Id and global Variable

Asked May 12 '16 at 13:34

Active May 12 '16 at 13:35

Viewed 37 times

In Javascript, How element objects are thrown on calling the id ? I am little surprised and confused about this behaviour.

Example:

<input type="hidden" value="test" id="idtest">

When I call "idtest", it returns the whole object.

It is behaviouring the same for all id elements not only for input elements.

When I use the global variable same as "idtest", It will cause an issue with global variables.

How it is working ?

How can I prevent this ?

asked May 12 '16 at 13:34

Nandakumar

2

You can't. It was a stupid feature of Internet Explorer which has now been stupidly standardized -- we have to live with it. – Frédéric Hamidi May 12 '16 at 13:36
@FrédéricHamidi True that. – Praveen Kumar Purushothaman May 12 '16 at 13:36
1

"When I use the global variable same as "idtest", It will cause an issue with global variables." — Another reason to minimise the use of global variables. Creating a local scope for each program in an IIFE is usually a good idea. – Quentin May 12 '16 at 13:36

0 Answers0