javascript-events

问题 So... from what I can find on the Google, I can't find a way to use Javascript to set my printing preferences (read: margins, orientations, footer, etc). I am about to tell my boss that what he wants to do isn't possible. I wanted to check will you fine folks priors to doing this. Please let me know. I found that in FF you can use some user_pref(key,val) settings to set up the user's preferences, but that doesn't work for over 90% of my users. I am looking for something that will cover the IE

问题 I have strange problems with my (ASP.NET) web application in Microsoft Edge. At a certain point the onclick event stops working. All buttons on the page that respond to the onclick event stop working. On the same page I have some buttons that respond to the onmousedown event and they keep working. If I refresh the page, the problem is gone. There are no errors in the console. I do not have this problem with other browsers (including IE11 under Windows 10). Did any of you experience similar

问题 I've noticed that the order of 'click' and 'change' events are different in Chrome and Firefox. See this JSFiddle for example: http://jsfiddle.net/5jz2g/3/ JavaScript: var el = $('foo'); var fn = function(e) { console.log(e.type); } el.addEvent('change', fn); el.addEvent('click', fn); In Chrome this logs: change click And in Firefox this logs: click change Is there a standard for the order of events? Which should fire first? The MDN doesn't seem to mention this and I couldn't find a thing

问题 Let me just first point out to any IE users right now (this is not a problem in Chrome, Safari or Firefox) hint hint ;) So... I have a issue with my tooltips in IE, I have a onmouseover listener for all the elements which are to be hoverable and then in my mouseover function I have a very basic cross browser declaration as such... var event = e || window.event, el = event.target || event.srcElement; I've been having issues with the window object not existing in IE or something, this has been

问题 I would like to know if there is a jQuery event that I can use to determine when a particular DIV's top property has changed. For instance, I have invisible content above a DIV. When that content becomes visible, the DIV is shifted down. I would like to capture that event and then use the offset() function to get the X/Y coordinates. 回答1: The easy answer is that there are no events in the DOM for detecting layout updates. You have a couple options the way I see it: Poll, nasty but it may work

问题 What is the difference between DOM Level 0 events vs DOM Level 2 events? I ask because I was told that Firefox and IE call them in a different order and I had never heard those terms before. 回答1: DOM Level 0 events were based around the concept of using element attributes or named events on DOM elements, e.g.: <input type="button" onclick="clickMe();" /> Or input.onclick = function() { ... }; With DOM Level 2, we've now got a more standardised approach to managing events and subscriptions,

问题 I am trying to override window.close() Method in javascript . Here is my code. (function () { var _close = window.close; window.close = function () { window.opener.alert("test"); _close(); }; })(); I am trying to bind this code to new window and execute the inner code when the new window is closed. Is is possible to override window.close like this ? 回答1: Try this You can use window.onbeforeunload event to call any function However, alert,prompt,confirm boxes are not allowed. you can return

问题 I am trying to override window.close() Method in javascript . Here is my code. (function () { var _close = window.close; window.close = function () { window.opener.alert("test"); _close(); }; })(); I am trying to bind this code to new window and execute the inner code when the new window is closed. Is is possible to override window.close like this ? 回答1: Try this You can use window.onbeforeunload event to call any function However, alert,prompt,confirm boxes are not allowed. you can return

问题 Essentially what I am trying to do is create a website that has all of its content on the home page but only has some of the content visible at any one time. The way I read to do this is through toggling visibility. The problem I am having is that: Assume the home page, when you first visit the website is blank (the way I want it to be). Lets say you click on the "about us" link. All of a sudden the about us section becomes visible (the way I want it to be). Now the problem that I have come

问题 I have this jQuery code in my JSP page (jQuery 1.7.2) : function Header() { this.add = function ( parentDiv, leftToolbar, rightToolbar ) { hbHeader = Handlebars.compile( $( "#hb-header" ).html() ); $( parentDiv ).html( hbHeader( {user:{tenantDescription:"", firstName:"", lastName:""}, leftTB:null, rightTB:null } ) ); $.ajax( { url:"${pageContext.request.contextPath}/services/login/sessionUser", type:"POST", async:true, success:function ( result ) { app.user = result; var ltHtml; var rtHtml;