scroll

问题 I am trying to detect if an element has been scrolled out and have done the following code $(window).bind('scroll', function(){ var $btn = $('#intro div.summary a[href=#top]'); if($(window).scrollTop() > ($btn.offset().top+$btn.height())){ console.log('out'); } }); I have an anchor in some body text, that I am hoping to clone and make a fixed nav out of once the div.intro is scrolled out. My problem is that the code fires as soon as the element is out of view, but keeps firing. So I cannot do

问题 I'm working on a canvas app embedded in a page. I have it so you can zoom into the drawing with the mousewheel but unfortunately this scrolls the page as it is part of an article. Is it possible to prevent mousewheel scrolling on the window when I'm mousewheeling on a dom element?! 回答1: Attach an event handler for mousewheel (Not Gecko) / DOMMouseScroll (Not IE) and prevent its default action (that is to scroll content): if (element.addEventListener) element.addEventListener("DOMMouseScroll",

问题 How to autoscroll a Listbox after adding a new item, but only if the scrollbar is at the bottom before the item is added? 回答1: You can just try it : listBox1.SelectedIndex = listBox1.Items.Count - 1; listBox1.SelectedIndex = -1; 回答2: This sample code should help you out. I've done this many times with a TextBox but it took awhile to figure it out for a ListBox Obviously, it's just a Form with a Button and a ListBox. Modify to fit your needs: private void button1_Click(object sender, EventArgs

问题 Scroll of my listview is very fast. I want to customize this and want to make it slower. I tried set android:fastscrollenabled="false" but don't solve this problem. My device is Samsung Galaxy S2. Can someone help me? Any help will be greatly appreciated! Thank in advanced :) 回答1: Please use setFriction(float) method of ListView. Because default friction value could differ between devices, it's better to use base value from ViewConfiguration.getScrollFriction() Example: setFriction

问题 Scroll of my listview is very fast. I want to customize this and want to make it slower. I tried set android:fastscrollenabled="false" but don't solve this problem. My device is Samsung Galaxy S2. Can someone help me? Any help will be greatly appreciated! Thank in advanced :) 回答1: Please use setFriction(float) method of ListView. Because default friction value could differ between devices, it's better to use base value from ViewConfiguration.getScrollFriction() Example: setFriction

问题 Scroll of my listview is very fast. I want to customize this and want to make it slower. I tried set android:fastscrollenabled="false" but don't solve this problem. My device is Samsung Galaxy S2. Can someone help me? Any help will be greatly appreciated! Thank in advanced :) 回答1: Please use setFriction(float) method of ListView. Because default friction value could differ between devices, it's better to use base value from ViewConfiguration.getScrollFriction() Example: setFriction

问题 I used the following piece of code in the web.config in order to maintain the scrollbar position after a server postback: <pages maintainScrollPositionOnPostBack="true" > </pages> All is working fine, but now i have a gridview encapsuled within a div with a scrollbar in the div (internal scrollbar). When an event occur on one of the rows inside the gridview, the internal scrollbar doesn't maintain its original position unlike the outer one. Any ideas? 回答1: For future reference: The normal

问题 look at my I have 10 names in the ion-scroll but it is coming to the next line like a paragraph. here is my .html code. <ion-scroll scrollX="true" style="width:100vw; height:50px" > <ion-row class="headerChip"> <div *ngFor="let tabName of product_type; let idx = index" [ngClass]="showSelectedTabArray[idx].showSelectedTab ? 'headerChipGray' : 'headerChipGreen'"> <ion-chip (click)="changeData(tabName)"> <ion-label >{{tabName.languagename}}</ion-label> <div></div> </ion-chip> </div> </ion-row> <

问题 I have been loocking for 10 hours (literally) and I'm done, I need to ask. Thing is I'm learning How use LibGdx to program Java games. I'm doing a Horizontal Space Ship Game. So, my worst problem here is that I do not know how do scroll (I think draw will explain better). I want to draw a hudge background (Space) and make my OrthographicCamera move right like with my SpaceShip, so it will create a Scroll effect with the Space Background. No enemys and nothing but the ship on the screen. I'm

问题 I have been loocking for 10 hours (literally) and I'm done, I need to ask. Thing is I'm learning How use LibGdx to program Java games. I'm doing a Horizontal Space Ship Game. So, my worst problem here is that I do not know how do scroll (I think draw will explain better). I want to draw a hudge background (Space) and make my OrthographicCamera move right like with my SpaceShip, so it will create a Scroll effect with the Space Background. No enemys and nothing but the ship on the screen. I'm