textObj.deleteData(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 delete, 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 BiWeekly Columns");

and then let's delete a substring that starts at offset 15 and of length 9. Click this button to get the answer in Netscape 6 (Doc JavaScript Columns). Click in Internet Explorer 5.x and get an error message:

<FORM>
<INPUT TYPE="button" VALUE="Delete a Substring" onClick="javascript:handleClick()">
</FORM>