条件注释判断浏览器版本

谁践踏了优雅 2022-08-20 05:15 120阅读 0赞

除IE外都可识别

<table style="border:1px solid silver; border-collapse:collapse; word-break:break-word; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; background-color:rgb(40,85,126)"> 
 <tbody> 
 <tr> 
 <th style="border:1px solid silver; border-collapse:collapse; padding:3px"> 项目</th> 
 <th style="border:1px solid silver; border-collapse:collapse; padding:3px"> 范例</th> 
 <th style="border:1px solid silver; border-collapse:collapse; padding:3px">说明</th> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> !</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if !IE]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The NOT operator. This is placed immediately in front of the&nbsp;feature,&nbsp;operator, or&nbsp;subexpression&nbsp;to reverse the Boolean meaning of the expression. NOT运算符。这是摆立即在前面的功能，操作员，或子表达式扭转布尔表达式的意义。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> lt</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if lt IE 5.5]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The less-than operator. Returns true if the first argument is less than the second argument. 小于运算符。如果第一个参数小于第二个参数，则返回true。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> lte</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if lte IE 6]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The less-than or equal operator. Returns true if the first argument is less than or equal to the second argument. 小于或等于运算。如果第一个参数是小于或等于第二个参数，则返回true。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> gt</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if gt IE 5]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The greater-than operator. Returns true if the first argument is greater than the second argument. 大于运算符。如果第一个参数大于第二个参数，则返回true。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> gte</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if gte IE 7]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The greater-than or equal operator. Returns true if the first argument is greater than or equal to the second argument. 大于或等于运算。如果第一个参数是大于或等于第二个参数，则返回true。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> ( )</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if !(IE 7)]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">Subexpression operators. Used in conjunction with boolean operators to create more complex expressions. 子表达式运营商。在与布尔运算符用于创建更复杂的表达式。</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> &amp;</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if (gt IE 5)&amp;(lt IE 7)]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The AND operator. Returns true if all subexpressions evaluate to true AND运算符。如果所有的子表达式计算结果为true，返回true</td> 
 </tr> 
 <tr> 
 <td align="middle" style="border:1px solid silver; border-collapse:collapse; padding:3px"> |</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">[if (IE 6)|(IE 7)]</td> 
 <td style="border:1px solid silver; border-collapse:collapse; padding:3px">The OR operator. Returns true if any of the subexpressions evaluates to true. OR运算符。返回true，如果子表达式计算结果为true。</td> 
 </tr> 
 </tbody> 
</table>

这样有效是有效,但是用HTML VALIDATOR里,报错,因为这个不符合XHTML 1.1的规范, 
如果把ELSE语句去掉,则正确.

方法1：

加载CSS2