XML DOM substringData()Methods
Comment object
Definition and Usage
The substringData() method retrieves a string from a comment node.
Syntax
substringData(start,length)
| Parameter | Description |
|---|---|
| start | Required. Specifies where to start extracting characters. The start value begins at 0. |
| length | Required. Specifies how many characters to extract. |
Example
The following code snippet usesloadXMLDoc()put "books_comment.xmlLoad into xmlDoc and get the "(Hardcover)" string from the first comment element:
Example
xmlDoc=loadXMLDoc("books_comment.xml");
x=xmlDoc.getElementsByTagName("book")[0].childNodes;
for (i=0;i<x.length;i++)
{
if (x[i].nodeType==8)
{
//Process only comment nodes
y=x[i].substringData(33,11);
document.write(y);
document.write("
");
}
}
x=xmlDoc.getElementsByTagName("book")[0].childNodes;
for (i=0;i<x.length;i++)
{
if (x[i].nodeType==8)
{
//Process only comment nodes
y=x[i].substringData(33,11);
document.write(y);
document.write("
");
}
}
Output:
(Hardcover)
Try it Yourself »
In the above example, we use a loop and an if statement to perform processing only for comment nodes. The node type of a comment node is 8.
Comment objectother extensions