巧用expression区分只读文本框和普通文_css

　　对于文本框,只读状态下和普通状态下,浏览器对其并没有做什么特殊的标记,表面看来,效果是一样的,这样,对用户来说,易用性并不是很高.

　　当然,我们可以改变只读文本框的背景颜色来加以区分,这个时候就需要程序员自己判断这个文本框是不是只读,然后再引入相应的css,无疑加大了工作量.

　　这里,使用expression来提供一种解决方案,只需要每个页面引入这个css即可,其它的都由程序自己判断,如下:

<style>input{background-color:expression((this.readOnly && this.readOnly==true)?”#cccccc”:””)}</style><INPUT TYPE=”text” NAME=””><INPUT TYPE=”text” NAME=”” readonly><INPUT TYPE=”text” NAME=””><INPUT TYPE=”text” NAME=”” readonly>[/code]</p> <p><input style="CURSOR: hand" onfocus=this.blur() type=button value=运行代码>  <input style="WIDTH: 95px; CURSOR: hand" onfocus=this.blur() onclick=cycode(code5) type=button value=复制到剪贴板 name=Submit>  <input style="CURSOR: hand" onfocus=this.blur() onclick=svcode(code5) type=button value=另存代码> [Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]</p> <p>欢迎大家阅读<span style='color:red;'>《巧用expression区分只读文本框和普通文…_css》</span>,跪求各位点评,若觉得好的话请收藏本文，by <strong>搞代码</strong></p> <hr /><div class="open-message">搞代码网（<a href="www.gaodaima.com" target="_blank" title="gaodaima.com">gaodaima.com</a>）提供的所有资源部分来自互联网，如果有侵犯您的版权或其他权益，请说明详细缘由并提供版权或权益证明然后发送到邮箱<a>chengxuyuan@gaodaima.com‍</a>，我们会在看到邮件的第一时间内为您处理，或直接联系<a>QQ：872152909</a>。本网站采用<a 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