Recent questions tagged Javascript

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javascript - How to turn off caching on Firefox?

During development I have to "clear cache" in Firefox all the time in order to make it use the latest version of ... , if not, for all files? 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 the value of an input field using ReactJS?

I have the following React component: export default class MyComponent extends React.Component { onSubmit(e) { e. ... wrong with this code? 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 - When to prefer JSON over XML?

My requirement is just to display a set of values retrieved from database on a spread. I am using jquery. 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 convert Set to Array?

Set seems like a nice way to create Arrays with guaranteed unique elements, but it does not expose any good way to ... for...of, or similar ? 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 bundle vendor scripts separately and require them as needed with Webpack?

I'm trying to do something that I believe should be possible, but I really can't understand how to do it just ... ones should I use. 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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253 views

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javascript - Customizing the template within a Directive

I have a form that is using markup from Bootstrap, like the following: <form class="form-horizontal"> <fieldset> < ... at a loss where to start. See Question&Answers more detail:os...

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

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290 views

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javascript - What's the difference between a continuation and a callback?

I've been browsing all over the web in search of enlightenment about continuations, and it's mind boggling how the ... { return x + y; } See Question&Answers more detail:os...

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

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403 views

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javascript - What is the difference between `throw new Error` and `throw someObject`?

I want to write a common error handler which will catch custom errors thrown on purpose at any instance of ... the above two mentioned methods? See Question&Answers more detail:os...

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

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536 views

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javascript - Can I run HTML files directly from GitHub, instead of just viewing their source?

If I have a .html file in a GitHub repository, e.g. for running a a set of JavaScript tests, is there any ... type from text/plain to text/html. 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 - Why es6 react component works only with "export default"?

This component does work: export class Template extends React.Component { render() { return ( <div> component ... without sign "default"? See Question&Answers more detail:os...

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

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301 views

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javascript - What exactly is Hot Module Replacement in Webpack?

I've read a few pages about Hot Module Replacement in Webpack. There's even a sample app that uses it. I ... and what does HMR already provide? See Question&Answers more detail:os...

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

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339 views

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javascript - Difference between Grunt, NPM and Bower ( package.json vs bower.json )

I'm new to using npm and bower, building my first app in emberjs :). I do have a bit of ... from installing command line tools globally)? See Question&Answers more detail:os...

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

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542 views

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javascript - Discord.js Bot Welcomes Member, Assign a Role and send them a DM

So When A New Member Joins The Guild [the discord server]. The Bot Should Send A Message In a ... ReferenceError: message is not defined See Question&Answers more detail:os...

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

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279 views

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javascript - HTML Alignment Issue in one machine only (both IE8)

I have the following HTML and CSS code. It works fine in IE8 in one machine; but misaligns in second machine ... : Align contents inside a 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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464 views

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javascript - Watch for Dynamically Added Class

Is there a listener where I can watch and run code if a class is dynamically added to an element? I'm on ... () but not having any luck. See Question&Answers more detail:os...

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

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374 views

1 answer

javascript - How to get data from firestore DB in outside of onSnapshot

Result undefined when I try to get value from firestore and put to a variable, but works in console. My ... //not working. Display undefined See Question&Answers more detail:os...

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

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269 views

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javascript regex split produces too many items

I'm trying to split a string using either commas or whitespace. A comma can optionally be preceded and/or ... wrong will be appreciated. Phillip See Question&Answers more detail:os...

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

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249 views

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javascript - Pseudo-classical inheritance with privacy?

In JavaScript: The Good Parts, Crockford argues that one of the downsides of using the pseudo-classical pattern of ... ? Is this even possible? See Question&Answers more detail:os...

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

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324 views

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javascript - Geojson map with D3 only rendering a single path in a feature collection

I'm trying to draw a geojson map of some regions of Colombia. Currently it only shows a single path: ... .co/edit/kSDtyyoWr9TSEDZ5Letv?p=preview See Question&Answers more detail:os...

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

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336 views

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javascript - Open IE browser in Firefox/Chrome page

Our Web application is based on IE9, which means only IE9 can open the pages in our site. We'll prevent ... IE browser in Firefox/Chrome page. See Question&Answers more detail:os...

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

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295 views

1 answer

javascript - Chrome Extension - Passing object from page to context script

I'm writing a chrome extension and I'm struggling to pass an object back from the main page to the ... help would 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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264 views

1 answer

javascript - Why does String.match( / d*/ ) return an empty string?

Can someone help me to understand why using d* returns an array containing an empty string, whereas using d+ returns ["100 ... (regex)); // [""] See Question&Answers more detail:os...

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

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493 views

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javascript - Setting value of Observable not updating in Knockout

(There are a ton of questions every day that link back to why can't I set the value of my observable ... item into my Knockout observable array? See Question&Answers more detail:os...

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

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541 views

1 answer

javascript - Pass props from child to parent react navigation

I am using react-navigation. I am passing propsfrom a react-native component to the modal from react-navigation ... only called from 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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395 views

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javascript - window.focus(), self.focus() not working in firefox

Hi all i am developing a chat application ... i have multiple chat windows ... i want to know which windw ... above code is in the same html See Question&Answers more detail:os...

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

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590 views

1 answer

javascript - Convert numbers to letters beyond the 26 character alphabet

I'm creating some client side functions for a mappable spreadsheet export feature. I'm using jQuery to manage ... dynamic way to generate 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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319 views

1 answer

javascript - How do you limit options selected in a html select box?

I'm using a select tag in a form I'm making that allows multiple selections, but I want to make the ... or jquery? 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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440 views

1 answer

javascript - Synchronized scrolling using jQuery?

I am trying to implement synchronized scrolling for two DIV with the following code. DEMO $(document).ready( ... would 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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