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Front-end learning--html&css--conditional hack and attribute hack

Source: Internet
Author: User
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Condition hack

Grammar:

<!-- [if <keywords>? IE <version>?] >html code block <! [EndIf]  -

<keywords>

The IF Condition contains 6 options: whether, greater than, greater than or equal to, less than, less than or equal to, non-specified version

Whether:
Specifies whether IE or IE is a version. Keywords: empty
Greater than:
Select the IE version that is larger than the specified version. Keywords: gt (greater than)
Greater than or equal to:
Select the IE version that is greater than or equal to the specified version. Keywords: GTE (greater than or equal)
Less than:
Select an IE version that is less than the specified version. Keyword: lt (less than)
Less than or equal to:
Select the IE version that is less than or equal to the specified version. Keywords: LTE (less than or equal)
Non-specified version:
selects all IE versions except the specified version. Keywords: !

<version>

The current version of the commonly used IE is 6.0 and above, it is recommended to ignore the lower version as appropriate, and devote energy to providing a better experience for users who use advanced browsers.

Used to select different versions of IE browser and IE

    • If condition hack is HTML level (contains but not only CSS hack, can choose any HTML code block)
<!-- [If ie]><p> you will not see my figure in non-IE </p><! [EndIf]  -

Sample Demo:

<!DOCTYPE HTML><HTMLLang= "ZH-CN"><Head><MetaCharSet= "Utf-8" /><title>If condition HACK_CSS reference manual _web front-end Development Reference manual series</title><style>H1{margin:10px 0;font-size:16px;}span{Display:None;}. Not-ie{Display:inline;}</style><!--[if Ie]><style>.ie{display:inline;}. Not-ie{display:none;} </style><! [EndIf] -<!--[If IE 5]><style>.ie5{display:inline;} </style><! [EndIf] -<!--[If IE 6]><style>.ie6{display:inline;} </style><! [EndIf] -<!--[If IE 7]><style>.ie7{display:inline;} </style><! [EndIf] -<!--[If IE 8]><style>.ie8{display:inline;} </style><! [EndIf] -<!--[If IE 9]><style>.ie9{display:inline;} </style><! [EndIf] -</Head><Body><Div>you are using<spanclass= "Not-ie">Non-IE</span>    <spanclass= "ie">Ie</span>    <spanclass= "IE5">5</span>    <spanclass= "IE6">6</span>    <spanclass= "IE7">7</span>    <spanclass= "IE8">8</span>    <spanclass= "IE9">9</span>Browser</Div></Body></HTML>

CSS Properties HACK

Grammar:

selector{<hack>property:value<hack>?;}
_：
Select IE6 and below. The Connector (middle dash) (-) can also be used, in order to avoid confusion with some of the underlined properties, it is more appropriate to use an underscore (_).
*：
Select IE7 and below. such as: (+) and (#) can be used, but the industry to (*) the recognition of higher
\9:
Select ie6+
:
Choose ie8+ and Opera
[;p Roperty:value;]; ：
Select WebKit Core Browser (Chrome,safari). IE7 and below can also be identified. 3 semicolons inside and outside the brackets must be preserved, before the first semicolon can be any rule or any number of rules
[; color: #f00;]; with [color: #f00; color: #f00;]; and [Margin:0;padding:0;color: #f00;]; is equivalent. The last rule in brackets is always in effect, so the first one is usually the simplest to use.

Choose a different browser and version

    • Minimize the use of CSS hack. hack are risky, use caution
    • The default operating environment for all code and examples in this document is Standard mode, as is often not specifically stated.

    • Some CSS hack because of the cross-understanding of the browser, it is necessary to use layer-by-layer overlay to achieve the hack of different browsers.

Example:

<!DOCTYPE HTML><HTMLLang= "ZH-CN"><Head><MetaCharSet= "Utf-8" /><title></title><style>H1{margin:10px 0;font-size:16px;}. Test{Color:#c30;          /*For Firefox*/[; color:#ddd;]; /*For WebKit (Chrome and Safari)*/Color:#090;        /*For Opera*/Color:#00f \9;        /*For ie8+*/*color:#f00;         /*For IE7*/_color:#ff0;         /*For IE6*/}</style></Head><Body><Divclass= "Test">Look at my colors under a different browser.</Div></Body></HTML>

Front-end learning--html&css--conditional hack and attribute hack

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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