mozilla | 易学教程

Why IE9 +, Chrome and Opera15 + browsers identify themselves as Mozilla in the User Agent?

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问题 I was looking for a way to identify the IE with JavaScript and suddenly, I noticed that the browsers, were identified as Mozilla: Opera Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36 OPR/17.0.1241.53 Chrome Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36 IE Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0) Now I'm wondering why this browsers are

Firefox outline around box-shadow on hover

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问题 This is my first question on StackOverflow, so I'll try to format it the right way. Basically, I have a div with a border and an outline. On hover, the div also gets a shadow, which, of course, should be outside of the outline. This goes well in all browsers, except for firefox. Firefox seems to render the outline outside of the box-shadow for some reason. An example can be seen here: http://rubencoolen.be/test.php This is my CSS: .block { background: #eceeeb; border: 3px solid white; outline

Scrapy 框架 (学习笔记-1)

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环境: 1.windows 10 2.Python 3.7 3.Scrapy 1.7.3 4.mysql 5.5.53 一、Scrapy 安装 1. Scrapy:是一套基于Twisted的一部处理框架,是纯Python实现的爬虫框架,用户只需要定制开发几个模块就可以轻松的实现一个爬虫,用来抓取网页内容或者各种图片。 1. 安装命令:pip install scrapy 2. 查看是否安装成功,命令: scrapy 二、项目实战 1. 抓取豆瓣电影('https://movie.douban.com/top250')Top250数据,并将数据保存为csv,json和存储到数据库中 2. 一个完整项目基本包括:新建项目、明确目标、制作爬虫、存储内容四个步骤。（一）、新建项目 1. 创建项目命令: scrapy startproject [项目名称] 例:scrapy startproject Douban 项目目录结构: # Douban # Douban # spiders # __init__.py # __init__.py # items.py # middlewares.py # pipelines.py # settings.py # scrapy.cfg 2.创建爬虫在spiders下执行命令: scrapy genspider [爬虫名] [待爬取网站的域名]

building a Cygwin version of GNU make

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问题 I want to add a couple of logging options to GNU make so I can see what is happening when building FireFox and friends. I have the make-3.80 sources and a complete working Cygwin build environment. Starting with ./configure and the Make I get a working executable as expected. Question: What configuration is required so the executable in an identical manner to the make.exe bundled in Moztools? Background: If HAVE_CYGWIN_SHELL is not defined then with #define HAVE_CYGWIN_SHELL 1 Make barfs as

navigator.userAgent.indexOf来判断浏览器类型

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Mozilla form.submit() not working

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I am creating a dynamic form using following code, function createForm() { var f = document.createElement("form"); f.setAttribute('method',"post"); f.setAttribute('action',"./Upload"); f.setAttribute('name',"initiateForm"); f.acceptCharset="UTF-8"; var name = document.createElement("input"); name.setAttribute('type',"text"); name.setAttribute('name',"projectname"); name.setAttribute('value',"saket"); f.appendChild(name); f.submit(); } But in Mozilla nothing happens but code works as expected ( in chrome). This code is being called by another function which is invoked by button on click event.

gulp autoprefixer doesn't add moz prefix

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问题 I am using gulp with autoprefixer in my project, and I have to use backgrounds gradient like this: background: linear-gradient(#e98a00, #f5aa2f); but output is: background:-webkit-linear-gradient(#e98a00,#f5aa2f); background:linear-gradient(#e98a00,#f5aa2f); What wrong with me? Part of Gulpfile.js gulp.task('styles', function() { return gulp.src(['css/less/mainPage.less']) .pipe(plumber()) // .pipe(concat('base.scss')) .pipe(less()) .pipe(prefix([{ browsers: ['IE 8', 'IE 9', 'last 5 versions'

富文本编辑器原理

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富文本编辑器，Rich Text Editor, 简称 RTE, 是一种可内嵌于浏览器，所见即所得的文本编辑器。富文本编辑器不同于文本编辑器，比较好的文本编辑器有kindeditor,fckeditor等，百度推出的开源富文本编辑器UEditor算是其中的后起之秀。对于支持富文本编辑的浏览器来说，其实就是设置 document 的 designMode 属性为 on 后，再通过执行 document.execCommand('commandName'[, UIFlag[, value]]) 即可。commandName 和 value 可以在MSDN 上和MDC 上找到，它们就是我们创建各种格式的命令，比方说，我们要加粗字体，执行 document.execCommand('bold', false) 即可。很简单是吧？但是值得注意的是，通常是选中了文本后才执行命令，被选中的文本才被格式化。对于未选中的文本进行这个命令，各浏览器有不同的处理方式，比方 IE 可能是对位于光标中的标签内容进行格式化，而其它浏览器不做任何处理，这超出本文的内容，不细述。同时需要注意的是，UIFlag 这个参数设置为 true 表示 display any user interface triggered by the command (if any) 各浏览器之前的区别 1

How do JavaScript versions correlate to ECMAScript versions?

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问题 For example, [].map was "implemented in JavaScript 1.6." Is that an ES5 method? How does the 1.6 correlate to an ECMAScript version? 回答1: There aren't really strict correspondences between the version numbers Mozilla uses and the ECMAScript standard's version numbers. There's a table on Wikipedia that might be what you're looking for -- you'll see that JavaScript 1.6 corresponds to ECMAScript 3 and then some additional extensions. [].map specifically was standardized in ECMAScript 5, but to

HTML/Javascript: remember scroll independent of the window size

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问题 I've got a webpage for reading books online. I'd like to save the position inside the document so when a user resumes his reading, he starts in the point where he previously was. I can get the scroll using things like window.pageYOffset, but this depends on the browser window size. In other words, if you make your window narrower, the same text will be at a different scroll (see the image for an example). So I need to come up with a window-size independent way of measuring scroll. Any ideas?