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Vue comes with two different ways of storing variables, props and data.

1. Hi, I wonder if it would be good to have something like this. (maybe it's already achievable via current Vue functional, but I didn't find it) Imagine I have a 12 rows Grid component that has props of xs, sm,md and lg, has a single slot.
2. I am trying to create a component that accepts an object as prop and can modify different properties of that object and return the value to the parent, using either sync or emit events.
3. Slots are a powerful tool for creating reusable components in Vue.js, though they aren't the simplest feature to understand. Let's take a look at how to use slots and some examples of how they can be used in your Vue applications.
4. One of the main concerns I have when building Vuex-based applications is the tight coupling of components with the Vuex store that seems inevitable when using Vuex. Ideally, I want to be able to switch the data layer of my application at any time without having to touch all my components that rely on data from an external resource.

These can be confusing at first, since they seem like they do similar things, and it's not clear when to use one vs the other.

Vue.js simplified: components, props, and slots December 10, 2020 8 min read 2425 In this article, we will be using Vue.js, Vue CLI and Bootstrap CSS.

So what's the difference between props and data?

Data is the private memory of each component where you can store any variables you need. Props are how you pass this data from a parent component down to a child component.

In this article you'll learn:

• What props are, and why this data only flows down, not up
• What the data option is used for
• What reactivity is
• How to avoid naming collisions between props and data
• How to use props and data together for fun and profit 💰

What are props?

In Vue, props (or properties), are the way that we pass data from a parent component down to it's child components.

When we build our applications out of components, we end up building a data structure called a tree. Similar to a family tree, you have:

• parents
• children
• ancestors
• and descendants

Data flows down this tree from the root component, the one at the very top. Sort of like how genetics are passed down from one generation to the next, parent components pass props down to their children.

In Vue we add props to components in the section of our code:

In this example, we are passing the prop cool-prop a value of 'hello world'. We will be able to access this value from inside of my-component.

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However, when we access props from inside of a component, we don't own them, so we can't change them (just like you can't change the genes your parents gave you). Gram slot johnny madsen.

Note: While it's possible to change properties in a component, it's a really bad idea. You end up changing the value that the parent is using as well, which can cause lots of confusion.

There is a lot more to props than this. In fact, I wrote a comprehensive guide on using props that teaches all you need to know about props in Vue.

But if we can't change variables, we're kind of stuck.

This is where data comes in!

What is data?

Data is the memory of each component. This is where you would store data (hence the name), and any other variables you want to track.

If we were building a counter app, we would need to keep track of the count, so we would add a count to our data:

This data is private, and only for the component itself to use. Other components do not have access to it.

Note: Again, it is possible for other components to access this data, but for the same reasons, it's a really bad idea to do this!

If you need to pass data to a component, you can use props to pass data down the tree (to child components), or events to pass data up the tree (to parent components).

Props and data are both reactive

With Vue you don't need to think all that much about when the component will update itself and render new changes to the screen.

This is because Vue is reactive.

Instead of calling setState every time you want to change something, you just change the thing! As long as you're updating a reactive property (props, computed props, and anything in data), Vue knows to watch for when it changes.

Going back to our counter app, let's take a closer look at our methods:

All we have to do is update count, and Vue detects this change. It then re-renders our app with the new value!

Vue's reactivity system has a lot more nuance to it, and I believe it's really important to understand it well if you want to be highly productive with Vue. Here are some more things to learn about Vue's reactivity system if you want to dive deeper.

Avoiding naming collisions

There is another great thing that Vue does that makes developing just a little bit nicer.

Let's define some props and data on a component:

If we wanted to access them inside of a method, we don't have to do this.props.propA or this.data.dataA. Vue let's us omit props and data completely, leaving us with cleaner code.

We can access them using this.propA or this.dataA:

Because of this, if we accidentally use the same name in both our props and our data, we can run into issues.

Vue will give you a warning if this happens, because it doesn't know which one you wanted to access!

The real magic of using Vue happens when you start using props and data together.

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Using props and data together

Now that we've seen how props and data are different, let's see why we need both of them, by building a basic app.

Web poker online bonus new member 1000. The welcome offer at Bet365 Poker is 100% bonus of up to $100 on your first deposit. You must provide at least $10 for your first deposit to utilize this offer. You may also require a bonus code. Most deposit bonuses for new players will offer a 100% match and you can even find sites that have welcome packages, offering multiple bonuses on your first few deposits. With our guide, you will find the highest paying bonus offers that can quickly get you started with the best online poker games. New players at 888 can receive a poker bonus of 100% up to $600. This means a $600 or larger deposit will net you $600 in bonus funds. To clear the bonus, you must earn 100 Bonus Points for a $10 increment. This means for the full $600 bonus, you must collect 6,000 Bonus Points.

Let's say we are building a social network and we're working on the profile page. We've built out a few things already, but now we have to add the contact info of the user.

We'll display this info using a component called ContactInfo:

The ContactInfo component takes the props emailAddress, twitterHandle, and instagram, and displays them on the page.

Our profile page component, ProfilePage, looks like this:

Vuejs Slots Vs Props Play

Our ProfilePage component currently displays the users profile picture along with their name. It also has the user data object.

1. Hi, I wonder if it would be good to have something like this. (maybe it's already achievable via current Vue functional, but I didn't find it) Imagine I have a 12 rows Grid component that has props of xs, sm,md and lg, has a single slot.
2. I am trying to create a component that accepts an object as prop and can modify different properties of that object and return the value to the parent, using either sync or emit events.
3. Slots are a powerful tool for creating reusable components in Vue.js, though they aren't the simplest feature to understand. Let's take a look at how to use slots and some examples of how they can be used in your Vue applications.
4. One of the main concerns I have when building Vuex-based applications is the tight coupling of components with the Vuex store that seems inevitable when using Vuex. Ideally, I want to be able to switch the data layer of my application at any time without having to touch all my components that rely on data from an external resource.

These can be confusing at first, since they seem like they do similar things, and it's not clear when to use one vs the other.

Vue.js simplified: components, props, and slots December 10, 2020 8 min read 2425 In this article, we will be using Vue.js, Vue CLI and Bootstrap CSS.

So what's the difference between props and data?

Data is the private memory of each component where you can store any variables you need. Props are how you pass this data from a parent component down to a child component.

In this article you'll learn:

• What props are, and why this data only flows down, not up
• What the data option is used for
• What reactivity is
• How to avoid naming collisions between props and data
• How to use props and data together for fun and profit 💰

What are props?

In Vue, props (or properties), are the way that we pass data from a parent component down to it's child components.

When we build our applications out of components, we end up building a data structure called a tree. Similar to a family tree, you have:

• parents
• children
• ancestors
• and descendants

Data flows down this tree from the root component, the one at the very top. Sort of like how genetics are passed down from one generation to the next, parent components pass props down to their children.

In Vue we add props to components in the section of our code:

In this example, we are passing the prop cool-prop a value of 'hello world'. We will be able to access this value from inside of my-component.

Vuejs Slots Vs Props For Real

However, when we access props from inside of a component, we don't own them, so we can't change them (just like you can't change the genes your parents gave you). Gram slot johnny madsen.

Note: While it's possible to change properties in a component, it's a really bad idea. You end up changing the value that the parent is using as well, which can cause lots of confusion.

There is a lot more to props than this. In fact, I wrote a comprehensive guide on using props that teaches all you need to know about props in Vue.

But if we can't change variables, we're kind of stuck.

This is where data comes in!

What is data?

Data is the memory of each component. This is where you would store data (hence the name), and any other variables you want to track.

If we were building a counter app, we would need to keep track of the count, so we would add a count to our data:

This data is private, and only for the component itself to use. Other components do not have access to it.

Note: Again, it is possible for other components to access this data, but for the same reasons, it's a really bad idea to do this!

If you need to pass data to a component, you can use props to pass data down the tree (to child components), or events to pass data up the tree (to parent components).

Props and data are both reactive

With Vue you don't need to think all that much about when the component will update itself and render new changes to the screen.

This is because Vue is reactive.

Instead of calling setState every time you want to change something, you just change the thing! As long as you're updating a reactive property (props, computed props, and anything in data), Vue knows to watch for when it changes.

Going back to our counter app, let's take a closer look at our methods:

All we have to do is update count, and Vue detects this change. It then re-renders our app with the new value!

Vue's reactivity system has a lot more nuance to it, and I believe it's really important to understand it well if you want to be highly productive with Vue. Here are some more things to learn about Vue's reactivity system if you want to dive deeper.

Avoiding naming collisions

There is another great thing that Vue does that makes developing just a little bit nicer.

Let's define some props and data on a component:

If we wanted to access them inside of a method, we don't have to do this.props.propA or this.data.dataA. Vue let's us omit props and data completely, leaving us with cleaner code.

We can access them using this.propA or this.dataA:

Because of this, if we accidentally use the same name in both our props and our data, we can run into issues.

Vue will give you a warning if this happens, because it doesn't know which one you wanted to access!

The real magic of using Vue happens when you start using props and data together.

Vuejs Slots Vs Props Free

Using props and data together

Now that we've seen how props and data are different, let's see why we need both of them, by building a basic app.

Web poker online bonus new member 1000. The welcome offer at Bet365 Poker is 100% bonus of up to $100 on your first deposit. You must provide at least $10 for your first deposit to utilize this offer. You may also require a bonus code. Most deposit bonuses for new players will offer a 100% match and you can even find sites that have welcome packages, offering multiple bonuses on your first few deposits. With our guide, you will find the highest paying bonus offers that can quickly get you started with the best online poker games. New players at 888 can receive a poker bonus of 100% up to $600. This means a $600 or larger deposit will net you $600 in bonus funds. To clear the bonus, you must earn 100 Bonus Points for a $10 increment. This means for the full $600 bonus, you must collect 6,000 Bonus Points.

Let's say we are building a social network and we're working on the profile page. We've built out a few things already, but now we have to add the contact info of the user.

We'll display this info using a component called ContactInfo:

The ContactInfo component takes the props emailAddress, twitterHandle, and instagram, and displays them on the page.

Our profile page component, ProfilePage, looks like this:

Vuejs Slots Vs Props Play

Our ProfilePage component currently displays the users profile picture along with their name. It also has the user data object.

How do we get that data from the parent component (ProfilePage) down into our child component (ContactInfo)?

We have to pass down this data using props.

First we need to import our ContactInfo component into the ProfilePage component:

Second, we have to add in the component to our section:

Now all the user data that ContactInfo needs will flow down the component tree and into ContactInfo from the ProfilePage!

The reason we keep the data in ProfilePage and not ContactInfo is that other parts of the profile page need access to the user object.

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Since data only flows down, this means we have to put our data high enough in the component tree so that it can flow down to all of the places it needs to go.

If you enjoyed this article or have any comments, let me know by replying to this tweet!