js | A review of many of the building blocks of JavaScript | Script Programming library
kandi X-RAY | js Summary
kandi X-RAY | js Summary
A review of many of the building blocks of JavaScript. Although ECMAScript 2015 (ES2015) is the latest standard, adopted in June of 2015, we'll mostly focus on features from the ES5 standard. Some of the references in this document may include descriptions of ES2015 features. These features will usually be denoted with (new in ECMAScript 2015) in the main text or with a flask icon in the navigation sidebar. let and const are the primary ES2015 features introduced in this training. In order to to use these features, we'll need to be in strict mode.
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QUESTION
I am working on a React Web Application Where I fetch and display student data from an API and I keep getting the error,
Warning: Each child in a list should have a unique "key" prop. Check the render method of Accordion
Accordion.js being one of my components of my Web Application
Any Help to fix this issue would be appreciated :)
I have tried passing a key prop with an id to the Accordion component from a parent component, but that did not seem to work. Could it be that I need to pass a key in my test score paragraph?
...ANSWER
Answered 2021-Jun-15 at 23:21On line 23
Make the following change
QUESTION
I've come across an issue of trying to fade the edges of the background image of a div so that it looks like it's blending with the background image of the full site (so the background image applied to the body).
...ANSWER
Answered 2021-Jun-16 at 02:49You can use the background as gradient where the edges are rgba(0,0,0,0). This way it will smoothly blend with background. But this will not work for images. For images You will have to a div of background color and rgba(0,0,0,0) in gradient with color facing outward.
QUESTION
I wanted to insert my data to a specific sheet name based on form input value of "svdate":
...ANSWER
Answered 2021-Jun-16 at 02:12I thought that in your situation, it is required to retrieve 6/17
from 06/17/2021
. For this, how about the following modification?
In this case, please modify doPost
as follows.
QUESTION
I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);
.
ANSWER
Answered 2021-Jun-16 at 03:07I had used document.getElementById('1').contentWindow.jQuery('#left').jstree(true);
to get instance from iframe with id='1'. In order to listen to right iframe(with id='2') if any menu has been clicked, I used document.getElementById('2').contentWindow.jQuery('#right').on("changed.jstree",function(e,data){})
. I get the instance of left iframe within this function. By using this instance, I has deselect previous selection, select current selection, and open children of selected menu.
index-12.html
QUESTION
I am running the following in my React app and when I open the console in Chrome, it is printing the response.data[0] twice in the console. What is causing this?
...ANSWER
Answered 2021-Jun-16 at 02:48You have included fetching function in the component as it is, so it fires every time component being rendered. You better to include fetching data in useEffect hook just like this:
QUESTION
I built an app using Django 3.2.3., but when I try to settup my javascript code for the HTML, it doesn't work. I have read this post Django Static Files Development and follow the instructions, but it doesn't resolve my issue.
Also I couldn't find TEMPLATE_CONTEXT_PROCESSORS
, according to this post no TEMPLATE_CONTEXT_PROCESSORS in django, from 1.7 Django and later, TEMPLATE_CONTEXT_PROCESSORS
is the same as TEMPLATE
to config django.core.context_processors.static
but when I paste that code, turns in error saying django.core.context_processors.static
doesn't exist.
I don't have idea why my javascript' script isn't working.
The configurations are the followings
Settings.py
...ANSWER
Answered 2021-Jun-15 at 18:56Run ‘python manage.py collectstatic’ and try again.
The way you handle static wrong, remove the static dirs in your INSTALLED_APPS out of STATIC_DIRS and set a STATIC_ROOT then collectstatic again.
Add the following as django documentation to your urls.py
QUESTION
I am trying to use next-firebase-auth package to manage authentication in my next js app. Before messing around, I wanted to run the example. However, I could not find proper explanation for the fields required in the .env file.
Could you please explain what should be the values of following fields in local.env
file here
- COOKIE_SECRET_CURRENT
- COOKIE_SECRET_PREVIOUS
- NEXT_PUBLIC_FIREBASE_PUBLIC_API_KEY
The last one I guess is the Web API key
shown on the config page. Not sure, please confirm.
ANSWER
Answered 2021-Jun-15 at 12:34The next-fire-base-auth config documentation links to the cookies package. Under the cookies example, I found:
QUESTION
I'm trying to decrease the bundle size of my Vue project, which scaffolded by the vue-cli, by using CDN of firebase, Vue, and Vuetify.
So, I've added links of these CDN in public/index.html
as follow:
ANSWER
Answered 2021-Jun-16 at 01:31If you are using vuetify from vue-cli-plugin-vuetify
(vue add vuetify
), treeshaking and auto component import is enabled by default, by using vuetify-loader
.
If you look into the source code of vue-cli-plugin-vuetify
, it only uses vuetify-loader
if it is present in your package.json
. So removing vuetify-loader
from package.json
should disable this behavior.
QUESTION
ANSWER
Answered 2021-Jun-16 at 01:14The difference in behaviour can be accounted for by this behaviour, described in (for instance) the following note in ECMAScript 2022 Language Specification sect 14.3.2.1
:
NOTE: If a VariableDeclaration is nested within a with statement and the BindingIdentifier in the VariableDeclaration is the same as a property name of the binding object of the with statement's object Environment Record, then step 5 will assign value to the property instead of assigning to the VariableEnvironment binding of the Identifier.
In the first case:
QUESTION
I am trying to use dotenv and jest together, and run into an error immediately.
A single test file, tests/authenticationt.test.ts
with only
ANSWER
Answered 2021-Jun-16 at 00:40try require('dotenv').config()
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