Html 当标签具有固定宽度时，如何在标签开始前显示星号
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how to show asterisk sign before label start when label has fixed width
提问by Prasad
I want to show asterisk sign before my label indicating it is a mandatory field. following is my css id code for label,
我想在我的标签前显示星号，表明它是必填字段。以下是我的标签 css id 代码，
#label{
float: left;
height: 30px;
padding-right: 4px;
padding-top: 2px;
position: relative;
text-align: right;
vertical-align: middle;
width: 73px;
}
output of above is, * Label but I want it to be like, *Label Thanks
上面的输出是，* 标签，但我希望它像，*标签谢谢
回答by Sowmya
Use :before pseudo class
使用 :before 伪类
.label:before{
content:"*" ;
color:red
}
Or
或者
#req:before{
content:"*" ;
color:red
}
?
回答by Pratap A.K
回答by Steve Benner
Without seeing the HTML it is difficult for us to know what is going on. I suspect you will be able to solve your problem using the little-known white-spaceproperty, if the asterisk is in the same element as #label. Try using white-space: pre.
如果没有看到 HTML，我们很难知道发生了什么。white-space如果星号与#label 位于同一元素中，我怀疑您将能够使用鲜为人知的属性解决您的问题。尝试使用white-space: pre.
Here is some more info: http://www.w3schools.com/cssref/pr_text_white-space.asp
以下是更多信息：http: //www.w3schools.com/cssref/pr_text_white-space.asp
