canHaveChildren参数属性

Retrieves a value indicating whether the object can contain children.

dhtml语法

HTML	N/A
Scripting	[ bChildren = ] object.canHaveChildren

DHTML可能的值

bChildren

Boolean that receives one of the following values. false Object cannot be a parent to child objects. true Object can be a parent to child objects.

The property is read-only. The property has no default value.

Remarks

Objects do not have to contain children for the canHaveChildren property to return true. This property is useful in determining whether objects can be appended as children.

DHTML代码范例

This example uses the canHaveChildren property to add a new object to the first element in a Web page that can contain children.

<SCRIPT>
window.onload=fnInit;
function fnInit(){
var oNewObject=document.createElement("SPAN");
var oNewText=document.createTextNode("Test");
oNewObject.appendChild(oNewText);
for(var i=0;i<document.all.length;i++){
if(document.all[i].canHaveChildren==true){
document.all[i].appendChild(oNewObject);
break;
}
}
}
</SCRIPT>
<INPUT TYPE=button VALUE="Add Child" onclick="fnAddChild()">
<DIV ID=oGrandParent STYLE="background-color: #CFCFCF;">
<WBR>WBR - </WBR>
<BR>
<NOBR>NOBR - </NOBR>
<P>P - <s/P>
</DIV>

This feature requires Microsoft® Internet Explorer 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, B, BDO, BIG, BLOCKQUOTE, BODY, BUTTON, CAPTION, CENTER, CITE, CODE, COL, COLGROUP, COMMENT, CUSTOM, DD, DEL, DFN, DIR, DIV, DL, DT, EM, FIELDSET, FONT, FORM, FRAMESET, HEAD, hn, HTML, I, IFRAME, 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, MAP, MARQUEE, MENU, nextID, OBJECT, OL, OPTION, P, PLAINTEXT, PRE, Q, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, SUB, SUP, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TR, TT, U, UL, VAR, XMP

更多语法参考

appendchild, createelement, createTextNode