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語法:

flex-direction:row | row-reverse | column | column-reverse

默認(rèn)值row

適用于:flex容器

繼承性:無

動畫性:否

計算值:指定值

取值:

  • row:主軸與行內(nèi)軸方向作為默認(rèn)的書寫模式。即橫向從左到右排列(左對齊)。

  • row-reverse:對齊方式與row相反。

  • column:主軸與塊軸方向作為默認(rèn)的書寫模式。即縱向從上往下排列(頂對齊)。

  • column-reverse:對齊方式與column相反。

說明:

該屬性通過定義flex容器的主軸方向來決定felx子項在flex容器中的位置。這將決定flex需要如何進(jìn)行排列
  • 該屬性的反轉(zhuǎn)取值不影響元素的繪制,語音和導(dǎo)航順序,只改變流動方向。這與 <' writing-mode '> 和 <' direction '> 相同。

  • 示例:將一個容器內(nèi)的子元素反轉(zhuǎn)橫向排列

    Code:

    <ul id="flex"> <li>a</li> <li>b</li> <li>c</li> </ul> #box { display: flex; flex-direction: row-reverse; list-style: none; }

    請自行根據(jù)需要補全廠商前綴。flex生效需定義 <' display '> 為flex或inline-flex(box或inline-box,這是舊的方式)

    • a

    • b

    • c

  • 對應(yīng)的腳本特性為flexDirection。

兼容性:

ValuesIEFirefoxChromeSafariOperaiOS SafariAndroid BrowserAndroid Chrome
Basic Support6.0-10.02.0-21.04.0-20.06.015.0+-webkit-6.0-6.12.1-4.318.0-19.0
11.0+22.0+21.0+-webkit-6.1+-webkit-17.0+7.0+-webkit-4.4+20.0+-webkit-
29.0+9.0+9.0+28.0+

示例:

實例

<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="utf-8" />
<title>flex-direction_CSS參考手冊_web前端開發(fā)參考手冊系列</title>
<meta name="author" content="Joy Du(飄零霧雨), dooyoe@gmail.com, www.doyoe.com" />
<style>
h1{font:bold 20px/1.5 georgia,simsun,sans-serif;}
.box{
	display:-webkit-flex;
	display:flex;
	margin:0;padding:10px;list-style:none;background-color:#eee;}
.box li{width:100px;height:100px;border:1px solid #aaa;text-align:center;}
#box{
	-webkit-flex-direction:row;
	flex-direction:row;
}
#box2{
	-webkit-flex-direction:row-reverse;
	flex-direction:row-reverse;
}
#box3{
	height:500px;
	-webkit-flex-direction:column;
	flex-direction:column;
}
#box4{
	height:500px;
	-webkit-flex-direction:column-reverse;
	flex-direction:column-reverse;
}
</style>
</head>
<body>
<h1>flex-direction示例:</h1>
<h2>flex-direction:row</h2>
<ul id="box" class="box">
	<li>a</li>
	<li>b</li>
	<li>c</li>
</ul>
<h2>flex-direction:row-reverse</h2>
<ul id="box2" class="box">
	<li>a</li>
	<li>b</li>
	<li>c</li>
</ul>
<h2>flex-direction:column</h2>
<ul id="box3" class="box">
	<li>a</li>
	<li>b</li>
	<li>c</li>
</ul>
<h2>flex-direction:column-reverse</h2>
<ul id="box4" class="box">
	<li>a</li>
	<li>b</li>
	<li>c</li>
</ul>
</body>
</html>
		

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