vite中配置vue3使用jsx语法
安装 yarn add @vitejs/plugin-vue-jsx
vite.config.js
js
import { defineConfig } from "vite";
import vueJsx from '@vitejs/plugin-vue-jsx'
// https://vitejs.dev/config/
export default defineConfig({
plugins: [
vueJsx(),
...
],
})
语法
js
把 on: { click: xx } 转成 onClick: xxx
函数式组件
const App = () => <div></div>;
在 render 中使用
const App = {
render() {
return <div>Vue 3.0</div>;
},
};
import { withModifiers, defineComponent } from "vue";
const App = defineComponent({
setup() {
const count = ref(0);
const inc = () => {
count.value++;
};
return () => (
<div onClick={withModifiers(inc, ["self"])}>{count.value}</div>
);
},
});
const App = () => (
<>
<span>I'm</span>
<span>Fragment</span>
</>
);
Attributes / Props
const App = () => <input type="email" />;
动态绑定:
const placeholderText = "email";
const App = () => <input type="email" placeholder={placeholderText} />;
指令
v-show
const App = {
data() {
return { visible: true };
},
render() {
return <input v-show={this.visible} />;
},
};
v-model
注意:如果想要使用 arg, 第二个参数需要为字符串
<input v-model={val} />
<input v-model:argument={val} />
<input v-model={[val, ["modifier"]]} />
<A v-model={[val, "argument", ["modifier"]]} />
会编译成:
h(A, {
argument: val,
argumentModifiers: {
modifier: true,
},
"onUpdate:argument": ($event) => (val = $event),
});
v-models (从 1.1.0 开始不推荐使用)
注意: 你应该传递一个二维数组给 v-models。
<A v-models={[[foo], [bar, "bar"]]} />
<A
v-models={[
[foo, "foo"],
[bar, "bar"],
]}
/>
<A
v-models={[
[foo, ["modifier"]],
[bar, "bar", ["modifier"]],
]}
/>
会编译成:
h(A, {
modelValue: foo,
modelModifiers: {
modifier: true,
},
"onUpdate:modelValue": ($event) => (foo = $event),
bar: bar,
barModifiers: {
modifier: true,
},
"onUpdate:bar": ($event) => (bar = $event),
});
自定义指令
只有 argument 的时候推荐使用
const App = {
directives: { custom: customDirective },
setup() {
return () => <a v-custom:arg={val} />;
},
};
const App = {
directives: { custom: customDirective },
setup() {
return () => <a v-custom={[val, "arg", ["a", "b"]]} />;
},
};
插槽
注意: 在 jsx 中,应该使用 v-slots 代替 v-slot
const A = (props, { slots }) => (
<>
<h1>{ slots.default ? slots.default() : 'foo' }</h1>
<h2>{ slots.bar?.() }</h2>
</>
);
const App = {
setup() {
const slots = {
bar: () => <span>B</span>,
};
return () => (
<A v-slots={slots}>
<div>A</div>
</A>
);
},
};
// or
const App = {
setup() {
const slots = {
default: () => <div>A</div>,
bar: () => <span>B</span>,
};
return () => <A v-slots={slots} />;
},
};
const App = {
setup() {
return () => (
<>
<A>
{{
default: () => <div>A</div>,
bar: () => <span>B</span>,
}}
</A>
<B>{() => "foo"}</B>
</>
);
},
};
参考文章 查看