W3Schools Tryit 编辑器 - W3Schools 中文教程

<!DOCTYPE html>
<html>
<body>

function myFunction(xml, i) {
    var xmlDoc = xml.responseXML; 
    x = xmlDoc.getElementsByTagName("CD");
    document.getElementById("showCD").innerHTML =
    "Artist: " +
    x[i].getElementsByTagName("ARTIST")[0].childNodes[0].nodeValue +
    "<br>Title: " +
    x[i].getElementsByTagName("TITLE")[0].childNodes[0].nodeValue +
    "<br>Year: " + 
    x[i].getElementsByTagName("YEAR")[0].childNodes[0].nodeValue;
}

function next() {
if (i < x.length-1) {
  i++;
  displayCD(i);
  }
}

function previous() {
if (i > 0) {
  i--;
  displayCD(i);
  }
}
</script>

</body>
</html>