Inayohitajika na inayofaa kufaa kwa kufaa:

Maelezo na matumizi

Inayohitajika na inayofaa kufaa kwa kufaa: removeChild()

Method kuuondoa mchezo wa mwanzi. Kama inafanyika kwa kemia, hii inatoa mchezo ambao inafaa kufaa, kama haifanyikiwa inatoa:NULL

Inayohitajika

elementNode.removeChild(node)

Mfano

Mfano 1

Maelezo yaliyotumiwa hapa ni kusaidia kuingia data ya "books.xml" katika xmlDoc na kufaa kwanza mchezo wa <book>:

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 xmlDoc = xml.responseXML;
    var y = xmlDoc.getElementsByTagName("book")[0];
    var x = xmlDoc.documentElement.removeChild(y);
    document.getElementById("demo").innerHTML =
    "Kipukuzo cha mti: " + x.nodeName;
}

Jifunze tena

Mfano 2

Kufaa kuuondoa mchezo wa mwanzi wa kwanza:

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 xmlDoc = xml.responseXML;
    var len = xmlDoc.getElementsByTagName('book').length;
    var y = xmlDoc.getElementsByTagName("book")[len-1];
    var x = xmlDoc.documentElement.removeChild(y);
    document.getElementById("demo").innerHTML =
    "Kipukuzo cha mti: " + x.nodeName;
}

Jifunze tena