我有一个包含两列的基本表:名称和值。我想根据值的大小为表中的每一行加上适当的宽度百分比(基本上创建一个横向直方图!)。我可以编写代码来计算要设置的适当百分比,但我无法弄清楚CSS是否能够适当地对每一行进行着色。似乎整行可以加阴影,但不是百分比。这是真的吗?
对于它的价值,我正在使用Twitter Bootstrap,如果需要我也可以使用jQuery。这只能在Chrome上运行,因此CSS3& Webkit只是没问题!这是HTML:
<table class="table">
<tbody class="lead">
<tr>
<td>
Joe
</td>
<td>
10
</td>
</tr>
<tr>
<td>
Jane
</td>
<td>
20
</td>
</tr>
<tr>
<td>
Jim
</td>
<td>
2
</td>
</tr>
</tbody>
</table>
有关如何实现这一目标的任何提示?希望这个问题有道理。
答案 0 :(得分:23)
您可以使用线性渐变。
如果百分比是40%:
table{
background: -webkit-gradient(linear, left top, right top, color-stop(40%,#F00), color-stop(40%,#00F));
background: -moz-linear-gradient(left center, #F00 40%, #00F 40%);
background: -o-linear-gradient(left, #F00 40%, #00F 40%);
background: linear-gradient(to right, #F00 40%, #00F 40%);
}
所以,在JavaScript中,
var percentage=40,
col1="#F00",
col2="#00F";
var t=document.getElementById('table');
t.style.background = "-webkit-gradient(linear, left top,right top, color-stop("+percentage+"%,"+col1+"), color-stop("+percentage+"%,"+col2+"))";
t.style.background = "-moz-linear-gradient(left center,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)";
t.style.background = "-o-linear-gradient(left,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)";
t.style.background = "linear-gradient(to right,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)";
如果您想以不同方式将其应用于每一行:
var col1="#F00",
col2="#00F";
var els=document.getElementById('table').getElementsByTagName('tr');
for (var i=0; i<els.length; i++) {
var percentage = Number(els[i].getElementsByTagName('td')[1].firstChild.nodeValue);
els[i].style.background = "-webkit-gradient(linear, left top,right top, color-stop("+percentage+"%,"+col1+"), color-stop("+percentage+"%,"+col2+"))";
els[i].style.background = "-moz-linear-gradient(left center,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)" ;
els[i].style.background = "-o-linear-gradient(left,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)";
els[i].style.background = "linear-gradient(to right,"+col1+" "+percentage+"%, "+col2+" "+percentage+"%)" ;
}
问题是将背景设置为tr
在Firefox和Opera上运行良好,但在Chrome上,渐变应用于每个单元格。
添加此代码可以解决此问题(请参阅https://stackoverflow.com/a/10515894):
#table td {display: inline-block;}
答案 1 :(得分:11)
无需使用渐变色。首先,使用要为行着色的颜色创建一个简单的图像文件。就我而言,我创建了一个.png
,它是全黑色的(下面示例中为black.png
)。现在,只需使用background-image
和background-size
属性为行的相应部分着色。
示例,HTML:
<table cellspacing = "0px">
<tr class = "row"><td>Hello Hello</td><td>Bye Bye</td></tr>
</table>
CSS:
.row {
background-color: white; /*fallback color*/
background-image: url(black.png);
background-size: 75% 100%; /*your percentage is the first one (width), second one (100%) is for height*/
background-repeat: no-repeat;
color: rgb(0, 140, 200);
font-weight: bold;
}
结果:
以下是一个关于如何为您的示例自动执行此操作的简单代码:
var tbl = document.getElementsByClassName("table")[0];
var rws = tbl.rows;
for(var i = 0; i < rws.length; i ++) {
var percentage = parseInt(rws[i].getElementsByTagName("td")[1].innerHTML, 10);
rws[i].style.backgroundImage = "black.png";
rws[i].style.backgroundSize = percentage + "%" + " 100%";
rws[i].style.backgroundRepeat = "no-repeat";
rws[i].style.color = "rgb(0, 140, 200)";
}
小演示:percentage width bg color (non-gradient based)。
我希望有所帮助!