viewport

移动前端知识总结 文章目录 meta基础知识 常见问题 常用的移动端框架 iscroll.js underscore.js 滑屏框架 FastClick meta基础知识 H5页面窗口自动调整到设备宽度，并禁止用户缩放页面 <meta name = "viewport" content = "width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" /> 忽略将页面中的数字识别为电话号码 <meta name = "format-detection" content = "telephone=no" /> 忽略 Android 平台中对邮箱地址的识别 <meta name = "format-detection" content = "email=no" /> 当网站添加到主屏幕快速启动方式，可隐藏地址栏，仅针对 ios 的safari <meta name = "apple-mobile-web-app-capable" content = "yes" /> <!-- ios7.0版本以后，safari上已看不到效果 --> 将网站添加到主屏幕快速启动方式，仅针对ios的safari顶端状态条的样式 <meta name = "apple-mobile

再聊移动端页面的适配 前端圈真乱，这话一点不假。但乱也乱的好处，乱则生变，有变化才有进步。今天还是老调重谈，聊聊移动端页面的适配。因为对于一枚前端而言，天天和页面打交道（H5页面），那么布局的活总是少不了，这也将面临不同终端的适配问题。不知道你是否和我一样，页面布局总是或多或少会有一些蛋疼的事情发生。如果是的话，建议你花点时间阅读完下面我扯蛋的东东。 Flexible承载的使命 Flexible到今天也有几年的历史了，解救了很多同学针对于H5页面布局的适配问题。而这套方案也相对而言是一个较为成熟的方案。简单的回忆一下，当初为了能让页面更好的适配各种不同的终端，通过Hack手段来根据设备的 dpr 值相应改变 <meta> 标签中 viewport 的值： 从而让页面达么缩放的效果，也变相的实现页面的适配功能。而其主要的思想有三点： 根据 dpr 的值来修改 viewport 实现 1px 的线 根据 dpr 的值来修改 html 的 font-size ，从而使用 rem 实现等比缩放 使用Hack手段用 rem 模拟 vw 特性 有关于Flexible方案实现适配，在2015年双十一之后做过这方面的技术文档分享，感兴趣的同学可以移步阅读《使用Flexible实现手淘H5页面的终端适配》一文。虽然Flexible解决了适配终端很多问题，但它并不是万能的，也不是最优秀的

When I am in full screen mode in android using fullscreen api, the values of meta viewport attribute like initial-scale and user-scalable are not reflected in the browser. If I am not in full screen mode, the values of meta viewport are reflected. You can check it by accessing MDN:Fullscreen api example from a mobile browser I don’t find any source saying meta viewport will be disabled in fullscreen in android. So am I making any mistake or no one has documented it? Also pinch and zoom is disabled when in fullscreen Raised a issue in https://github.com/whatwg/fullscreen/issues/111 but no luck.

I've read different threads but never got to a clear conclusion, what are the differences, advantages and disadvantages of using user-scalable=no on case A or case B? I'm going to do a responsive website, which case is better then? CASE A: <meta name="viewport" content="width=device-width, user-scalable=no"> CASE B: <meta name="viewport" content="width=device-width"> You don't need to use user-scalable=no for responsive web design. You use it if you want your web app to feel more like a native app (in terms of zooming). You can control that users wont break your design if they zoom in. But

If I want to change the viewport tag dynamically, what do I need to do? For Mobile <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" /> iPad (width over 768px) <meta name="viewport" content="width=device-width, initial-scale=0.7, maximum-scale=2, user-scalable=yes" /> For sample : <meta name="viewport" content="width = 384" id="myViewport"> It sets the layout viewport width to 384 pixels. This works in most modern browsers; Nokia WebKit being the prime exception. You might want to give the layout viewport a width of 380px unless you’re on a

I have a counter which animates to a final number which is defined in the HTML. However I would like this animation to happen once it's in the viewport. I have a fiddle here which shows how scrolling seems to effect the counter number. $(document).ready(function() { $(function($, win) { $.fn.inViewport = function(cb) { return this.each(function(i, el) { function visPx() { var H = $(this).height(), r = el.getBoundingClientRect(), t = r.top, b = r.bottom; return cb.call(el, Math.max(0, t > 0 ? H - t : (b < H ? b : H))); } visPx(); $(win).on("resize scroll", visPx); }); }; }(jQuery, window)); $("

I am trying to make a zoomable map with Swing. The map is a JPanel in a JScrollPane. When zoomed in, the map changes size and paint() paints the elements in a different position. This all works great. However, the ScrollPane didn't change the viewport while increasing the image size, so that zooming in always moved the elements I was looking at out of the screen. I tried to solve this with scrollRectToVisible() , but I don't manage to get the right coordinates for the rectangle, either because I fail at doing the geometry or because I don't understand Swing all that well. Here is what I have:

I'm using this code on my webpage <meta name="viewport" content="width=1000, initial-scale=1.0, maximum-scale=1.0"> I would think the initial scale would make sure the webpage was zoomed out, but it doesn't. Any ideas? I've tried this: <meta name="viewport" content="width=device-width, initial-scale=1.0"/> But, I need the width to be set to 1000px or it doesn't look correct. Answer: <meta name="viewport" content="width=1000; user-scalable=0;" /> initial-scale=1.0 tells the browser to set the zoom level to normal (i.e. not zoomed in or out). You only need width=1000 : <meta name="viewport"