button in the form cause it be submitted automatically

Question

has the HTML version changed lately (like from ie7 to IE8?) I notice the following change that cause me some troulbe - I am having a code that is similar to this:

<form method="POST" action="/admin/modify"> <input type="text"/> <button onclick="dosomething()">Press</button> </form> <script type="text/javascript"> function doSomething(){ // doesn't matter what actually } </script> 

What is weired to me in this code is that by pressing the button inside the form, all I want is to perform some javascript action but eventaully it causes the form to be submitted too, even when I am not willing to do it.
So - is it true? and if so how can I perform some java script actoin inside a from but prevent the form from being submitted automatically?

Answer 1

According to W3schools, submit is the new default action for button elements in IE 8:

Always specify the type attribute for the button. The default type for Internet Explorer is "button", while in other browsers (and in the W3C specification) it is "submit".

So if you don't specify a type, the form will be submitted in all browsers, but not IE 7.

this should work:

<button type="button" onclick="dosomething()">Press</button>