clear Attribute | clear参数属性

DHTML文档教程

Sets or retrieves whether the object allows floating objects on its left side, right side, or both, so that the next text displays past the floating objects.

dhtml语法

HTML { clear : sClear }
Scripting object.style.clear(v) [ = sClear ]

DHTML可能的值

sClear String that specifies or receives one of the following values.
none Default. Floating objects are allowed on both sides.
left Object is moved below any floating object on the left side.
right Object is moved below any floating object on the right side.
both Object is moved below any floating object.
The property is read/write for all objects except the following, for which it is read-only: currentStyle. The property has a default value of none. 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

the value of this property lists the sides where floating objects are not accepted.

Examples

The following examples use the clear attribute and the clear property to specify placement of text relative to floating objects.
This example uses a call to an embedded (global) style sheet to move the text below the floating objects when italic text is encountered.
<STYLE>
I { clear:left }
</STYLE>
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 changes the position of the paragraph relative to the floating object on its left side.
<HEAD>
<SCRIPT>
function fnClear(){
oClear.style.clear="left";
}
function fnClear2(){
oClear.style.clear="none";
}
</SCRIPT>
</HEAD>
<BODY>
<img src="../common/sphere.jpg" style="float:left">
<SPAN ID="oClear">
<P>This is an example of the clear attribute.<P>
</span>
<P>
<INPUT TYPE=button value="clear = left" onclick="fnClear()">
<INPUT TYPE=button value="clear = none" onclick="fnClear2()">
</P>
</BODY>
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 World Wide Web Consortium (W3C) Document Object Model (DOM) Level 1 and is defined in Cascading Style Sheets (CSS), Level 1 (CSS1) .

Applies To

A, ADDRESS, APPLET, B, BIG, BLOCKQUOTE, BUTTON, CAPTION, CENTER, CITE, CODE, COL, COLGROUP, currentStyle, CUSTOM, DD, defaults, DFN, DIR, DIV, DL, DT, EM, EMBED, FIELDSET, FORM, 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, ISINDEX, KBD, LABEL, LEGEND, LI, LISTING, MARQUEE, MENU, OBJECT, OL, OPTION, P, PLAINTEXT, PRE, runtimeStyle, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, style, SUB, SUP, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TR, TT, U, UL, VAR, XMP