Ember resources and troubleshooting - Learn web development
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...), will be extremely beneficial, as ember makes heavy use of them. objective: to provide further resource links and troubleshooting information. further resources ember.js guides tutorial: super rentals ember.js api documentation ember.js discord server — a forum/chat server where you can meet the ember community, ask for help, and help others! general troubleshooting, gotchas, and misconceptions this is nowhere near an extensive list, but it is a list of things that came up around the time of writing (latest update, may 2020). how do i debug what's going on in the framework? for framework-specific things, there is the ember-inspector add-on, which allows inspection of: routes & controllers components services promises data (i.e: from a remot...
... react interactivity: events and state react interactivity: editing, filtering, conditional rendering accessibility in react react resources ember getting started with ember ember app structure and componentization ember interactivity: events, classes and state ember interactivity: footer functionality, conditional rendering routing in ember ember resources and troubleshooting vue getting started with vue creating our first vue component rendering a list of vue components adding a new todo form: vue events, methods, and models styling vue components with css using vue computed properties vue conditional rendering: editing existing todos focus management with vue refs vue resources svelte getting started with svelte ...

Assessment: Accessibility troubleshooting - Learn web development
ore accessible? assessment or further help if you would like your work assessed, or are stuck and want to ask for help: put your work into an online shareable editor such as codepen, jsfiddle, or glitch. write a post asking for assessment and/or help at the mdn discourse forum learning category. your post should include: a descriptive title such as "assessment wanted for accessibility troubleshooting". details of what you have already tried, and what you would like us to do, e.g. if you are stuck and need help, or want an assessment. a link to the example you want assessed or need help with, in an online shareable editor (as mentioned in step 1 above). this is a good practice to get into — it's very hard to help someone with a coding problem if you can't see their code. a link t...
...with a coding problem if you can't see their code. a link to the actual task or assessment page, so we can find the question you want help with. previous overview: accessibility in this module what is accessibility? html: a good basis for accessibility css and javascript accessibility best practices wai-aria basics accessible multimedia mobile accessibility accessibility troubleshooting ...

Troubleshooting XForms Forms - Archive of obsolete content
creating an xforms form. always do this first make sure that you are running the latest release of the extension. always run your form through the xforms validator. it checks your form for a lot of errors. it is not perfect, but it can spot a lot of errors. always check the javascript console (tools, javascript console) for errors. if you get errors there, do not expect your form to work. troubleshooting check the file type is the page parsed as an xhtml document? right-click on a blank spot on the page, and select view page info. the type field should say application/xhtml+xml. anything else, and something is wrong. if your are loading your file directly from the filesystem, make sure that has .xhtml or .xml as the file ending. if you are loading the form from a server, make sure that it s...

troubleshoot.html
if you have suggestions for this page, please post them to mozilla.dev.tech.crypto. building nss having /usr/ucb/bin in the path before /usr/ccs/bin breaks the build on 64-bit solaris. the solaris compiler needs to be workshop-5.0 or greater. the 64-bit builds don't support gcc. ...

NSS troubleshooting
debugging tips, how to enable tracing of the various modules, etc. ...

places.sqlite Database Troubleshooting
how to (try to) recover from a corrupt places.sqlite sometimes after a firefox/aurora/nightly upgrade, history disappears, but bookmarks are at their place. in the profile folder a places.sqlite-corrupt file has been created. in some cases, this procedure may allow you to recover the corrupt file along with all of its contents (history). close firefox and ensure it's done closing in your task manager. before you proceed, make a backup of the firefox profile folder, in any case. create a folder to use temporarily for this work, such as my_work_folder. copy places.sqlite-corrupt from the firefox profile folder to the work folder. ...

HTTP Index - HTTP
http, http access controls, same-origin policy, security, xmlhttprequest, l10n:priority cross-origin resource sharing (cors) is a mechanism that uses additional http headers to tell browsers to give a web application running at one origin, access to selected resources from a different origin. 21 cors errors cors, errors, http, https, messages, same-origin, security, console, troubleshooting cross-origin resource sharing (cors) is a standard that allows a server to relax the same-origin policy. this is used to explicitly allow some cross-origin requests while rejecting others. 22 reason: cors disabled authentication, authentication article, cors, cross-origin, disabled, errors, http, https, messages, resource, same origin, same-origin, security, sharing, valid...
...-origin resource sharing (cors) is a standard that allows a server to relax the same-origin policy. this is used to explicitly allow some cross-origin requests while rejecting others. ...
...on, secure, troubleshooting a request that needs to use cors was attempted, but cors is disabled in the user's browser. when this happens, the user needs to turn cors back on in their browser. 23 reason: cors header 'access-control-allow-origin' does not match 'xyz' cors, corsalloworiginnotmatchingorigin, cross-origin, error, http, https, messages, reasons, security, console, troubleshooting simply put, the origin making the request does not match any of the origins permitted by the access-control-allow-origin header. ...
...And 11 more matches

Index - Learn web development
art. we'll cover accessibility in special detail. 3 accessible multimedia accessibility, article, audio, beginner, codingscripting, html, images, javascript, learn, multimedia, video, captions, subtitles, text tracks this chapter has provided a summary of accessibility concerns for multimedia content, along with some practical solutions. 4 assessment: accessibility troubleshooting accessibility, assessment, beginner, css, codingscripting, html, javascript, learn, wai-aria in the assessment for this module, we present to you a simple site with a number of accessibility issues that you need to diagnose and fix. 5 css and javascript accessibility best practices accessibility, article, css, codingscripting, guide, javascript, learn, color, contrast,...
...orm that lets you build and run applications on google’s infrastructure — whether you need to build a multi-tiered web application from scratch or host a static website. here's a step-by-step guide to hosting your website on google app engine. ...
... inline, l10n:priority, what so there you go, your first step into the world of javascript. we've begun with just theory, to start getting you used to why you'd use javascript and what kind of things you can do with it. along the way, you saw a few code examples and learned how javascript fits in with the rest of the code on your website, amongst other things. 88 what went wrong? troubleshooting javascript article, beginner, codingscripting, debugging, developer tools, error, javascript, learn, tutorial, console.log, l10n:priority so there we have it, the basics of figuring out errors in simple javascript programs. it won't always be that simple to work out what's wrong in your code, but at least this will save you a few hours of sleep and allow you to progress a bit faster ...
...so that's great progress for now. we can now add todo items to our app, and the state of the data is tracked using our service. next we'll move on to getting our footer functionality working, including the todo counter, and look at conditional rendering, including correctly styling todos when they've been checked. we'll also wire up our "clear completed" button. 282 ember resources and troubleshooting beginner, ember, frameworks, javascript, learn, client-side, resources our final ember article provides you with a list of resources that you can use to go further in your learning, plus some useful troubleshooting and other information. 283 focus management with vue refs beginner, frameworks, javascript, learn, client-side, focus management, refs, vue so that's ...

TypeScript support in Svelte - Learn web development
t the app in development mode these instructions apply to any svelte project you'd like to convert to typescript. just take into account that the svelte community is constantly improving svelte typescript support, so you should run npm update regularly to take advantage of the latest changes. note: if you find any trouble working with typescript inside a svelte application, have a look at this troubleshooting/faq section about typescript support. as we said before, typescript is a superset of javascript, so your application will run without modifications. currently you will be running a regular javascript application with typescript support enabled, without taking advantage of any of the features that typescript provides. you can now start adding types progressively. once you have typescript con...
... create a types folder. add a todo.type.ts file inside it. give todo.type.ts the following content: export type todotype = { id: number name: string completed: boolean } note: the svelte template uses svelte-preprocess 4.0.0 to support typescript. from that version onward you have to use export/import type syntax to import types and interfaces. check this section of the troubleshooting guide for more information. now we'll use todotype from our todo.svelte component. first add the lang="ts" to our <script> tag. let's import the type and use it to declare the todo property. replace the export let todo line with the following: import type { todotype } from '../types/todo.type' export let todo: todotype note: another reminder — when importing a .ts fi...
... react interactivity: events and state react interactivity: editing, filtering, conditional rendering accessibility in react react resources ember getting started with ember ember app structure and componentization ember interactivity: events, classes and state ember interactivity: footer functionality, conditional rendering routing in ember ember resources and troubleshooting vue getting started with vue creating our first vue component rendering a list of vue components adding a new todo form: vue events, methods, and models styling vue components with css using vue computed properties vue conditional rendering: editing existing todos focus management with vue refs vue resources svelte getting started with svelte ...

Index - Archive of obsolete content
ad no summary! 161 localization add-on sdk, localization no summary! 162 logging add-on sdk no summary! 163 modifying web pages based on url add-on sdk no summary! 164 modifying the page hosted by a tab add-on sdk no summary! 165 open a web page add-on sdk no summary! 166 troubleshooting no summary! 167 unit testing add-on sdk, jpm no summary! 168 using xpcom without chrome bookmarks, chrome, sdk, xpcom no summary! 169 using third-party modules (jpm) addon-sdk, jpm first, while in the root of your add-on, install the package that contains the modules you want to use: 170 bootstrapped extension...
...t xforms no summary! 2236 other resources xforms no summary! 2237 requests for enhancement xforms no summary! 2238 rfe to the custom controls xforms no summary! 2239 rfe to the custom controls interfaces xforms no summary! 2240 rfe to the xforms api xforms no summary! 2241 troubleshooting xforms forms xforms no summary! 2242 using xforms and php xforms no summary! 2243 xforms api reference xforms the xforms interfaces has the following naming convention: 2244 xforms config variables xforms no summary! 2245 xforms custom controls xforms you are in the right place if you would like to cr...

Index of archived content - Archive of obsolete content
display a popup getting started (jpm) getting started (cfx) list open tabs listen for page load listening for load and unload localization logging modifying web pages based on url modifying the page hosted by a tab open a web page troubleshooting unit testing using xpcom without chrome using third-party modules (jpm) bootstrapped extensions code snippets alerts and notifications autocomplete bookmarks boxes canvas code snippets coo...
... xforms textarea element xforms trigger element xforms upload element other resources requests for enhancement rfe to the custom controls rfe to the custom controls interfaces rfe to the xforms api troubleshooting xforms forms using xforms and php xforms api reference xforms config variables xforms custom controls xforms custom controls examples xforms styling background-size foreach beginner tutorials creating reusable content with c...

SeaMonkey - making custom toolbar (SM ver. 1.x) - Archive of obsolete content
see the pop-up message. further development this section describes how you can develop your button further. uninstalling the button if you ever want to uninstall the button, delete the files chrome.rdf and overlays.rdf again, just as you did in step 2. remove the line that you added to installed-chrome.txt in step 3. delete the custombutton directory that you created in step 4. restart seamonkey. ...
...however, you might see messages that are unhelpful or confusing, or that come from other parts of the application. to open the javascript console, choose tools – web development – javascript console. ...