Recent questions tagged Javascript

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javascript - Is there a benefit to using a return statement that returns nothing?

I'm refactoring a large javascript document that I picked up from an open source project. A number of ... the results of those functions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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129 views

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javascript - Angular 1.5 component vs. old directive - where is a link function?

I've been reading this nice recent article about new .component() helper in Angular 1.5, which is supposed to help ... . It doesn't seem so. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Why inline source maps?

Today I learned that it is possible to include source maps directly into your minified JavaScript file instead of ... the minified code itself? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Twitter bootstrap collapse: change display of toggle button

I am using Twitter Bootstrap to create collapsible sections of text. The sections are expanded when a + button is ... PHP as well as JavaScript. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Accessors are only available when targeting ECMAScript 5 and higher

I am trying to run this code but it is giving me following errors: Animal.ts(10,13): error TS1056: Accessors are ... `); return "Hello"; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

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javascript - Why do we need ng-click?

Angular apps use the ng-click() attribute rather than the the onclick event. Why is this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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567 views

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javascript - Error type 3. Activity class {com.awesome_project/ com.awesome_project.MainActivity} does not exist in react native (Android device)

I've created the project using the following command. react-native init Awesome_Project I've started the packager ... exist. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Rendering newline character in VueJS

I'm creating a note app where users can add a note by entering multiline text in a textarea. When I ... to safely render newline characters? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Toggle HTML radio button by clicking its label

Is there please a simple way to make a radio button toggle - when a text near it is clicked - without introducing any ... /form> </body> </html> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - What's the difference between '.toMatchObject' and 'objectContaining'

I have written the following test: it('Can decrement the current step', function () { expect(reducer( ... a performance impact between them? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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174 views

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javascript - Initializing an Array with a Single Value

Is there a more compact way to do this sort of initialization? for (var i = 0; i < arraySize; i++) array[i] = value; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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353 views

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javascript - Get width/height of SVG element

What is the proper way to get the dimensions of an svg element? http://jsfiddle.net/langdonx/Xkv3X/ Chrome 28: ... : 300px; height: 100px; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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188 views

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javascript - Setting onSubmit in React.js

On submission of a form, I'm trying to doSomething() instead of the default post behaviour. Apparently in ... the default post behaviour? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

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javascript - Stdout buffer issue using node child_process

I'm trying to execute curl using node child_process to get a JSON file (about 220Ko) from a shared folder in a ... Pipe.onread (net.js:526:21) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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592 views

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javascript - Can you do an isometric perspective with HTML5 <canvas>?

It is possible to do an isometric perspective with HTML5 <canvas>? It is with setTransform? Or does it exist ... of Farmville. Thanks a lot. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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181 views

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javascript - Embedded document vs reference in mongoose design model?

Let's say I am building a discussion forum using Node.js, and mongoose. A user can have multiple forums, and ... this app? Thanks in advance, See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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280 views

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javascript - How to use angular 6 Route Auth Guards for all routes Root and Child Routes?

How to use angular 6 Route Auth Guards for all routes Root and Child Routes ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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162 views

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javascript - Performance problems with HTML5 Canvas in some mobile browsers.

Hi I have a Webapp that should be able to run on both Smartphone and Desktop Browsers alike. While I was ... the DOM tree or anything related? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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180 views

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javascript - Facebook and Cross domain messaging clarification?

I wanted to investigate how the facebook login transfer data to the main page ( mypage) - despite the cross domain ... FB login to my page ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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152 views

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javascript - What does backbone.js do with models that are not used anymore

Lately I am diving into the whole client-side MVC/MVVM design paterns, and the one I am particularly interested ... need to end certain objects. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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318 views

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javascript - How do I filter date range in DataTables?

I have a large dataTable which contains ride information. Every row has a start datetime and an end datetime of the ... -2016 - 31-07-2016). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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166 views

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javascript - Difference between Array.slice and Array().slice

I am going through John Resig's excellent Advanced javascript tutorial and I do not thoroughly understand what's the ... of the arguments list). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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459 views

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javascript - Inject jQuery into Puppeteer page

I'm trying to inject jQuery into my Puppeteer page because document.querySelector doesn't cut it for me: async ... Does anyone have a solution? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

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javascript - Accept drag & drop of image from another browser window

In Javascript, I know how to set up a drag & drop target that accepts file uploads from the user's computer. How ... idea how they're doing it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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225 views

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javascript - What is the intention of using React's useCallback hook in place of useEffect?

I'm trying to understand what the use case is for using React's useCallback hook in place of the useEffect hook. ... , what am I missing here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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355 views

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javascript - Set Font Awesome icons as cursor - is this possible?

Font Awesome has a very good collection of icons to be used in web projects. I want to use one of those ... image urls for Font Awesome icons. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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918 views

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javascript - React Native WebView postMessage does not work

I can't get React Native WebView postMessage to work. The React Native app successfully receives the post message sendt ... > </body> </html> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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140 views

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javascript create array from for loop

I have a years range stored into two variables. I want to create an array of the years in the range. something like: ... , 2003, ... 2039, 2040] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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