(iii) The getElementsByTagName method of learning JavaScript

Reference: http://www.w3school.com.cn/jsref/met_doc_getelementsbytagname.asp

HTML DOM Document Object

Definition and usage

The getElementsByTagName () method returns a collection of objects with the specified label name.

Grammar

document.getElementsByTagName (tagname)

Description

The getElementsByTagName () method returns elements in the order that they are in the document.

If you pass the special string "*" to the getElementsByTagName () method, it returns a list of all the elements in the document, the order in which they are arranged in the document.

Hints and Notes

Note: Strings passed to the getElementsByTagName () method can be case insensitive.

Instance

"Text/javascript">function getelements () {varX=document.getelementsbytagname ("input");  alert (x.length); }</script>"Myinput"Type="text"Size=" -"/&GT;&LT;BR/><input name="Myinput"Type="text"Size=" -"/&GT;&LT;BR/><input name="Myinput"Type="text"Size=" -"/><br/><br/><input type="Button"onclick="getelements ()"value="How many input elements?"/></body>
 (iii) getElementsByTagName method of learning JavaScript