按“输入”键IE7不会阻止默认操作

Question

I have a form which contains

<button class="submit">Submit</button>

and jQuery code

$(".submit").click(function(e){
   var evt = e || window.event; // IE compatibility
   if(evt.preventDefault){  
     evt.preventDefault();  
   }else{  
      evt.returnValue = false;  
    evt.cancelBubble=true;  
  }
 //....ajax call 
});

So, I was wondering what am I doing wrong that in IE7 when I type search term and press enter it goes to my home page(action in form ="/"). Why it does not prevent IE7 from going to default action.

• is it because i am using button tag
• i also tried old way in form onsubmit call some function but it fails
• or is it because of ajax call?

Additional note:

• I have body and inside that body I have iframe and in that iframe i have form. So, I wonder is it because of iframe.

Thanks Viral

Answer 1

You are preventing the default action of the button tag, which does not affect input triggered events, also note that jQuery Event object preventDefault() method is cross-browser, try this:

$('input').on('keyup', function(e){
  if (e.which == 13) {
     e.preventDefault();
  }
})