Recent questions tagged Javascript

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javascript - When should I add Redux to a React app?

I'm currently learning React and I am trying to figure out how to use it with Redux for building a mobile app. ... with what I've already done. 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 - Using node-inspector with Grunt tasks

Does someone used node-inspector with Grunt for application debugging? If not, Can you recommend a debugging ... execute tasks separately). 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 terminate script execution when debugging in Google Chrome?

When stepping through JavaScript code in Google Chrome debugger, how do I terminate script execution if I do not ... 's answer for details. 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 - Access props inside quotes in React JSX

In JSX, how do you reference a value from props from inside a quoted attribute value? For example: <img ... images/{this.props.image}"> 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 better way to create an object-oriented class with jQuery?

I use the jQuery extend function to extend a class prototype. For example: MyWidget = function(name_var) { ... one statement instead of two? 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 - Remove an item from array using UnderscoreJS

Say I have this code var arr = [{id:1,name:'a'},{id:2,name:'b'},{id:3,name:'c'}]; ... something using underscore or something like that? 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 - React - What is the best way to handle login and authentication?

New to react and working on an application with authentication/logging in. It currently works but feels ... correct login/password combination. 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 - Implement a loading indicator for a jQuery AJAX call

I have a Bootstrap modal which is launched from a link. For about 3 seconds it just sits there blank, while the AJAX ... .empty(); }); </script> 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 programmatically calculate the contrast ratio between two colors?

Pretty straight-forward, take yellow and white: back_color = {r:255,g:255,b:255}; //white text_color = {r:255 ... as the text can still be read. 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 show SVG file on React Native?

I want to show svg files (I have bunch of svg images) but the thing I couldn't find the way to show. ... way (with/without react-native-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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417 views

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javascript - QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded the quota

Using LocalStorage on iPhone with iOS 7 throws this error. I've been looking around for a resolvant, but ... setItem() function to save. 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 set DOM element as the first child?

I have element E and I'm appending some elements to it. All of a sudden, I find out that the next element ... sure that there is a prettier way. See Question&Answers more detail:os...

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

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183 views

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javascript - Angular against Asp.Net WebApi, implement CSRF on the server

I'm implementing a website in Angular.js, which is hitting an ASP.NET WebAPI backend. Angular.js has some ... ) problems with that approach? See Question&Answers more detail:os...

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

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129 views

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javascript - Big list performance with React

I am in the process of implementing a filterable list with React. The structure of the list is as shown in the ... want to re-invent the wheel. See Question&Answers more detail:os...

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

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307 views

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javascript - ReactJS server-side rendering vs client-side rendering

I just have began to study ReactJS and found that it gives you 2 ways to render pages: server-side and ... side that was already pre-rendered? See Question&Answers more detail:os...

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

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182 views

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javascript - Server polling with AngularJS

I'm trying to learn AngularJS. My first attempt to get new data every second worked: 'use strict'; function ... make the second approach 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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162 views

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javascript - How to add jQuery in JS file

I have some code specific to sorting tables. Since the code is common in most pages I want to make a JS file ... is the best 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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221 views

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javascript - How to generate unique ID with node.js

function generate(count) { var founded = false, _sym = 'abcdefghijklmnopqrstuvwxyz1234567890', str = ''; while(!founded) { ... How I can 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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155 views

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javascript - jQuery first child of "this"

I'm trying to pass "this" from a clicked span to a jQuery function that can then execute jQuery on that ... the :first-child of element? See Question&Answers more detail:os...

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

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210 views

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javascript - How to run a single test with Mocha?

I use Mocha to test my JavaScript stuff. My test file contains 5 tests. Is that possible to run a specific test ... all the tests in the file? See Question&Answers more detail:os...

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

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121 views

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javascript - AngularJS client MVC pattern?

Until now I was mainly using Struts 2, Spring, JQuery technology stack for building web applications. The ... already done same transition. 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 - The most accurate way to check JS object's type?

The typeof operator doesn't really help us to find the real type of an object. I've already seen the ... of checking the object's type? See Question&Answers more detail:os...

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

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284 views

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javascript - How to get access to webpack-dev-server from devices in local network?

There is some webpack dev server config (it's part of the whole config): config.devServer = { contentBase: './' ... How can I enable it? 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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158 views

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javascript - Can I use CoffeeScript instead of JS for node.js?

What are my restrictions if I want to code node.js and use CoffeeScript? Can I do anything I'd be able to do in 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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421 views

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javascript - Difference between res.send and res.json in Express.js

What is actual difference between res.send and res.json as both seems to perform same operation of responding to client. See Question&Answers more detail:os...

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

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404 views

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javascript - Nested Models in Backbone.js, how to approach

I've got the following JSON provided from a server. With this, I want to create a model with a nested model. I am ... .get('layout') ); } }); See Question&Answers more detail:os...

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

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459 views

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javascript - How do I use Node.js Crypto to create a HMAC-SHA1 hash?

I want to create a hash of I love cupcakes (signed with the key abcdeg) How can I create that hash, using Node.js Crypto? See Question&Answers more detail:os...

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

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198 views

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javascript - What is the difference between .map, .every, and .forEach?

I've always wondered what the difference between them were. They all seem to do the same thing... See Question&Answers more detail:os...

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

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