border-top-color Attribute | borderTopColor参数属性

Sets or retrieves the color of the top border of the object.

dhtml语法

HTML { border-top-color : sColor }
Scripting object.style.borderTopColor [ = sColor ]

DHTML可能的值

sColor Variant that specifies or receives one of the color names or RGB values in the Color Table.
The property is read/write for all objects except the following, for which it is read-only: currentStyle. The property has no default value. The Cascading Style Sheets (CSS) attribute is not inherited.
Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5. For more information, see about dynamic properties.

remarks

as of microsoft® internet explorer 5.5, this property applies to inline elements. with earlier versions of internet explorer, inline elements must have an absolute?a href="../properties/position.html">position or layout to use this property. element layout is set by providing a value for the height property or the width property.
some browsers do not recognize color names, but all browsers should recognize rgb color values and display them correctly.

Examples

The following examples use the border-top-color attribute and the borderTopColor property to specify the color of the top border.
This example uses a call to an embedded (global) style sheet to change the color of the top border to blue when an onmouseover event occurs.
<HEAD>
<STYLE>
TD { border-top-color: red;
border-width: 0.5cm; border-style: groove }
.blue { border-top-color: blue }
</STYLE>
</HEAD>
<BODY>
<TABLE BORDER>
<TR>
<TD onmouseover="this.className='blue'"
onmouseout="this.className=''">
</TD>
</TR>
</TABLE>
This feature requires Microsoft® Internet Explorer 4.0 or later. Click the following icon to install the latest version. Then reload this page to view the sample.
This example uses inline scripting to change the color of the top border to blue when an onmouseover event occurs.
<TD onmouseover="this.style.borderWidth='0.5cm';
this.style.borderTopColor='blue'">
This feature requires Microsoft® Internet Explorer 4.0 or later. Click the following icon to install the latest version. Then reload this page to view the sample.

是否符合公共标准

This property is defined in Cascading Style Sheets (CSS), Level 2 (CSS2) .

Applies To

A, ACRONYM, B, BDO, BIG, BLOCKQUOTE, BODY, BUTTON, CAPTION, CENTER, CITE, CODE, currentStyle, CUSTOM, DD, defaults, DEL, DFN, DIR, DIV, DL, DT, EM, EMBED, FIELDSET, FONT, FORM, FRAME, hn, HR, I, IFRAME, IMG, INPUT type=button, INPUT type=checkbox, INPUT type=file, INPUT type=image, INPUT type=password, INPUT type=radio, INPUT type=reset, INPUT type=submit, INPUT type=text, INS, ISINDEX, KBD, LABEL, LI, LISTING, MARQUEE, MENU, NOBR, OBJECT, OL, P, PLAINTEXT, PRE, Q, runtimeStyle, S, SAMP, SMALL, SPAN, STRIKE, STRONG, style, SUB, SUP, TABLE, TD, TEXTAREA, TH, TT, U, UL, VAR, XMP

更多语法参考

border