Recent questions tagged Javascript

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javascript - Understanding Firebug profiler output

I've been trying to use Firebug's profiler to better understand the source of some JavaScript performance issues we ... ones should I trust? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to deal with relational data in Redux?

The app I'm creating has a lot of entities and relationships (database is relational). To get an idea, there're 25+ ... redux/4.4.6/react-redux.min.js"></script> See Question&...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to play only the audio of a Youtube video using HTML 5?

Is it possible to play only the audio from a YouTube video using HTML 5 and Javascript? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Is there a way to Fix a Google Maps Marker to the Center of its Map always?

To be more precise, what I try to accomplish is that while I Drag a Google Map there's a Google Maps Marker ... guys can help me. Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - jQuery Autocompletion with Eclipse Juno Java EE

I've read several DATED information on how to enable jQuery (specially auto completion) support for Eclipse. Either ... pkg. does not work. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - What are the advantages that prototype based OO has over class based OO?

Why is class based OO so popular instead of prototype based OO? Do they teach the latter in schools? Though ... didn't explain myself well. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to trigger change when using the back button with history.pushstate and popstate?

I'm pretty much a novice when it comes to js so I'm sorry if I'm missing something really simple. Basically, ... in advance to anyone who does! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Three.JS wireframe material - all polygons vs. just edges

I'm using ThreeJS in a project and noticed that older versions render wireframes differently than newer versions, ... are other differences). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - how to upload and delete files from dropzone.js

I have used the below code the image has been deleted but the thumbnail image still showing. Dropzone.options.myDropzone ... .serverId); }); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How do I add button on each row in datatable?

I am newbie for DataTables. I want to add button on each row for edit and delete(like below image) I have tried with code: ... ", "1", "" ] ] } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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353 views

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javascript - Is there any native function to convert json to url parameters?

I need convert json object to url form like: "parameter=12&asd=1" I done with this: var data = { 'action':' ... or in JSON object to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to pass multiple parameter to @Directives (@Components) in Angular with TypeScript?

Since I've created @Directive as SelectableDirective, I'm little bit confused, about how to pass more than one value ... how do I achieve this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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javascript - fetch gives an empty response body

I have a react/redux application and I'm trying to do a simple GET request to a sever: fetch('http:// ... Looking in the chrome dev tools: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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javascript - 'append' called on an object that does not implement interface FormData

I'm Trying to upload image on with jquery and ajax. But weird thing happened here. In console Log its showing TypeError ... /form> </div> </div> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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637 views

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javascript - Detect backspace and del on "input" event?

How to do that? I tried: var key = event.which || event.keyCode || event.charCode; if(key == 8) ... the key pressing action is important to me See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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350 views

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javascript - Iterate over object keys in node.js

Since Javascript 1.7 there is an Iterator object, which allows this: var a={a:1,b:2,c:3}; var it=Iterator ... storing all the object keys in k. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to get direct url for youtube videos

All the current tutorials on making your own youtube video downloader are outdated. The whole token insertion from ... D) Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

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javascript - Can I prevent history.popstate from triggering on initial page-load?

I'm working on a site that serves content via AJAX. If you click an item in the menu, a content div ... firing on pages with HTML requests? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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379 views

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javascript - HTML5 Local Storage of audio element source - is it possible?

I've been experimenting with the audio and local storage features of html5 of late and have run into something ... /local storage in WebKit. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - What's the best way to set cursor/caret position?

If I'm inserting content into a textarea that TinyMCE has co-opted, what's the best way to set the ... . Making progress little by little. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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317 views

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javascript - Mobile Safari on iOS crashes on big pages

I have a problem where Mobile Safari crashes when loading and manipulating the DOM with jQuery when the pages ... might crash Mobile Safari? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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javascript - ChangeDetectionStrategy.OnPush and Observable.subscribe in Angular 2

I'm trying to wrap my head around best practice when using Observables alongside ChangeDetectionStrategy.OnPush. The ... the right direction. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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350 views

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javascript - Route helpers in asset pipeline

using Rails 3.1.0.rc4, I'm trying to access a route helper in a javascript file (event.js.erb in this ... to access the route helper in there? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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javascript - What's the difference between putting script in head and body?

I was getting a problem . <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" / ... ? what is the main difference? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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325 views

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javascript - React Hooks - What's happening under the hood?

I've been trying out React Hooks and they do seem to simplify things like storing state. However, they seem to do ... a re-render with new data? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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414 views

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javascript - request stalled for a long time occasionally in chrome

Ajax request occasionally stalled for a long time in chrome. I finally managed to reproduced it and save all ... [st=42741] -REQUEST_ALIVE See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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690 views

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javascript - How to listen for child window closing?

I am opening a child window for Facebook sharing this way: window.open(sharingUrl,'','toolbar=0,status=0,width= ... a listener to these events? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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549 views

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javascript - Twitter bootstrap - Focus on textarea inside a modal on click

Just starting to play around with bootstrap and it's amazing. I'm trying to figure this out. I have a ... textarea. Thanks for any help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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