viewport

I'm trying to find the exact height and width of a browser's viewport, but I suspect that either Mozilla or IE is giving me the wrong number. Here's my method for height: var viewportHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight; I haven't started on width yet but I'm guessing it's going to be something similar. Is there a more correct way of getting this information? Ideally, I'd like the solution to work with Safari/Chrome/other browsers as well. You might try this: function getViewport() { var viewPortWidth; var viewPortHeight; // the

How do I use jQuery to determine the size of the browser viewport, and to redetect this if the page is resized? I need to make an IFRAME size into this space (coming in a little on each margin). For those who don't know, the browser viewport is not the size of the document/page. It is the visible size of your window before the scroll. To get the width and height of the viewport: var viewportWidth = $(window).width(); var viewportHeight = $(window).height(); resize event of the page: $(window).resize(function() { }); You can try viewport units (CSS3): div { height: 95vh; width: 95vw; } Browser

I have an AJAX app built for mobile Safari browser that needs to display different types of content. For some content, I need user-scalable=1 and for other ones, I need user-scalable=0 . Is there a way to modify the value of the content attribute without refreshing the page? <meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" /> I realize this is a little old, but, yes it can be done. Some javascript to get you started: viewport = document.querySelector("meta[name=viewport]"); viewport.setAttribute('content', 'width=device-width, initial

I've created a few responsive sites but am rather new to responsive site development. In my CSS 99% of my values are in ems or percentages. I am using media queries (both max-width and max-device-width) to make layout changes. I have not included a viewport meta tag and it works perfectly on iOS, a number of Android phones and tablets that I tested on, and all desktop browsers. Adding a meta tag breaks my site. Am I doing something wrong, or doing something right so that I don't need to include it? I'm confused as to why it seems to be a best practice, as it's breaking my stuff. Am I missing

屏幕尺寸、屏幕分辨率、屏幕像素密度 屏幕尺寸： 指屏幕的对角线的长度，单位是英寸，1英寸=2.54厘米。 常见的屏幕尺寸有2.4、2.8、3.5、3.7、4.2、5.0、5.5、6.0等。 屏幕分辨率：（iphone6 750*1334） 指在横纵向上的像素点数，单位是px，1px=1个像素点。一般以纵向像素*横向像素来表示一个手机的分辨率，如1920*1080。（这里的1像素指的是物理设备的1个像素点） 屏幕像素密度/像素密度/屏幕密度： 屏幕上每英寸可以显示的像素点的数量，单位是ppi，即“pixels per inch”的缩写。 屏幕像素密度与屏幕尺寸和屏幕分辨率有关 相同点：1.设备厂商规定的 2.固定的 物理像素,CSS像素 设备像素/物理像素：（分辨率） 买手机的时候会有一个 n x m 的分辨率，那是屏幕的n x m个呈像的点， 一个点（小方格）为一个物理像素。 它是屏幕能显示的最小粒度. 设备像素也被称为物理像素,他是显示设备中一个最微小的物理部件。 每个像素可以根据操作系统设置自己的颜色和亮度。 任何设备的物理像素的数量都是固定的 CSS像素： CSS像素是一个抽象的单位，主要使用在浏览器上，用来精确的度量（确定）Web页面上的内容。 它是为web开发者创造的，在css或者javascript中使用的一个抽象的层 一般情况下，CSS像素被称为与设备无关的像素

关于移动端页面在手机调整字体大小后内容适配的问题，作为新手我也刚好是第一次遇到， 已经完成的移动端页面，正常情况下在手机上的浏览器端和App端都可以正常显示，可当测 试把手机字体调大后，布局就忽然变乱了....盒子里面的内容向内挤了。说实话，刚开始感觉 这种问题应该可以忽略，毕竟字体调大后，又可以调回原来的啊，而且大部分手机都是默认 显示标准字体吧。而且我在移动端的meta标签里已经给viewport容器添加了相应属性值， 也是用rem布局的，还会出现这种错乱的情况，我能怎么办....不过后来想了想，既然你是前 端工程师，搞技术的，就应该要学会解决技术问题啊，所以我还是打开了浏览器，开始动手 我最熟悉的骚操作Ctrl+C、Ctrl+V... 刚开始我在找是不是viewport容器里还有些属性值少添加了。 我自己原来的值是这样的： <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=0"> 感觉是正常的，因为已经调整好了设备宽度、默认缩放比、还有禁止用户手动缩放，所以应该没问题，不过我之后 还是多添加了两个属性值： <meta name="viewport" content="width=device-width,initial-scale=1.0,user