javascript-events

问题 Is there a way to catch the scroll event while mouse is positioned over a div that is not scrollable? My intent is to feign scrolling by adjusting top offset until div inside of div is above view then move top offset of inner div to below view of outter div . Kind of like a carousel, but vertical and controlled by scrolling of the mouse wheel. Obviously, to catch scroll events, I would use angular.element(elem).find('.divClass').bind('scroll', function(){...}); to handle scrolling that is

问题 We have an application that is installed on an intranet and is accessed with IE. There are certain things that we want to do if the user closes the browser (e.g. using the X in the upper right hand corner of the browser) but not if the user clicks on a link to go to a different page. So in javascript, we want to detect this condition. The most common solution suggested is that in the onunload or onbeforeunload function, check to see if event.ClientY is negative. If it's negative, then the

问题 I'm creating a script where image is draggable and can change the image source when double clicked. Moving the image works ok and when double clicking the image (event is dblclick) the image changes but same time appears as double where another identical image appears in the original position. Code is: var picture = new Image(); picture.onload = function() { var picture = new Kinetic.Image({ x: 10, y: 10, image: picture, draggable: true, width: 100, height: 200 }); picture.on('dblclick',

问题 When a user starts typing into an input field, the web app I'm working on generates drop down with auto-fill options, if a user clicks on one of the options, it populates the corresponding input fields with auto-fill text. The web app contains many invoice lines, each having their own hidden auto-fill dropdown that is hidden until auto-fill options are available. If a user clicks on an autofill option, I would like to update the order with this auto-fill text. If the user does not click on an

问题 I am working in full calendar. Now i need to show up all the events from the database through the ajax call. Till now , i have taken the events from database through json. My json output is as follows after the var_dump: array (size=3) 0 => array (size=7) 'title' => string 'hi' (length=2) 'id' => int 1 'start' => string '2016-05-30 00:00:00.000' (length=23) 'rendering' => string 'background' (length=10) 'backgroundColor' => string '#ff9999' (length=7) 'className' => string 'event-full'

问题 I know $('img').load(function(){}) can work. However, I want the img dom those haven't been created at first can also trigger the event . I wonder why the below doesn't work. $(window.document).on('load', 'img', function(){ console.log('load', this); }) 回答1: jQuery doesn't support capture. So I had to use js's addEventListener. document.body.addEventListener( 'load', function(event){ var tgt = event.target; if( tgt.tagName == 'IMG'){ console.log('load', tgt.src); } }, true ) 来源： https:/

问题 I was trying to code up some anonymous function IFFE stuff in javascript and I don't understand why I am getting this error Uncaught TypeError: dM.getResources is not a function Fiddle https://jsfiddle.net/MillerDev/5qmnqr6q/ What is causing it? reportGroupDataManager ( normally this is reportGroupDataManager.js file) var reportGroupDataManager = (function() { var self = this; // cannot do this below as dM.getResources is not a function //self.getResources = "blah"; self.getResources =

问题 Below you will see the code I am working on and an included JSFiddle. Issue: The focus is running before the click/change so the margin is moving before the radio button can be selected. Please explain the code so I can learn from this. If you do not have a solution any hints or direction would also be helpful. Thanks in advance! http://jsfiddle.net/nLgqhqwc/6/ HTML <div class="panel"> <input type="text"/> </div> <div class="panel"> <input type="text"/> </div> <div class="panel"> <select>

问题 I'm writing a Chrome extension to list out the source code for each event handler attached to an <a/> tag when you roll over it. Currently, I've printed out the href attribute - $(this).attr("href") - and this works fine. The source code is on github at http://github.com/grantyb/Google-Chrome-Link-URL-Extension. When I extend it to access event handlers, $(this).data("events") returns null. I'm certain that there is a click() handler for my <a/> tag, because when I output $("a").data("events"

问题 This is the function i have FrmLoadingTimerID = setTimeout("UpdateKnl('"+ strType +"')",500); where value of strytype is a string . In the UpdateKnl method switch statement is there therefore strtype should be followed and ended with ''. I want to send another parameter along with the function but not getting the proper way to do so. i have tried the following code FrmLoadingTimerID = setTimeout("UpdateKnl('"+ strType +"',abc)",500); and FrmLoadingTimerID = setTimeout("UpdateKnl('"+ strType +