72 lines
2.1 KiB
Markdown
72 lines
2.1 KiB
Markdown
---
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title: 条件注释判断浏览器
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id: '38'
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categories:
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- 分享
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tags:
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- 判断浏览器
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- IE
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date: 2016-06-14 10:03:23
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---
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项目
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范例
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说明
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!
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\[if ! IE\]
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_The NOT operator. This is placed immediately in front of the?feature, ?operator, or?subexpression?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。**
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lt
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\[if lt IE 5.5\]
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_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。**
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lte
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\[if lte IE 6\]
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_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。**
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gt
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\[if gt IE 5\]
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_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。**
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gte
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\[if gte IE 7\]
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_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。**
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( )
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\[if !(IE 7)\]
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_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。**
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&
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\[if (gt IE 5)&(lt IE 7)\]
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_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**
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\[if (IE 6)(IE 7)\]
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_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。**
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举个栗子
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```
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<!-- [if IE 7]> 仅IE7可识别 <![endif]-->
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<!--[if lte IE 7]> IE7以及IE7以下版本可识别 <![endif]-->
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<!--[if gte IE 7]> IE7以及IE7以上版本可识别 <![endif]-->
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```
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