frontend

nodemon command is not recognized in terminal for node js server

由 时光总嘲笑我的痴心妄想 提交于 2019-11-29 22:43:08
I am doing node.js server setup from https://scotch.io/tutorials/authenticate-a-node-js-api-with-json-web-tokens . I am new in node.js. I am installing npm install nodemon --save . But when I am run the server with this nodemon server.js . In the terminal showing: nodemon is not recognized as internal or external command, operable program or batch file node server.js command is working and started the server, But nodemon command is not working. I am set up the node js server from https://scotch.io/tutorials/authenticate-a-node-js-api-with-json-web-tokens video. I don't know why it is not

How do you play a sound on the web browser?

由 扶醉桌前 提交于 2019-11-29 22:38:40
问题 How do I play a sound on the web browser as notification? 回答1: You can use the <audio> tag combined with JavaScript to play sounds at a given time. You'll need JavaScript, of course, as it's done on the frontend, and hence, with client-side programming. For example, <audio style="display: none;" id="notification" preload src="path/to/soundfile"> Then, for the scripting, place this somewhere in any part of your script that requires sound notification to occur: document.getElementById(

Is there a way around using [[ and ]] for Part in Mathematica?

由 我们两清 提交于 2019-11-29 21:03:51
Is there a way to avoid having to do ⋮[[⋮ to obtain those great looking brackets for Part ? Is there a way for this to be done automatically after you ran a function or a definition ? abcd I have the following addition in /Applications/Mathematica.app/SystemFiles/FrontEnd/TextResources/Macintosh/KeyEventTranslations.tr which lets me enter double brackets with key combinations. You can do the same by modifying the file (where ever it is on your OS). I first learnt of this from Szabolcs's website here . He has other mathematica related stuff there that might be of help to you. The commands added

What is the difference between a regular Rails app and a Rails API?

由 孤街醉人 提交于 2019-11-29 20:02:23
问题 In the process of learning Rails, I read about how we could combine it with some front-end MV* JavaScript frameworks — such as Backbone.js, Angular.js, or Ember.js — to improve the UX. This introduced (to me) the concept of using Rails as an API, instead of a web app. So, now, I am pretty confused: what is the difference between a regular Rails app and a Rails API? 回答1: A regular Rails app will use the rails views (erb or haml) to render pages directly. That is to say, it will process the

Using reactjs with requirejs

由 自闭症网瘾萝莉.ら 提交于 2019-11-29 18:45:49
Recently, I started using reactjs along with a backbonejs router to build an application. I usually use use requirejs for dependency and code management. But, problem arises when I try to include files that contain jsx syntax. This is what I have so far as my router.js : define(["backbone", "react"], function(Backbone, React) { var IndexComponent = React.createClass({ render : function() { return ( <div> Some Stuff goes here </div> ); } }); return Backbone.Router.extend({ routes : { "": "index" }, index : function() { React.renderComponent(<IndexComponent />, document.getElementById('index'));

Unable to run project on android emulator but works with Iphone

由 无人久伴 提交于 2019-11-29 17:23:12
I have been having an issue running my project on the android emulator, I have had several problems and currently, I am facing this: I have had several problems before getting to thhis one where I have to change classpath 'com.android.tools.build:gradle:3.3.0' and distributionUrl=https://services.gradle.org/distributions/gradle-4.10.1-all.zip but this new error still persists. If there is any additional information required to solve this please do ask. Thanks What went wrong: A problem occurred evaluating project ':expo-react-native-adapter'. Project with path ':expo-core' could not be found

Is the web browser performance rule “only 2 requests in parallel per hostname” still correct?

由 こ雲淡風輕ζ 提交于 2019-11-29 16:07:32
In his book "High Performance Websites" Steve Souders wrote (2007) that browsers limit parallel requests to a domain/hostname to two at a time. Is this still valid today? Almost incorrect today. Most browsers have upgraded to 6 parallel connections. See Steve Souder's Browserscope > Network tab > Connections per Hostname . Older browsers still restrict to 2 connections - that may or may not be relevant to you depending on the browsers your application supports. Firefox bumped up its maximum per-server connection count from 8 to 15 for Firefox 3 and later. The maximum is less for servers that

Is there a way to autosave on each keystroke in sublime?

由 杀马特。学长 韩版系。学妹 提交于 2019-11-29 15:22:17
问题 I would like sublime to save my file on each key stroke, for live reload purposes. The neatest action would be to autosave on each keystroke, only if the file has valid syntax. If compass task was fast enough it would be like working directly in chrome inspector. 回答1: You could write a plugin that saves the file using the on_modified listener. Something like the following may work (note untested) import sublime_plugin class SaveOnModifiedListener(sublime_plugin.EventListener): def on_modified

jQuery Scroll to Next Div Class with Next / Previous Button

由 亡梦爱人 提交于 2019-11-29 14:24:26
问题 What I'd like is for the fixed navigation, with NEXT and PREV buttons to basically scroll the page to the next div with the class of "section". I've setup jQuery to essentially add a click function to the NEXT and PREV hrefs. This click function will then use ScrollTop to move to the next duv with a class of .section. Here is the jQuery: $('div.section').first(); // binds a click event-handler to a elements whose class='display' $('a.display').on('click', function(e) { // prevents the default

import owl.carousel from webpack

由 一世执手 提交于 2019-11-29 10:53:54
I am new to the F2E world. I just created a web application using create-react-app. ( https://github.com/facebookincubator/create-react-app ) I wanted to import owl.carousel into my projects, so that I followed the guide of NPM ( https://www.npmjs.com/package/owl.carousel ) ,which of the syntax is: import $ from 'jquery'; import 'imports?jQuery=jquery!owl.carousel'; but the debugger console indicated the error : Unexpected '!' in 'imports?jQuery=jquery!owl.carousel'. Do not use import syntax to configure webpack loaders import/no-webpack-loader-syntax I tried another syntax: import owlCarousel
订阅 frontend