In case anyone finds this issue from google searching for the same thing in Vue 2.0 and figures out that interpolation in props has been removed like I did, here is the proper way to do this is to simply do or . Hello, I propose adding a feature that allows the use of ES6 spread operator to destructure an object into props passed into a component. There are 3 specific things here I'd like to cover: 1. However, when we access props from inside of a component, we don't own them, so we … It has an Array-based simple syntax and an alternative Object-based syntax that allows advanced configurations such as type checking, custom validation and default values. 我就废话不多说，看代码吧~ seller: { type: Object, default() { return {} … For example, we could use a logical OR to use a default if we don't have an image for the camera: More commonly, we use the shorthand for v-bind which is just : and reduces clutter in the code: Because you can put in any arbitrary piece of Javascript, you can do a lot of nifty little things, such as dynamically adding a class name, or implementing a hover. Let’s validate our props present in Button component. 这篇文章主要介绍了Vue props中Object和Array设置默认值操作，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧. A static type system can help prevent many potential runtime errors as applications grow, which is why Vue 3 is written in TypeScript. Just make sure you don't violate those two rules and you'll be golden. When you call render, you pass in the Vue component and an optional options object. Previously, a component’s props were just part of the `this` object and could simply be accessed by using this.propName. Earlier we saw how to add a default image if we didn't have one for our camera, but this is a better way: Instead of cluttering up our template, we put the default value right alongside all of the other information about the img prop. We pass props to another component, and that component can then use that value. Passing data down through component props is a common Vue pattern. If you do, Vue will warn you in the console. So if the camera is the Sony A6400, the URL will become ./images/cameras/Sony%20A6400.jpg. In this article, we’ll look at how to use props with Vue 3. All props form a one-way-down binding between the child property and the parent one: when the parent property updates, it will flow down to the child, but not the other way around. You cannot pass data from a child to a parent. The Camera component will then use the name and img props to render itself to the page. While we're at it, we should specify a default for our rating prop as well. In Vue we add props to components in the section of our code: < template > < my-component cool-prop = " hello world " > In this example, we are passing the prop cool-prop a value of "hello world". All Kind Of Props. The main reason this gives better type inference is that it is easier to type props and context, which are easily defined objects, to this, which is highly dynamic in JavaScript. 这篇文章主要介绍了Vue props中Object和Array设置默认值操作，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧 Unless you’re creating your entire Vue app in one component (which wouldn’t make any sense), you’re going to encounter situations where you need to share data between components. -->, ,