strValue = textObj.substringData(offset, count);

where:

• offset is a long integer value indicating the offset of the substring, in characters, from the beginning of the string.
• count is a long integer value indicating the number of characters to retrieve, starting from the specified offset.

Let's create a text node at the document level. We put the following line in the header of this tip:

txtObj = document.createTextNode("Doc JavaScript");

Now, let's extract a substring that starts at offset 4 and of length 5. Click this button to get the answer in Netscape 6. Click in Internet Explorer 5.x and get an error message:

<FORM>
<INPUT TYPE="button" VALUE="Extract a Substring" onClick="javascript:alert(txtObj.substringData(4,5))">
</FORM>

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