hasLayout参数属性

Retrieves a value that indicates whether the object has layout.

dhtml语法

HTML	N/A
Scripting	[ sHasLayout = ] object.currentStyle.hasLayout

DHTML可能的值

sHasLayout

Boolean that receives one of the following values. false Default. Object does not have layout. true Object has layout.

The property is read-only. The property has a default value of false. The Microsoft Cascading Style Sheets (CSS) extension is not inherited.

Remarks

The following table shows Cascading Style Sheets (CSS) properties and corresponding values that, if set, cause an element to have layout.

CSS property	Value
display	inline-block
height	any value
float	left or right
position	absolute
width	any value
writing-mode	tb-rl
zoom	any value

as of microsoft® internet explorer 6, when the !doctype declaration specifies strict standards compliance, inline elements will ignore the width and height properties, and setting the width and height properties will not cause the element to have layout.

setting the contenteditable property to true will cause an element to have layout.

body, img, input, table and td elements always have layout.

DHTML代码范例

The following example shows how to use the hasLayout property to determine whether an object has layout.

<DIV ID="oWidthSet" STYLE="width:100%">
DIV element A has its width set to 100%.</DIV>
<DIV ID="oNotSet">DIV element B is not positioned,
and neither its height nor width is set.</DIV>
<P>Which DIV element has layout?</P>
<BUTTON onclick="alert(oWidthSet.currentStyle.hasLayout)">
DIV Element A</BUTTON>
<BUTTON onclick="alert(oNotSet.currentStyle.hasLayout)">
DIV Element B</BUTTON>

This feature requires Microsoft® Internet Explorer 5.5 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

There is no public standard that applies to this property.

Applies To

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