opera | 易学教程

Rails ( set_no_cache method) Cannot disable browser caching in Safari and Opera

阅读更多关于 Rails ( set_no_cache method) Cannot disable browser caching in Safari and Opera

问题 After using Devise for my authentication, I found that there was a security hole in that, after the user logs out, the session variables are preserved. This allows anyone to press the back button and access the logged in user's previous screen. I looked at these posts Num 1 Num 2 Num 3 I added these lines to my application_controller before_filter :set_no_cache def set_no_cache response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate" response.headers["Pragma"] =

认识jQuery和DOM

阅读更多关于认识jQuery和DOM

jQuery是一个快速、简洁的 JavaScript框架，是继 Prototype 之后又一个优秀的JavaScript代码库（或JavaScript框架）。jQuery设计的宗旨是“write Less，Do More”，即倡导写更少的代码，做更多的事情。它封装 JavaScript 常用的功能代码，提供一种简便的 JavaScript设计模式，优化HTML文档操作、事件处理、动画设计和Ajax交互。 jQuery的核心特性可以总结为：具有独特的链式语法和短小清晰的多功能接口；具有高效灵活的 css选择器，并且可对CSS选择器进行扩展；拥有便捷的插件扩展机制和丰富的插件。jQuery兼容各种主流浏览器，如IE 6.0+、FF 1.5+、Safari 2.0+、Opera 9.0+等。如何学习jQuery 学习jQuery，主要学习jQuery的一大堆的api。 API ：application programming interface：应用程序编程接口，说白了，API就是方法。如：obj.funName(params); 注意：方法调用的时候，都带小括号(),使用jQuery的方法的时候，不要忘了小括号。 DOM—Document Object Model,它是 W3C 国际组织的一套 Web标准。它定义了访问HTML文档对象的一套属性、方法和事件。

OperaDriver fails to start

阅读更多关于 OperaDriver fails to start

There was an update last week for Opera browser. Since then it stopped working. It opens the browser and shows 'data:,' in the URL and throws webdriver exception. Is Opera 41 compatible with selenium 2.53.1? Exception thrown is: Result Message: Initialization method SDTestAutomation.HomePage_Tests.Init threw exception. OpenQA.Selenium.WebDriverException: OpenQA.Selenium.WebDriverException: The HTTP request to the remote WebDriver server for URL http://localhost:64865/session timed out after 60 seconds. ---> System.Net.WebException: The request was aborted: The operation has timed out.. Result

Cookies not being sent back and forth properly in Opera

阅读更多关于 Cookies not being sent back and forth properly in Opera

问题 First off, I'm not sure whether this is a problem in Opera 12.01 or not, but the problem only occurs in Opera. I've tested in FF14, Chrome 21, Safari 5 (Windows) and Safari Mac and Webkit browsers on Android and iPhone. My application runs on the trigger.io forge platform and uses a proxy to route requests from the web application to the service. The proxy simply forwards the requests and cookies along and this works as expected in most of the browsers. After inspecting the request in

JavaScript - How can i tell Browser Chrome, Firefox, Safari, to allow me to have the refresh button disabled?

阅读更多关于 JavaScript - How can i tell Browser Chrome, Firefox, Safari, to allow me to have the refresh button disabled?

I have logical application running where i need to store the var algorithmToApply=1 or etc ; Where each of my value has relative algorithm assigned. The main problem is while testing people clicking on browser refresh button and all my application logic crash. algorithmToApply = 1 ; // Thinking algorithmToApply = 2 ; // Waiting algorithmToApply = 11 ; // Downloading algorithmToApply = 100 ; // Booting algorithmToApply = 900 ; // Kernel prepare algorithmToApply = 0 ; // User refresh button is a BUG How can i using JavaScript request Browsers (Opera or Chrome optionally Firefox/Safari), to allow

Preventing opera mouse gestures

阅读更多关于 Preventing opera mouse gestures

Is it possible to prevent opera mouse gestures for right button? I have web app on html5 and I decided to use right mouse button. But it doesnt work in opera, because opera has mouse gestures. event.preventDefault(); // it doesn't work May be anybody knows? Thank you. It doesn't actually have anything to do with gestures specifically. Opera doesn't allow scripts to detect context menu events by default so you'd have to ask users to change their site preferences for your site to allow scripts to detect context menu events. Right click -> Edit Site Preferences -> Scripting (tab) -> Allow scripts

MAILTO max-length of each internet browsers?

阅读更多关于 MAILTO max-length of each internet browsers?

Update: Two years before this question, a similar question was asked: Effective maximum mailto: body lengths as pointed out by Peter O. Luckily answers of both questions are complementary :-) Browsers evolved a lot in the last two years, therefore we can say this question is an update of the other one ;-) The specifications does not limit the mailto command length: RFC 6068 specification HTML 4 specification ( mailto command is an URL) (please see this SO answer , the answers of this SO question and the comment of this one ) Therefore the mailto command length depends on internet browser

Uploadify inside Jquery UI Dialog => Chrome & Opera bugs

阅读更多关于 Uploadify inside Jquery UI Dialog => Chrome & Opera bugs

I have the following code: <!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" media="screen" href="jquery-ui-1.8.9.custom.css" /> <script type="text/javascript" src="jquery-1.5.min.js"></script> <script type="text/javascript" src="jquery-ui-1.8.9.custom.min.js"></script> <script type="text/javascript" src="jquery.uploadify.js"></script> </head> <body> <script type="text/javascript"> manualLightboxContent = function () { $("#dialogContent").html($('#module_wrapper').html()); $("#dialogContent").dialog( { 'modal': true } ); } </script> <a href="#" onclick="manualLightboxContent

Javascript Run Function After Page Load

阅读更多关于 Javascript Run Function After Page Load

I'm trying to create a small automation script in Javascript that I want to run with a site using Opera's User Script feature to define external scripts to run. I have used this feature before to run scripts I wrote with external sites, to nice effect. I need to wait till the page loads for the script to run, but I can't seem to get this to work. The code currently is: if (addEventListener in document) { // use W3C standard method document.addEventListener('load', meerfirst(), false); } else { // fall back to traditional method document.onload = meerfirst(); } function meerfirst(){ nameForm =

css兼容性写法大全

阅读更多关于 css兼容性写法大全

本文转载于: 猿2048 网站▶ css兼容性写法大全常见的浏览器内核引擎以及具体应用： Trident： IE； Gecko： Firefox； webkit： Safari，Google Chrome，遨游3，猎豹，百度； Presto：Opera——Opera mini 书写顺序：firefox,IE8,IE7,IE6 IE6:*,_ IE7:*,+ IE8:\9,\0 chrome：-webkit- firefox：-moz-，root（仅ff认） *和_ ， ie6可以识别； * ， ie6,ie7可以识别； !important ,表示高优先级，ie7及以上，firefox都支持，ie6认识带!important的样式属性，但不认识!important的优先级； -webkit- ，针对safari，chrome浏览器的内核CSS写法 -moz-，针对firefox浏览器的内核CSS写法 -ms-，针对ie内核的CSS写法 -o-，针对Opera内核的CSS写法如果只让ie6看见用 *html .head{color:#000;} 　　如果只让ie7看见用 *+html .head{color:#000;} 　　如果只让ff看见用: root body .head{color:#000;} 　　如果只让ff、IE8看见用 html>/**/body .head

订阅 opera