Recent questions tagged javascript

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javascript - Nested JSON objects - do I have to use arrays for everything?

Is there any way to have nested objects in JSON so I don't have to make arrays out of everything? For ... me it would be gratefully 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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711 views

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javascript - Why is process.env.NODE_ENV undefined?

I'm trying to follow a tutorial on NodeJS. I don't think I missed anything but whenever I call the process. ... and where is it set initially? 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 - Reverse of JSON.stringify?

I'm stringyfing an object like {'foo': 'bar'} How can I turn the string back to an object? See Question&Answers more detail:os...

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

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251 views

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javascript - How can I insert a line break into a <Text> component in React Native?

I want to insert a new line (like , <br />) in a Text component in React Native. If I have: <text> <br ... like so: Hi~ this is a test message. See Question&Answers more detail:os...

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

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388 views

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javascript - After installation of Gulp: “no command 'gulp' found”

After installing gulp.js via npm, I receive a no command 'gulp' found error when running the gulp command ... wrong with my npm installation? See Question&Answers more detail:os...

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

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367 views

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javascript - How to find if div with specific id exists in jQuery?

I've got a function that appends a <div> to an element on click. The function gets the text of the clicked ... first part of my if statement. 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 shorten my conditional statements

I have a very long conditional statement like the following: if(test.type == 'itema' || test.type == 'itemb' ... idea on how to 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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528 views

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javascript - Converting file size in bytes to human-readable string

I'm using this function to convert a file size in bytes to a human-readable file size: function ... better way 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 publish a module written in ES6 to NPM?

I was about to publish a module to NPM, when I thought about rewriting it in ES6, to both future-proof it ... to browse/fork the original 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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239 views

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javascript - What is the difference between $routeProvider and $stateProvider?

Please explain the difference between $routeProvider and $stateProvider in AngularJS. Which is best practice? See Question&Answers more detail:os...

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

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274 views

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javascript - Storing Image Data for offline web application (client-side storage database)

I have an offline web application using appcaching. I need to provide it about 10MB - 20MB of data that it will ... when I first did this post. See Question&Answers more detail:os...

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

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271 views

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javascript - Custom exception type

Can I define custom types for user-defined exceptions in JavaScript? If so, how would I do it? See Question&Answers more detail:os...

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

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225 views

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javascript - How to check if a variable is not null?

I know that below are the two ways in JavaScript to check whether a variable is not null, but I'm confused which is ... (myVar !== null) {...} See Question&Answers more detail:os...

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

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509 views

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javascript - How to build minified and uncompressed bundle with webpack?

Here's my webpack.config.js var webpack = require("webpack"); module.exports = { entry: "./entry.js", ... like to see the uncompressed bundle.js See Question&Answers more detail:os...

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

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174 views

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javascript - "Single-page" JS websites and SEO

There are a lot of cool tools for making powerful "single-page" JavaScript websites nowadays. In my opinion, ... punished in the search results? 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

1 answer

javascript - simulate background-size:cover on <video> or <img>

How can I simulate the functionality of background-size:cover on an html element like <video> or <img>? ... background-position: center center; See Question&Answers more detail:os...

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

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492 views

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javascript - location.host vs location.hostname and cross-browser compatibility?

Which one of these is the most effective vs checking if the user agent is accessing via the correct domain. We ... the others it will exist? See Question&Answers more detail:os...

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

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448 views

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javascript - Why Is `Export Default Const` invalid?

I see that the following is fine: const Tab = connect( mapState, mapDispatch )( Tabs ); export default Tab; ... is presumed a const or such? See Question&Answers more detail:os...

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

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280 views

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javascript - Defining a HTML template to append using JQuery

I have got an array which I am looping through. Every time a condition is true, I want to append a copy of the ... / APPENDING CODE HERE }); }); See Question&Answers more detail:os...

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

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197 views

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javascript - Redux - multiple stores, why not?

As a note: I've read the docs for Redux (Baobab, too), and I've done a fair share of Googling & testing ... in production for a few months now. See Question&Answers more detail:os...

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

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267 views

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javascript - Difference between ?:, ?! and ?=

I searched for the meaning of these expressions but couldn't understand the exact difference between them. This is what they ... [a-zA-Z0-9]+)* See Question&Answers more detail:os...

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

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240 views

1 answer

javascript - VIM + JSLint?

I spend my days in vim, currently writing a lot of JavaScript. I've been trying to find a way to ... unfortunately the output is very crude. See Question&Answers more detail:os...

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

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229 views

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javascript - Where to put model data and behaviour? [tl; dr; Use Services]

I am working with AngularJS for my latest project. In the documentation and tutorials all model data is ... following AngularJS best practices? See Question&Answers more detail:os...

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

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314 views

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javascript - Angular JS: What is the need of the directive’s link function when we already had directive’s controller with scope?

I need to perform some operations on scope and the template. It seems that I can do that in either the ... , when we already had controller? 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 - AngularJS: Understanding design pattern

In the context of this post by Igor Minar, lead of AngularJS: MVC vs MVVM vs MVP. What a controversial ... pattern in client-side applications? See Question&Answers more detail:os...

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

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215 views

1 answer

javascript - How is AngularJS different from jQuery

I only know one js library and that is jQuery. But my other coders in the group are changing AngularJS as ... use jQuery stuff with AngularJS? See Question&Answers more detail:os...

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

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252 views

1 answer

javascript - How to pass JS variable to php?

I have a javascript functions which returns a hash. I need to pass this hash to php to do stuff with it. Whats the best way to do that? See Question&Answers more detail:os...

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

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233 views

1 answer

javascript - How can i load a set number of rows from a table on pageload and only load further rows when the user loads them?

I have a table using DataTables , it contains a large number of rows and so this causes the page to load very ... php. How can i acheive 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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