learn-redux | Comprehensive Notes for Learning Redux | State Container library
kandi X-RAY | learn-redux Summary
kandi X-RAY | learn-redux Summary
Redux simplifies writing well-structured, predictable, testable & maintainable JavaScript Web Applications.
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QUESTION
I initialize my constant index
variable (inside of case
code block) by expression that returns 2
. But I see index
value is undefined
... How it possible?
I created this project through create-react-app
command and clear all JS and CSS files in the src
subdirectory.
I published code sources of my example here: https://github.com/Andrey-Bushman/i-learn-redux (You can run the project by npm start
or yarn start
command).
Console output:
The findIndex
is native function:
ANSWER
Answered 2018-Oct-28 at 12:43This is a bug in Chrome DevTools. index
does have the value 2
- you will notice this if you console.log(index)
. It looks like Chrome DevTools has a problem with the index
variable being defined twice in this function.
If you rename one occurrence, Chrome DevTools displays the correct value.
Also, in Local
you will see another variable _index
which has the correct value.
QUESTION
So, I'm running an SPA (https://learn-redux.firebaseapp.com) which obtains all of its data from an Apollo/GraphCool endpoint, and utilises the offline-plugin for offline functionality.
When the network is set to 'offline' the application fails to display the data that was prviously display, and instead issues the following (See attached image):
POST https://api.graph.cool/simple/v1/projID net::ERR_INTERNET_DISCONNECTED
Is it possible for offline-plugin to cache all retrieved Graphcool data, so that the app is still usable in offline mode?
My webpack.config file is as follows:
...ANSWER
Answered 2017-Sep-24 at 21:54apollo-offline addresses the question posed.
QUESTION
OS: Windows 10 Pro
webpack: 1.14.0
So, when I start my server (npm start), the following code:
...ANSWER
Answered 2017-May-22 at 22:11You need to give the Webpack process access to the NODE_ENV
variable.
Windows:
"build:webpack": "set NODE_ENV=production&& webpack --config webpack.config.prod.js",
MacOs/Linux:
"build:webpack": "export NODE_ENV=production && webpack --config webpack.config.prod.js",
QUESTION
So, I'm having an issue when attempting to create an Apollo/GraphCool subscription, which is throwing up the following error message:
...ANSWER
Answered 2017-Apr-25 at 10:00What you are overlooking here is the fact that you are mixing the es6 and es5 syntax of using react.
In the ES5 syntax this is how you create components -> const Comments = React.createClass
Here you do not need to define a constructor. createClass
does that for you.
In the ES6 syntax, this is how you create components -> class Comments extends React.Component
And here you have to define your own constructor.
What you can do is either switch to the new syntax completely or do this.subscription = this.subscribe();
in a lifecycle method like componentWillMount
or componentDidMount
.
QUESTION
SOLVED: I'D ADDED YARN TO THE FILE. I DELETED IT AND THE MODULES THEN REDID NPM INSTALL AND IT WORKED... not exactly sure what happened there, but that seemed to do it.
EDIT: SO IT TURNS OUT THE STRING INTERPOLATION IS NOT RELATED (using single quotes instead of back ticks - face palm) BUT THE ISSUE WITH THE CASE STATEMENT NOT BEING ABLE TO BE EVALUATED IS STILL AT LARGE.
So I'm doing Wes Bos' Redux Course, which is pretty cool and I like it so far even if it is A LOT to take in very quickly.
There have been some very few things I needed to update here and there in order to get it to work. (Such as this line in my main component, without which Hot Reloading wasn't working at all: module.hot.accept() , but which wasn't in his files)
I'm also extending the React.Component rather than using .createClass to try and be more current. Otherwise my files are by and large exactly the same as his files linked above.
I'm up to about the 13th video and I've got a problem that has stopped me completely, which I can't get past, which I only have an probably wrong idea about, but I'm hoping someone can help.
Firstly, I think this other more trivial problem may be related, my components will not do string interpolation as his will:
...ANSWER
Answered 2017-Feb-21 at 18:52Looks like your code is not using backticks go from this:
QUESTION
I'm trying to get to grips with Redux + React - I have hooked up the relevant bits of Redux with connect()
for a small todo app but I cannot for the life of me get the component to update and show the reflected store changes. The store state does update however the component will not. Here are the relevant bits in my code:
actionTypes.js
...ANSWER
Answered 2017-Feb-19 at 19:31You're passing todo
to your component and while the todo
object gets updated the actual todo
object in redux state is the same exact object as it was before. So react does not see the object as changed. For example:
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