viewport

问题 I'm trying to use a smaller canvas as a viewport for another much bigger canvas. I really like the approach used in this the solution on a similar question. He basically uses CanvasRenderingContext2D.drawImage() to "crop" the buffer/offset canvas and then displays that portion of the image on the smaller canvas (viewport). I'm trying to implement a simpler version of the given solution in this fiddle: https://jsfiddle.net/avvac0x8/2/. But as you can see the viewport is not entirely in sync

问题 I'm creating simple css animation of text sliding to the page from right. I'm using jQuery to trigger animation by adding a class to element. But the start position must be outside viewport and that triggers bottom scrollbar to appear. How to prevent that? This is relevant css fragment h2{ position:absolute; right:-500px; top:190px; font-size:45px; .transition(3s, linear); } h2.centered{ top:88px; left:30%; } 回答1: Is this what you are looking for? I'm guessing you are triggering the change in

问题 I'm creating simple css animation of text sliding to the page from right. I'm using jQuery to trigger animation by adding a class to element. But the start position must be outside viewport and that triggers bottom scrollbar to appear. How to prevent that? This is relevant css fragment h2{ position:absolute; right:-500px; top:190px; font-size:45px; .transition(3s, linear); } h2.centered{ top:88px; left:30%; } 回答1: Is this what you are looking for? I'm guessing you are triggering the change in

问题 I have a web app that I'm trying to run on an iPad 3. When I pull it up, the app is allowing vertical scroll when it shouldn't be. I've gone through the same process with other web apps without any issues, and am not sure what I am missing this time around. Inside head element of my html, I have the following meta tags: <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=device-width,

问题 I have a web app that I'm trying to run on an iPad 3. When I pull it up, the app is allowing vertical scroll when it shouldn't be. I've gone through the same process with other web apps without any issues, and am not sure what I am missing this time around. Inside head element of my html, I have the following meta tags: <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=device-width,

问题 I have a web app that I'm trying to run on an iPad 3. When I pull it up, the app is allowing vertical scroll when it shouldn't be. I've gone through the same process with other web apps without any issues, and am not sure what I am missing this time around. Inside head element of my html, I have the following meta tags: <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=device-width,

问题 I have a web app that I'm trying to run on an iPad 3. When I pull it up, the app is allowing vertical scroll when it shouldn't be. I've gone through the same process with other web apps without any issues, and am not sure what I am missing this time around. Inside head element of my html, I have the following meta tags: <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=device-width,

问题 I am trying to disable user pinch zoom on a web page dedicated for mobile devices, i tried the following meta tags with no avail: <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/> I also tired this: <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/> some of my older websites that used to succeed in disabling user pinch zooming before, no longer work anymore as of today. I am not

问题 I am trying to disable user pinch zoom on a web page dedicated for mobile devices, i tried the following meta tags with no avail: <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/> I also tired this: <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/> some of my older websites that used to succeed in disabling user pinch zooming before, no longer work anymore as of today. I am not

问题 I've googled about mobile viewport, and I found out that it's a virtual window that most of the mobile browsers render pages in it. viewport is wider than the screen. here and here But When I search the web for my sony xperia sp phone viewport size, This site tell me that my viewport size is 360px which is too smaller than my screen resolution width (720 px)(1280*720 px). I'm a little confused, can anybody briefly explain What's going on here? 回答1: Basically, modern screens have a much higher