height Attribute | height参数属性

Sets or retrieves the height of the object.

dhtml语法

HTML	{ height : sHeight }
Scripting	object.style.height [ = sHeight ]

DHTML可能的值

sHeight

Variant that specifies or receives one of the following values. auto Default. ?/TD> height Floating-point number followed by an absolute units designator (cm, mm, in, pt, pc, or px) or a relative units designator (em or ex). For more information about the supported length units, see css length units reference. percentage Integer followed by a percent sign (%). The value is a percentage of the height of the parent object, which must be specified explicitly. Negative values are not allowed.

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 auto. 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

if you specify the height property of an img object but not the width property, the width is proportional to the height according to the dimensions of the image source file.

  As of Internet Explorer 6, when you use the !DOCTYPE declaration to specify standards-compliant mode, this property specifies the distance between the top and bottom edges of the content box—that is, within the padding.

When the !DOCTYPE declaration does not specify standards-compliant mode, and with earler versions of Internet Explorer, this property includes the object's content box, plus the values of the following properties: borderTop, borderBottom, paddingTop, and paddingbottom. subtracting the sum of the values of these properties from the value of the height property equals the height of the parent object's content box.

to perform operations on the numeric value of this property, use pixelheight or posheight.

Examples

This example uses an inline style sheet to set the height of an image to 4 centimeters.

<IMG SRC="sphere.jpg" STYLE="height:4cm">

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 height of an image when an onclick event occurs.

<button onclick="height1.style.height='1cm'">shrink sphere</button>

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, ACRONYM, ADDRESS, APPLET, B, BDO, BIG, BLOCKQUOTE, BUTTON, CAPTION, CENTER, CITE, CODE, currentStyle, CUSTOM, DD, DEL, DFN, DIR, DIV, DL, DT, EM, EMBED, FIELDSET, FONT, FORM, FRAME, FRAMESET, 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, KBD, LABEL, LEGEND, LI, LISTING, MARQUEE, MENU, NOBR, OBJECT, OL, OPTION, P, PLAINTEXT, PRE, Q, RT, RUBY, runtimeStyle, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, style, SUB, SUP, TABLE, TD, TEXTAREA, TH, TR, TT, U, UL, VAR, XMP

更多语法参考

css enhancements in internet explorer 6, Measuring Element Dimension and Location