Sets or retrieves the top coordinate of the rectangle surrounding the object content.
dhtml语法
TextRectangle.top [ = iCoord ]
DHTML可能的值
| iCoord | Integer that
specifies or receives the top coordinate of the rectangle, in pixels. |
The property is read/write.
The property has no default value.
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
use this syntax to access the top coordinate of the second text rectangle of a textrange object:
oRct = oTextRange.getClientRects();
oRct[1].top;
Note that the collection index starts at 0, so the second item index is 1.
To access the top coordinate of the bounding rectangle of an object, use this syntax:
oBndRct = oElement.getBoundingClientRect();
oBndRct.top;
DHTML代码范例
This example uses the getboundingclientrect method to retrieve the coordinates of the bounds of the text rectangles within the element.
<SCRIPT>
function getCoords(oObject) {
oBndRct=oObject.getBoundingClientRect();
alert("Bounding rectangle = \nUpper left coordinates: "
+ oBndRct.left + " " + oBndRct.top +
"\nLower right coordinates: "
+ oBndRct.right + " " + oBndRct.bottom);
}
</SCRIPT>
</HEAD>
<BODY>
<P ID=oPara onclick="getCoords(this)">
是否符合公共标准
There is no public standard that applies to this property.
Applies To
更多语法参考
bottom, left, right, textrectangle collection, TextRectangle Object