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HomeWeb Front-endHTML Tutorialfile类型的上传按钮美化样式_html/css_WEB-ITnose

首先我们先要了解一下各浏览器的浏览按钮的共同特性:

    1、都可以设置整体的宽度和高度,但在IE、火狐、Opera中设置宽度不影响浏览按钮的宽度;

    2、谷歌中只要是input的区域单击可弹出窗口;IE(IE6中没试)中,单击浏览按钮可以弹出窗口,双击文本框区域可以弹出窗口;火狐和Opera中,单击input任何区域都可以弹出窗口;

    3、设置input字体大小,IE、火狐、Opera的流量按钮都变大了(宽与高)。(这点很重要);

从上面的共同特性来看,只要第三条是我们最需要的。

 

现在我们可以开始美化了:

        思路:先用a标签做一个按钮,定好宽度并要加上overflow:hidden;属性,然后将放在a标签里面,通过定位,将input相对于a的右上角对齐,最后将input的透明度设为0即可。

        为何要右上角对齐?

                之所以右上角对齐是因为在IE、火狐、Opera中,鼠标放在文本框上鼠标呈文本状态,还有一个原因是IE中在文本区域中需要双击才能弹出窗口,这也是我利用上面提到的共同特性的第三点的原因。

        示例代码如下:

<style>a{display:inline-block; width:100px; height:40px; background:red; position:relative; overflow:hidden;}a:hover{background:green;}input{position:absolute; right:0; top:0; font-size:100px; opacity:0; filter:alpha(opacity=0);}</style>    <a href="#">    <input type="file" value="浏览" /></a>

  

这样各个浏览器的input浏览按钮的样式就达到了一致的效果,file按钮样式美化搞定。

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