Ask an ImageButton onclick event.

dalalilall

Make a registration page. Submit button with ImageButton
But the validation form uses self-written JS. Function CheckForm ()
This way I need to call CheckForm () that JS function after pressing ImageButton.
Add ImageButton.Attributes.Add ("onclick", "return CheckForm ();") to ImageButton

CheckForm () {
if (document.getElementById ("usrname"). value.length == 0) {
alert ("username");

return false;
}
else {
return true;
}

When I press the button, the user name has an alert effect when it is empty. But return false has no effect. The page is still submitted. Refreshed once. This is the effect of using IE. But using FF is effective. It is really strange I can't figure out what's going on.

weh007

Attributes.Add ("onclick", "CheckForm ();")

looser_01

If there is no script error on the page, it should be no problem writing in IE
Try adding event.cancelBubble = true to the function;

dydcool

Try it another way ~~~~
For example: try it as a button. If there is nothing wrong, it means that the imgbutton does not support javascript client events.