event-bubbling

问题 I have a div with a link inside of it: <div id=\"myDiv\"> <a href=\"http://www.lol.com\">Lol</a> </div> Clicking the <div /> should go somewhere, but clicking the child <a /> should go to www.lol.com. I\'ve seen from previous questions and the jQuery website that .stopPropagation prevents bubbling upwards, but how do I prevent a bubble downwards (isn\'t that what\'s necessary here?). 回答1: Events only bubble up. So the click event handler for the a element is fired before the click event

问题 In my WPF application I have a ListView whose ScrollViewer.VerticalScrollBarVisibility is set to Disabled . It is contained within a ScrollViewer . When I attempt to use the mouse wheel over the ListView , the outer ScrollViewer does not scroll because the ListView is capturing the scroll events. How can I force the ListView to allow the scroll events to bubble up to the ScrollViewer ? 回答1: You need to capture the preview mouse wheel event in the inner listview ctl.PreviewMouseWheel +=

问题 I have an interesting situation - I have a table row which, currently, shows it\'s hidden counterpart when I click the \"Expand\" button. The original (unhidden) row which contains the expand button also has some content in a certain cell which, when clicked, becomes editable. I would like to be rid of the expand button, and enable expanding of the row via doubleclick anywhere in the row itself, including the field that turns editable when you click it. You can smell the trouble here already.

问题 How can i capture a click or mousedown event on a div surrounding an iframe. I\'ve tried attaching the funciton to click event on the div but since the iframe never bubbles the event up to the surrounding div the function is never called. Is there a way i can capture the event on the div and then propagate it to the iframe for default action 回答1: If the click is in the iframe area, the iframe context handles the click event, it does not bubble up to the iframe parent. So the div will never

问题 jquery toggle calls preventDefault() by default, so the defaults don\'t work. you can\'t click a checkbox, you cant click a link etc etc is it possible to restore the default handler? 回答1: In my case: $('#some_link').click(function(event){ event.preventDefault(); }); $('#some_link').unbind('click'); worked as the only method to restore the default action. As seen over here: https://stackoverflow.com/a/1673570/211514 回答2: Its fairly simple Lets suppose you do something like document

问题 This question already has an answer here: How do I prevent a parent's onclick event from firing when a child anchor is clicked? 18 answers How do I stop custom event bubbling in jQuery? For example I have this code: $(\'.myclass\').bind(\'amodaldestroy\', function(){ ....does something..... }) How do I only allow this to be triggered once on the first element it finds when bubbling? Can I just add return false ? $(\'.myclass\').bind(\'amodaldestroy\', function(){ ....does something.....

问题 This question already has answers here : prevent Scroll bubbling from element to window (15 answers) Closed 10 months ago . I have a little \"floating tool box\" - a div with position:fixed; overflow:auto . Works just fine. But when scrolling inside that box (with the mouse wheel) and reaching the bottom OR top, the parent element \"takes over\" the \"scroll request\" : The document behind the tool box scrolls. - Which is annoying and not what the user \"asked for\". I\'m using jQuery and

问题 I am trying to understand this particular difference between the direct and delegated event handlers using the jQuery .on() method. Specifically, the last sentence in this paragraph: When a selector is provided, the event handler is referred to as delegated . The handler is not called when the event occurs directly on the bound element, but only for descendants (inner elements) that match the selector. jQuery bubbles the event from the event target up to the element where the handler is

问题 What is the difference between event bubbling and capturing? When should one use bubbling vs capturing? 回答1: Event bubbling and capturing are two ways of event propagation in the HTML DOM API, when an event occurs in an element inside another element, and both elements have registered a handle for that event. The event propagation mode determines in which order the elements receive the event. With bubbling, the event is first captured and handled by the innermost element and then propagated