Form submission page does not jump

The form does not jump when the page occurs, we can use the form of ajax

 

Of course, sometimes there are primitive forms, such as:

document.userForm.action=contextPath+"/user.do?user_id="+userId;

    document.userForm.submit();

 

At this time, the page will jump, we can specify the jumped page as the current page, or

Add the following statement: document.userForm.target="submitFrame"; 

 

Then add <iframe src="" id="submitFrame" name="submitFrame" frameborder="0" width="0" height="0"></iframe> to the current page.