Vue Render Functions
In this post, we will give you information about Vue Render Functions. Here we will give you detail about Vue Render Functions And how to use it also give you a demo for it if it is necessary.
Vue’s render functions let you build components using JSX, React’s superset of JavaScript. One of the reasons why Vue is so compelling is that you can build a Vue app with vanilla JavaScript – you don’t necessarily need JSX. But if you’re upgrading from React to Vue, using Vue’s render functions can make the switch more comfortable.
Hello, Render Functions for Vue Render Functions
You can create a Vue component that has a render
function. When it needs to render the component, Vue calls the render()
function with a single parameter: the createElement()
function.
const app = new Vue({
data: () => ({ user: 'World' }),
render: function(createElement) {
// 'this' refers to the Vue instance, so you can
// edit data.
return createElement('h1', 'Hello, ' + this.user);
}
});
Using JSX
The createElement()
function is similar to React’s top-level createElement()
function. That means a transpiler like [Babel](https://babeljs.io/docs/en/babel-plugin-transform-react-jsx can convert the below JSX Vue instance o the previous example.
/** @jsx createElement */
const app = new Vue({
data: () => ({ user: 'World' }),
render: function(createElement) {
return (<h1>{this.user}</h1>);
}
});
Note that the @jsx
pragma comment
above must line up with the createElement()
function name. That comment tells the transpiler what function to use when transpiring JSX to createElement()
calls.
Data Input for Vue Render Functions
You can’t use built-in Vue directives like v-for
and
v-model
with render functions.
What you can do is use the 2nd parameter to createElement()
to define on
handlers.
const app = new Vue({
data: () => ({ count: 0 }),
render: function(createElement) {
return createElement('div', null, [
createElement('h1', 'Count: ' + this.count),
// Note that the **2nd** parameter is the 'data' object. Otherwise,
// 'on' won't work.
createElement('button', {
domProps: {
innerHTML: 'Increment'
},
on: { click: () => ++this.count }
})
]);
}
});
With the above example, you can click the ‘Increment’ button to increase
the count
property.
Vue.js is a progressive JavaScript framework that makes building user interfaces simple and enjoyable. Vue is designed from the ground up to be incrementally adoptable, so you can use the features you need, and mix and match Vue with other libraries or frameworks.
Vue is a relatively new framework, but it has quickly become one of the most popular JavaScript frameworks in the world. It is used by large companies like Alibaba, Baidu, and Xiaomi, as well as by thousands of smaller businesses and startups.
Here are some of the features that make Vue.js so popular:
- Declarative rendering: Vue uses a declarative rendering model, which means that you can describe the desired output of your application in terms of HTML, CSS, and JavaScript. This makes it easy to reason about your code and to make changes to your application.
- Reactivity: Vue is a reactive framework, which means that it automatically updates the DOM whenever there is a change to the application’s state. This makes your application feel fast and responsive.
- Composition: Vue is a component-based framework, which means that you can build your application out of reusable components. This makes your code more maintainable and easier to test.
- Performance: Vue is a highly performant framework. It has been benchmarked against other popular JavaScript frameworks, and it has consistently outperformed them.
If you are looking for a JavaScript framework that is easy to learn, powerful, and performant, then Vue.js is a great choice.
Here are some of the things you can do with Vue.js:
- Build single-page applications
- Create user interfaces for web, mobile, and desktop applications
- Integrate with other JavaScript frameworks and libraries
- Build custom components
- Create reusable code
- Test your code
If you are interested in learning more about Vue.js, there are a number of resources available online. The official Vue.js website has a comprehensive documentation and a number of tutorials. There are also a number of third-party websites and blogs that offer tutorials, articles, and other resources about Vue.js.
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