Vue & Capacitor

Build native mobile apps with web technology and Vue

https://capacitorjs.com/solution/vue

Vue.js devtools

Chrome and Firefox DevTools extension for debugging Vue.js applications.

https://chrome.google.com/webstore/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd

Изучение Vue.js в 2022 году: дорожная карта разработчика

Изучение Vue.js стоит начать с того, что это популярный JavaScript-фреймворк для создания пользовательских интерфейсов. Ядро Vue включает в себя библиотеку ядра, маршрутизатор и Vuex, а сам фреймворк пригоден для постепенного внедрения, в отличие от аналогов-монолитов

https://tproger.ru/articles/izuchenie-vue-js-v-2021-godu-dorozhnaja-karta-razrabotchika/amp/

Vue.js - экспресс курс по изучению Vue.js за 50 минут

https://youtu.be/OlnwgS-gk8Y

‍Как мы ускоряли комментарии Хабра

https://habr.com/ru/post/590111/?utm_campaign=590111&utm_source=habrahabr&utm_medium=rss
Комментарии на Хабре иногда несут больше пользы, чем сама статья. Поэтому при переходе на новую версию сайта было важно сделать работу с комментами не хуже, чем было.



Вы когда-нибудь открывали в старом дизайне Хабра пост с большим числом комментариев? Страничка даже с тысячей сообщений грузится шустро, на ней без серьёзных задержек работает форма для ответа, кнопки голосования и закладок. Но когда мы начали переход на новую версию Хабра, стало понятно, что добиться такой же скорости будет непросто.



Этому есть несколько причин. Во-первых, Хабр стал одностраничным приложением (SPA, Single Page Application) на Vue, то есть теперь переходы между страницами рисуются на клиенте с помощью JS вместо классического серверного рендеринга (Server-Side Rendering, SSR). Такие SPA-страницы отображаются быстрее на современных устройствах, но на старых девайсах могут тормозить.



Во-вторых, движок старого Хабра — это больше десяти лет оптимизаций, костылей и заплаток. Вполне естественно, что если попытаться переписать их с нуля на современных технологиях, придётся учесть эту историю поиска и устранения бутылочных горлышек в производительности.



В октябре мы постепенно выкатывали на часть пользователей обновлённую версию комментариев, над которой трудились последние полгода. Наши новые комментарии должны рендериться быстрее и доставлять удовольствие всем, а не только обладателям топовых MacBook Pro c M1 Max.



Давайте посмотрим, как работали комментарии полгода назад, до того, как мы начали работу по оптимизации.
Читать дальше →

A Tic Tac Toe Game Written in Vue 3 And Javascript

https://vuejsexamples.com/a-tic-tac-toe-game-written-in-vue-3-and-javascript/
A Tic Tac Toe Game Written in Vue 3 And Javascript

Computed Properties in React vs. Vue

https://medium.com/@shore.jeremiah/computed-properties-in-react-vs-vue-f942e4c763ea?source=rss------vuejs-5
As a software engineer familiar with front-end JavaScript frameworks like React and Vue, you may have a preference for the idioms and…Continue reading on Medium »

Looking at the new v-memo directive in Vue 3.2

https://dev.to/reegodev/looking-at-the-new-v-memo-directive-in-vue-32-5d6d
The release of Vue 3.2 introduced some new functionalities, mainly related to performance and optimisations. One of these features is a new directive called v-memo



What is v-memo?

v-memo, as the name suggests, is a new directive related to the memoization of parts of a template.

If you are not familiar with the term "memoization", wikipedia describes it as:

In computing, memoization or memoisation is an optimization technique used primarily to speed up computer programs by storing the results of expensive function calls and returning the cached result when the same inputs occur again

In Vue this description sounds really like what computed properties already do.

In fact v-memo can be seen as a computed property for parts of a template!



Using v-memo

v-memo accepts a single parameter, which should be an array of dependencies. The element that uses this directive and all its descendants will only be re-rendered when one of the dependencies change.

For example:



<div v-memo="[dep1, dep2]">
...
</div>


Note that if you don't provide dependencies , ie:v-memo="[]", you obtain the same functionality as v-once.



Examples

Since v-memo is mainly useful for performance reasons, one of the best scenarios where you'd want to use it is when rendering huge lists of items with v-for:



<div v-for="item in list" :key="item.id" v-memo="[item.id === selected]">
<p>ID: {{ item.id }} - selected: {{ item.id === selected }}</p>
</div>


In this example we are telling v-memo to only re-render an item if it has been selected or deselected, all other items will be skipped entirely.

We don't need to include item.id in the dependency array since the sub-template of every item is already keyed, so it generates a separate sub-tree.

Another thing to keep in mind is that v-memo is only useful in a v-for if you are using some kind of interpolation. If for example you are rendering a list of components like <MyComponent v-for="item in list" :key="item.id" v-memo />, you are not going to benefit from v-memo as the diffing is made inside each component.
I've prepared an example on StackBlitz that shows visually how v-memo helps with performance in lists: https://stackblitz.com/edit/vue-v-memo

External PR for Release 0.3

https://dev.to/irenejoeunpark/external-pr-for-release-03-48a0

TIL about specific Array combination types

https://dev.to/vanquard/til-about-specific-array-combination-types-28bo
Okay, so its not actually called "specific Array combination types", but that was the best description I had for it, before I looked it up.

Its actually called "Tuple Types" and the documentation can be found here: https://www.tutorialsteacher.com/typescript/typescript-tuple
I'll come back to why this blew my mind today, but first, lets scroll back a bit, to some of my first steps into JS/TS programming. I started my programming career in Java, and one of the things that annoyed the hell out of me, was the fact that I could only have 1 object returned from a function (This was before the Pair class was introduced).
But in JS we can easily just return an array with 2 values:



const someFunction = () => {
return ['Mathias', 28];
}


And combined with some destructuring on the recieving, it was all nice and easy:



const [myName, myAge] = someFunction();





Adding types

Until today I never had to add types onto a scenario like this, usually when I work with arrays, I either just do a basic string[], or when its required in complex object scenarios: Array<{name: string, age: number}>.

But with the tuples we can actually avoid naming them and just say the return type for our function is [string, number]:



const someFunction = (): [string, number] => {
return ['Mathias', 28];
}





Vue relation

I came across this when I working with Vue2 combined with TS, and was trying to create a v-for loop over a Map, but Vue2 did not support this, so I had to come up with a different approach that supported the same end goal.
So this is where the new tuples came in handy! Given an example with some data in a Map:



const map = new Map<string, object>();
map.set('key1', {data: 'lots of data'});
map.set('key2', {data: 'more data'});


I could then destructure it into an array like so:



const asArray = ...map.entries();
// Yielding:
[
['key1', {data: 'lots of data'}],
['key2', {data: 'more data'}],
]


And in order to Type this we now have:



const asArray: Array<[string, object]> = ...map.entries();


Thank you for reading this far, hope you gained something from this post.

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VueJS: The Minimum Vars to Use a Component

https://paulxiong.medium.com/vuejs-the-minimum-vars-to-use-a-component-1e3ea89430ff?source=rss------vuejs-5
Div class name, component name, import name, export name, … all those confused me when I was studying Vue.JSContinue reading on Medium »

DAY 01 - 100 Days With Vue

https://dev.to/tahsin52225/day-01-100-days-with-vue-22fb
At last, I have started to learn Vue.js. Well, starting is the hard part of learning. Today I have learned about how to integrate Vue CDN and add Vue property to your project.

It's simple just add Vue CDN at the end of your Html file. Vue is ready for use.



Vue CDN


<script src="https://unpkg.com/vue@next" defer></script>





Adding Vue property in a particular HTML section

In your app.js (External JS file) file you have to create a Vue app and mount it into a particular section. Well you can use a variable to declare the Vue app



const app = Vue.createApp({});


To add this Vue app into your HTML code you need to use the mount function to this object. Mount accepts a string value of a CSS selector in which this Vue code applies. Here we have a section that has an id named #user-goal



const app = Vue.createApp({});
app.mount('#user-goal');


Nice ! Vue is mounted on that section



"data" property of Vue object

"data" is a predefined property of the Vue object which holds all the variables of the Vue app. "data" property always returns an object which holds a collection of variable names and values in a key-value pair. the variable value can be anything String, Number

, Boolean etc.



const app = Vue.createApp({
data(){
return {
variable_name : "variable_value"
}
}
});
app.mount('#user-goal');





"Interpolations" Showing data property value

"Interpolations" is a fancy name of handlebars, if you want to show your variable value into HTML. Just use double curly braces and write the variable name which you had declared on the data property.



<p>{{ variable_name }}</p>


"Interpolations" tells Vue to replace the variable name with the actual value of it. so you can't use "Interpolations" outside Vue mounted section.



"v-bind" attribute of Vue

Well, sometimes we need to pass value to Html attribute. For example, let's say you want to return a link to an anchor tag 'href' attribute, but if you use "Interpolations" it won't work. You need to use the "v-bind" attribute for that.

"v-bind" is a Vue attribute that helps to bind any Html attribute to Vue variables. Example :



<p> <a v-bind:href="variable_name">Link </a></p>


P.S: There are more uses of v-bind and we can use the shorter version of v-bind, But for now, let's stick with this.



"v-html" attribute of Vue

Now let's say you want to show an Html code using a variable. If you use only "Interpolations" it will show markup value and won't fulfill the purpose. For that, you need to use v-html attribute.

Example:

In app.js



const app = Vue.createApp({
data(){
return {
variable_name : "<h1> Hello this is value </h1>"
}
}
});
app.mount('#user-goal');


In index.html



<p v-html="variable_name"></p>





"methods" property of Vue object

Till now, we have used only static data. We need to add some dynamic feel to it. To do this, we need to use the "methods" property of the Vue object. "methods" is a predefined property that accepts only JS objects that hold the collection of functions.



const app = Vue.createApp({
data(){
return {
variable_name : "<h1> Hello this is value </h1>"
}
},
methods: {
function_name: function () {
//do something
}
}
});
app.mount('#user-goal');


We can use direct methods in "Interpolations"

In index.html



<p> {{ function_name() }}</p>





Use "data" property into "methods"

Basically we need to use variable into methods for that we just need to use "$this" keyword.



const app = Vue.createApp({
data(){
return {
variable_name : "<h1> Hello this is value </h1>"
}
},
methods: {
function_name: function () {
$this.variable_name = "new value"
}
}
});
app.mount('#user-goal');





Github Practice Code






Tahsin-Ahmed52225
/
100days-with-Vue