如何动态禁用html< select>在JSTL中? [英] How to dynamically disable html <select> in JSTL?

问题描述

我尝试使用

<select id="_${sec_field}_id" name="${sec_field}" multiple="${multiple}" "${(empty disabled) ? 'disabled' : ' '}" >

要动态启用/禁用<select>选项

但是Eclipse给了我警报:

But Eclipse give me the alerts:

Multiple annotations found at this line:
- Element type "select" must be followed by either attribute specifications, ">" or "/>".
- Attribute """ has no value

那么有什么解决方案可以解决JSTL中禁用html <select>的问题吗?

So is there any solution that we can work out the disable of html <select> in JSTL?

谢谢.

推荐答案

删除显示出disabled属性名称的EL表达式周围的双引号.只能在属性 value 周围(=之后的部分)放置双引号.

Remove those doublequotes around the EL expression which prints the disabled attribute name. Doublequotes should be placed around the attribute value only (the part after =).

<select ... ${empty disabled ? 'disabled' : ''}>

否则，您最终会得到

<select ... "">

或

<select ... "disabled">

在语法上是错误的.

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