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 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。您可能需要以不同方式检测#text 节点以实现跨浏览器兼容。您需要对其进行模块化并适本地填充 badNodes 数组。但是，我认为这是一般的想法。