[英]Can I data bind a function in Vue js?
is it possible to data bind a function in Vue?是否可以在 Vue 中对函数进行数据绑定?
In the template I have something like: <title> {{nameofFunction()}}</title>
在模板中我有类似的东西:
<title> {{nameofFunction()}}</title>
When I run it, it just says native function on the page.当我运行它时,它只是在页面上显示本机功能。
Thanks.谢谢。
There is also such thing as " computed property " in Vue, designed to do exactly this: Vue 中还有诸如“计算属性”之类的东西,旨在做到这一点:
<template>
<div id="example">
<p>Original message: "{{ message }}"</p>
<p>Computed reversed message: "{{ reversedMessage }}"</p>
</div>
</template>
<script>
export default {
data:() => ({
message: 'Hello'
}),
computed: {
// a computed getter
reversedMessage: function () {
// `this` points to the vm instance
return this.message.split('').reverse().join('')
}
}
}
</script>
yes you can.是的你可以。 Could you share how are you defining your data options?
您能否分享一下您是如何定义数据选项的?
Here I have an example that works both in Vue2 and Vue3这里我有一个适用于 Vue2 和 Vue3 的示例
<template>
<div id="app">
<h1>{{messageHelloFn()}}</h1>
</div>
</template>
<script>
export default {
data() {
return {
messageHelloFn: (name = 'Lucas') => {
return `Hello ${name}`
}
};
}
};
</script>
Live example: https://codepen.io/LucasFer/pen/abywRMW现场示例: https ://codepen.io/LucasFer/pen/abywRMW
a.js一个.js
const func = (str) => str
export default fn
<template>
<div id="app">
<div v-for="item in items">
{{ getTime(item) }}
</div>
<div>
{{ fn('a') }}
</div>
<div>
{{ func('b') }}
</div>
</div>
</template>
<script>
import func from './a.js'
export default {
data () {
return {
items: ['123123', '456456'],
fn: (str) => str
}
},
methods: {
getTime (v) {
return v + '123'
}
}
};
</script>
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