Ticket #10845 (closed bug: invalid)
preventDefault in keypress event cancel change event
| Reported by: | rpalbert@… | Owned by: | |
|---|---|---|---|
| Priority: | undecided | Milestone: | None |
| Component: | unfiled | Version: | 1.7.1rc1 |
| Keywords: | Cc: | ||
| Blocking: | Blocked by: |
Description
If i return false from keypress event or do a preventDefault, the change event when i leave text field is not called.
here is a simple example:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WrongPreventDefault.aspx.cs" Inherits="TPUsineV2.WrongPreventDefault" %> <!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 TransitionalEN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns=" http://www.w3.org/1999/xhtml"> <head runat="server">
<title></title> <script type="text/javascript" src="Scripts/jquery-1.7.min.js"></script> <script type="text/javascript" language="javascript">
$(document).ready(function () {
$("#TextBox1").on('keypress.datetime', function (event) {
$(this).val('i processed') return false;
}).on('change.datetime', function (event) {
alert('change');
});
});
</script>
</head> <body>
<form id="form1" runat="server"> <div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br /> <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</div> </form>
</body> </html>
Change History
Please follow the bug reporting guidlines and use jsFiddle when providing test cases and demonstrations instead of pasting the code in the ticket.
I've visually compiled your example and tried to create a test case:
http://jsfiddle.net/dmethvin/UpDLV/
From what I can tell though, this works as expected. Here's the W3C events spec:
http://www.w3.org/TR/DOM-Level-3-Events/#event-type-keypress
You've prevented the default action so the character typed by the user is not entered and there is no need for change event. You've also set the value *explicitly* in code using .val() but that does not fire a change event. Only user-initiated actions fire those events.