使用HTML + CSS显示输入范围 [英] Display span over input with HTML+CSS

问题描述

我想用CSS在输入元素上显示一个span元素。我怎样才能做到这一点。我当前的代码：

 <输入类型= url占位符=例如www.google.com /> 
< span> http：//< / span> 
  

如何在输入元素上显示span元素，以便用户知道不需要输入http：//，这样看起来就好像已经有一个值了，但是那是输入中的span元素吗？我认为我可以通过CSS定位来做到这一点。

我不能使用占位符，因为我不想将其删除。

  .wrapper {位置：相对；}输入{padding-left：48px；}。wrapper span {位置：绝对；左：2px;}  

 < div class = wrapper > <输入type = url占位符=例如www.google.com /> < span> http：//< / span> < / div>  

$ p
$ b

示例

I want to display a span element over an input element with CSS. How can I do this. My current code:

<input type="url" placeholder="e.g. www.google.com" />
<span>http://</span>

How can I display the span element on the input element so that the users know there is no need to enter http:// so it would look like if there's already a value in but then it is the span element on the input? I assume I can do that with CSS positioning.

I cannot use placeholder as I don't want it to be removed.

解决方案

As you have mentioned you need to use positioning and wrap your input with span into div or some other element.

.wrapper {
    position: relative;
}

input {
    padding-left: 48px;
}

.wrapper span {
    position: absolute;
    left: 2px;
}

<div class="wrapper">
    <input type="url" placeholder="e.g. www.google.com" />
    <span>http://</span>    
</div>

Example

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