Mwongozo wa kina cha mababu wa DOM wa XML

Mifano na matumizi

childNodes Inatuma kikundi cha hati cha kina kinachotumika kwa kina kinachotumika.

Mbinu:Unaoweza kutumia kipimo cha length kuwaonyesha kina ya mababu na kufikia kikundi cha mababu kwa kufikia habari inayotaka.

Makosa

nodeObject.childNodes

Maelezo ya kidokezo

Mifano

Mfano 1

Makina ya kuhusisha 'books.xml' kwenye xmlDoc na kuonyesha mababu ya hati ya uambatishaji XML:

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
   if (this.readyState == 4 && this.status == 200) {
       myFunction(this);
   }
};
xhttp.open("GET", "books.xml", true);
xhttp.send();
function myFunction(xml) {
    var x, i, xmlDoc, txt;
    xmlDoc = xml.responseXML;
    txt = "";
    x = xmlDoc.childNodes;
    for (i = 0; i < x.length; i++) {
        txt += "Nodename: " + x[i].nodeName +
        " (nodetype: " + x[i].nodeType + ")";
    }
    document.getElementById("demo").innerHTML = txt;
}

亲自试一试

Mfano 2

Tazama ma elementi zote ya dosari ya XML kwa kila mabaki ya maelezo:

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        myFunction(this);
    }
};
xhttp.open("GET", "books.xml", true);
xhttp.send();
function myFunction(xml) {
    var x, y, i, xmlDoc, txt;
    xmlDoc = xml.responseXML;
    txt = "";
    x = xmlDoc.documentElement;
    y = x.childNodes;
    for(i = 0; i < y.length; i++) {
        txt += "Nodename: " + y[i].nodeName +
        " (nodetype: " + y[i].nodeType + ")<br>";
        for(z = 0; z < y[i].childNodes.length; z++) {
            txt += "Nodename: " + y[i].childNodes[z].nodeName +
            " (nodetype: " + y[i].childNodes[z].nodeType + ")<br>";
        }
    }
    document.getElementById("demo").innerHTML = 
    "Nodename: " + xmlDoc.nodeName +
    " (nodetype: " + xmlDoc.nodeType + ")<br>"
    "Nodename: " + x.nodeName + 
    " (nodetype: " + x.nodeType + ")
" +
    txt;
}

亲自试一试

浏览器支持

所有主流浏览器都支持 childNodes Hisia.