Css 简明教程
CSS - Unicode-bidi Property
CSS unicode-bidi 属性用于控制在文档中显示双向文本的方式。双向文本包含从左到右 (LTR) 和从右到左 (RTL) 的文本。
unicode-bidi 属性允许开发者覆盖浏览器的默认行为并确保双向文本正常显示。
Possible Values
-
normal − 这是默认值,它指定应根据文本本身的固有方向显示文本。换句话说,它将使用文本中字符的方向来确定应如何显示文本。
-
embed − 此值用于显式设置元素中文本的方向。将 unicode-bidi 设置为 embed 时,还可以使用 direction 属性指定文本应从左到右 ( ltr ) 或从右到左 ( rtl ) 显示。
-
bidi-override − 此值将创建行内元素的覆盖。对于块元素,它将覆盖浏览器的双向文本算法,并严格按照 direction 属性在任何行内子元素内对文本进行流。
-
isolate −此值将元素与其兄弟元素隔离开。
-
isolate-override −此值使用关键词 isolate 隔离行为周围内容,使用关键词bidi-override覆盖行为内部内容。
-
plaintext −防止双向文本(BIDI)算法影响元素内的文本。
DOM Syntax
object.style.unicodeBidi = "normal|embed|bidi-override|isolate|isolate-override|plaintext";
CSS unicode-bidi - normal Value
以下示例演示如何使用 unicode-bidi: normal ,文本按从右到左方向(RTL)的默认顺序显示−
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: normal;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - normal Value</h2>
<p>The following text is displayed in its default order from right-to-left direction.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>
CSS unicode-bidi - embed Value
以下示例演示如何使用 unicode-bidi: embed ,此值嵌入其周围内容中文本的方向,而当 direction 设置为 rtl 时,文本将以从右到左(RTL)方向显示−
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: embed;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - embed Value</h2>
<p>The following text is displayed in its default order from right-to-left direction.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>
CSS unicode-bidi - bidi-override Value
以下示例演示如何使用 unicode-bidi: bidi-override ,此值以相反的顺序显示文本,最右边的字符显示在第一个位置。−
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: bidi-override;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - bidi-override Value</h2>
<p>The following text is displayed in reverse order of the characters in right-to-left direction.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>
CSS unicode-bidi - isolate Value
以下示例演示如何使用 unicode-bidi: isolate ,此值用于将双向文本与其周围文本隔离开。−
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: isolate;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - isolate Value</h2>
<p>The following text is displayed in its default order from right to left.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>
CSS unicode-bidi - isolate-override Value
以下示例演示如何使用 unicode-bidi: isolate-override ,此值用于将双向文本与其周围文本隔离开并覆盖−
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: isolate-override;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - isolate-override Value</h2>
<p>The following text is displayed in reverse order of the characters in right-to-left direction.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>
CSS unicode-bidi - plaintext Value
以下示例演示如何使用 unicode-bidi: plaintext ,此值将文本视为纯文本,不应用任何双向文本算法。
<html>
<head>
<style>
.box {
direction: rtl;
unicode-bidi: plaintext;
color:red;
}
</style>
</head>
<body>
<h2>CSS unicode-bidi - plaintext Value</h2>
<p>The following text is displayed in its default order from left-to-right direction.</p>
<div class="box">
Lorem Ipsum is simply dummy text of the printing and typesetting industry.
</div>
</body>
</html>