This Vue JS tutorial is going to cover a cool method you can use to more efficiently pass down props to your components in Vue JS.

When using a component-based framework like Vue JS, it’s a very common pattern that you want to pass data down to a child components as props.

For example, let’s say you have a simple custom card component that accepts two props: title, content and img. Passing props down to such a component would look something this:

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<my-card
   title="my cool card"
   img="google.com"
   content="my content"

/>

And for the most part, that’s fine. However, some times you have a component that takes 10, 20 or maybe even more props. At that point, typing out all of those props gets rather tedious, not to mention more code means more potential places of failure.

One away around this is to combine all of your props into one object and pass that down as a prop. However, this doesn’t work if you are using an existing component component that you can’t make changes to.

Another component-based framework, React, has a really elegant solution for this problem. In react, you can “spread props” by using the spread operator as follows:

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<Component {...something} />

After seeing this, you might be tempted to do the same thing in Vue. Unfortunately, vue does not support the use of the spread operator in it’s templates. However, vue does have a way of using v-bind to achieve the same results. For example, let’s go back to the custom card component from before that accepted 3 props. Let’s now assume that we have all of that data encapsulated in an object called “myProps”.

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myProps: {
    title:"my cool card"
    img:"google.com"
    content:"my content"
}

With this, we can now do the following:

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<my-card
   v-bind="myProps"
/>

Isn’t that awesome? Vue will distribute each similarly named object property to the props within your child component. This is also really handy when you want to pass props to more deeply nested components. In such a case, you can just pass your components $props object directly to the child component.

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<my-component
    v-bind="$props"
/>

Discovering productivity tricks like this is always nice and make me very happy. 😁
Using v-bind to pass down props is very convenient and can often lead to much more easily maintainable code when used in the right situation.

If you like cool Vue JS tricks, definitely check out my tutorial Vue JS Productivity Hack: How To Import All Vuex Modules Automatically. There’s also plenty of other Vue JS content on my site if you’re interested.

Keep on learning!