Recent questions tagged Javascript

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javascript - Ad Blocker detection AKA Adblock Plus

After searching Google and Stackoverflow for a few hours I could not find a solution. What I'm trying ... Examples will be greatly appreciated. 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 - React: How to navigate through list by arrow keys

I have build a simple component with a single text input and below of that a list (using semantic ui). Now I would ... /List> </Container> ) } } 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 - Dynamically Rendering a React component

In React JSX it does not appear to be possible to do something like this: render: function() { return ( <{this ... .props.component.slug}> ); } 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 - Scaling an image to fit on canvas

I have a form that allows a user to upload an image. Once the image is loaded, we perform some scaling on ... please? Many 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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javascript - How do I access store state in React Redux?

I am just making a simple app to learn async with redux. I have gotten everything working, now I just want ... item.title from the store. Thanks 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 - Socket.io custom client ID

I'm making a chat app with socket.io, and I'd like to use my custom client id, instead of the default ones ... custom name for each ID? Thanks! 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 it possible to perform an asynchronous cross-domain file-upload?

It is possible! Read below. First of all, let me use this diagram to explain how asynchronous file uploads can be ... </form> Like a Boss :) 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 - Reverse sort order with Backbone.js

With Backbone.js I've got a collection set up with a comparator function. It's nicely sorting the ... descending order rather than ascending? 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 host material icons offline?

My apologies if this is a very simple question, but how do you use google material icons without a <link ... not have an internet connection 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 - NodeJS: How to get the server's port?

You often see example hello world code for Node that creates an Http Server, starts listening on a port, ... s something specific to express? See Question&Answers more detail:os...

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

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220 views

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javascript - Angular 2 Hover event

In the new Angular2 framework, does anyone know the proper way to do a hover like an event? In Angular1 there ... and haven't found anything. 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 do "module.exports" and "exports.methods" mean in NodeJS / Express?

Looking at a random source file of the express framework for NodeJS, there are two lines of the code that I ... magic words: module and exports? 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 most efficient node.js inter-process communication library/method?

We have few node.js processes that should be able to pass messages, What's the most efficient way doing ... might run on different machines See Question&Answers more detail:os...

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

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221 views

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javascript - "undefined" randomly appended in 1% of requested urls on my website since 12 june 2012

Since 12 june 2012 11:20 TU, I see very weirds errors in my varnish/apache logs. Sometimes, when an ... or have a more complete explanation? 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 - Path aliases for imports in WebStorm

I use webpack path aliases for ES6 module loading. E.g. If I define an alias for utils instead of something ... WebStorm to use such aliases? See Question&Answers more detail:os...

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

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200 views

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javascript - jQuery parent of a parent

I am currently trying to find the parent of a parent of an element. I have a link being clicked that ... like the most efficient solution. See Question&Answers more detail:os...

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

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349 views

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javascript - Google Maps: Auto close open InfoWindows?

On my site, I'm using Google Maps API v3 to place house markers on the map. The InfoWindows stay open unless you ... will be open at a time? 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 remove undefined and null values from an object using lodash?

I have a Javascript object like: var my_object = { a:undefined, b:2, c:4, d:undefined }; How ... properties? False attributes should stay. See Question&Answers more detail:os...

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

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287 views

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javascript - Handling connection loss with websockets

I've recently set-up a local WebSocket server which works fine, however I'm having a few troubles understanding ... still 'ping/pong' style? 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 difference between ES6 Map and WeakMap?

Looking this and this MDN pages it seems like the only difference between Maps and WeakMaps is a missing " ... s the difference between them? See Question&Answers more detail:os...

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

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265 views

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javascript - Difference between React Component and React Element

What is the difference between React Component and React Element? The documentation mentions both but does not go ... , other elements... See Question&Answers more detail:os...

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

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369 views

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javascript - What's the difference between String(value) vs value.toString()

Javascript has lot's of "tricks" around types and type conversions so I'm wondering if these 2 methods are ... case that makes them different? See Question&Answers more detail:os...

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

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247 views

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javascript - Phonegap Application text and layout too small

I recently build an android app using html, css, javascript and running them through phonegap to create the actual ... how its supposed to look: See Question&Answers more detail:os...

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

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305 views

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javascript - jquery: event.stopImmediatePropagation() vs return false

Is there any difference between calling event.stopImmediatePropagation() and return false inside an event handler ? See Question&Answers more detail:os...

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

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304 views

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javascript - Why is it that parseInt(8,3) == NaN and parseInt(16,3) == 1?

I'm reading this but I'm confused by what is written in the parseInt with a radix argument chapter Why is it ... 16, 3) should return NaN too See Question&Answers more detail:os...

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

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275 views

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javascript - How can I remove or replace SVG content?

I have a piece of JavaScript code which creates (using D3.js) an svg element which contains a chart. I want ... or at least replace its content? See Question&Answers more detail:os...

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

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202 views

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javascript - Passing data from Django to D3

I'm trying to write a very basic bar graph using Django and D3.js. I have an object called play with a ... headed down the worng path entirely. See Question&Answers more detail:os...

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

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728 views

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javascript - Mouse position inside autoscaled SVG

I am experiencing troubles concerning the position of mouse cursor inside my SVG document. I'd like to design a ... the mouse inside my SVG. See Question&Answers more detail:os...

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

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