我有一张表格，其中一列包含十进制数字。我希望以类似于文字处理器的“十进制制表符”功能的方式对齐它们，以便所有点都位于一条垂直线上。
我目前有两种可能的解决方案，但我希望有更好的解决方案…
解决方案1：在HTML中拆分数字，例如
<td><div>1234</div><div class='dp'>.5</div></td>
与
.dp { width: 3em; }
（是的，此解决方案不能完全按原样工作。但是，此概念是有效的。）
解决方案2：我发现提到
<col align="char" char=".">
根据参考页，这是HTML4的一部分，但是在我必须使用的浏览器FF3.5，Safari 4或IE7中却无法使用。它还存在无法将数字格式提取到CSS的问题（尽管由于它影响到整个列，所以我认为这并不奇怪）。
因此，有谁有更好的主意？
请参阅Krijn Hoetmer的这篇文章，了解您的选择以及如何实现这一点。该解决方案的实质是使用CSS和JS实现此目的：
(function() { var currencies = /(\$|€|€)/; var leftWidth = 0, rightWidth = 0; for(var tableCounter = 0, tables = document.getElementsByTagName("table"); tableCounter < tables.length; tableCounter++) { if(tables[tableCounter].className.indexOf("fix-align-char") != -1) { var fCols = [], leftPart, rightPart, parts; for(var i = 0, cols = tables[tableCounter].getElementsByTagName("col"); i < cols.length; i++) { if(cols[i].getAttribute("char")) { fCols[i] = cols[i].getAttribute("char"); } } for(var i = 0, trs = tables[tableCounter].rows; i < trs.length; i++) { for(var j = 0, tds = trs[i].getElementsByTagName("td"); j < tds.length; j++) { if(fCols[j]) { if(tds[j].innerHTML.indexOf(fCols[j]) != -1) { parts = tds[j].innerHTML.split(fCols[j]); leftPart = parts.slice(0, parts.length -1).join(fCols[j]); leftPart = leftPart.replace(currencies, "<span class='currency'>$1</span>"); rightPart = fCols[j] + parts.pop(); tds[j].innerHTML = "<span class='left'>" + leftPart + "</span><span class='right'>" + rightPart + "</span>"; } else { tds[j].innerHTML = tds[j].innerHTML.replace(currencies, "<span class='currency'>$1</span>"); tds[j].innerHTML = "<span class='left'>" + tds[j].innerHTML + "</span>"; } tds[j].className = "char-align"; var txt = document.createTextNode(tds[j].firstChild.offsetWidth); if(leftWidth < tds[j].firstChild.offsetWidth) { leftWidth = tds[j].firstChild.offsetWidth; } if(tds[j].childNodes[1]) { txt = document.createTextNode(tds[j].childNodes[1].offsetWidth); if(rightWidth < tds[j].childNodes[1].offsetWidth) { rightWidth = tds[j].childNodes[1].offsetWidth; } } } } } } } // This is ugly and should be improved (amongst other parts of the code ;) var styleText = "\n" + "<style type='text/css'>\n" + " .fix-align-char td.char-align { width: " + (leftWidth + rightWidth) + "px; }\n" + " .fix-align-char span.left { float: left; text-align: right; width: " + leftWidth + "px; }\n" + " .fix-align-char span.currency { text-align: left; float: left; }\n" + " .fix-align-char span.right { float: right; text-align: left; width: " + rightWidth + "px; }\n" + "</style>\n"; document.body.innerHTML += styleText; })(); table { border-collapse: collapse; width: 600px; } th { padding: .5em; background: #eee; text-align: left; } td { padding: .5em; } #only-css td.char-align { width: 7em; } #only-css span.left { float: left; width: 4em; text-align: right; } #only-css span.currency { float: left; width: 2em; text-align: left; } #only-css span.right { float: right; width: 3em; text-align: left; } <table id="only-css"> <thead> <tr> <th>Number</th> <th>Description</th> <th>Costs</th> </tr> </thead> <tbody> <tr> <td>1</td> <td>Lorem ipsum dolor sit amet</td> <td class="char-align"> <span class="left"> <span class="currency">$</span>3 </span> <span class="right">,99</span> </td> </tr> <tr> <td>2</td> <td>Consectetuer adipiscing elit</td> <td class="char-align"> <span class="left"> <span class="currency">$</span>13 </span> <span class="right">,95</span> </td> </tr> <tr> <td>3</td> <td>Pellentesque fringilla nisl ac mi</td> <td class="char-align"> <span class="left"> <span class="currency">$</span>4 </span> <span class="right"></span> </td> </tr> <tr> <td>4</td> <td>Aenean egestas gravida magna</td> <td class="char-align"> <span class="left"> <span class="currency">$</span>123 </span> <span class="right">,999</span> </td> </tr> </tbody> </table>
