目录

style borderTopStyle 属性

示例

向 <div> 元素添加 "solid" 顶部边框:

document.getElementById("myDiv").style.borderTopStyle = "solid";
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描述

borderTopStyle 属性设置或返回元素上边框的样式。


浏览器支持

Property
borderTopStyle Yes Yes Yes Yes Yes

语法

返回 borderTopStyle 属性:

object.style.borderTopStyle

设置 borderTopStyle 属性:

object.style.borderTopStyle = value |initial|inherit

属性值

Value Description
none Defines no border. This is default
hidden Same as "none", except in border conflict resolution for table elements
dotted Defines a dotted border
dashed Defines a dashed border
solid Defines a solid border
double Defines two borders. The width of the two borders are the same as the border-width value
groove Defines a 3D grooved border. The effect depends on the border-color value
ridge Defines a 3D ridged border. The effect depends on the border-color value
inset Defines a 3D inset border. The effect depends on the border-color value
outset Defines a 3D outset border. The effect depends on the border-color value
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit


技术细节

默认值: 没有任何
返回值: 一个 String,表示元素上边框的样式
CSS版本 CSS1

更多示例

示例

将 <div> 元素的上边框样式更改为 "dotted":

document.getElementById("myDiv").style.borderTopStyle = "dotted";
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示例

返回 <div> 元素的顶部边框样式:

alert(document.getElementById("myDiv").style.borderTopStyle);
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示例

所有不同值的演示:

var listValue = selectTag.options[selectTag.selectedIndex].text;
document.getElementById("myDiv").style.borderTopStyle = listValue;
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相关页面

CSS教程:CSS 边框

CSS 参考:border-top 样式属性

HTML DOM 参考:边境属性