Vue &带模板标签的条件渲染 [英] Vue & conditional rendering with template tag

问题描述

我正在尝试遵循文档:

• https://vuejs.org/v2/guide/conditional.html

但是由于某种原因，我的模板没有按预期工作，一旦我放入 <template v-if="variable"> vue 就无法呈现任何内容.

有什么建议吗?

演示问题的片段:

https://jsfiddle.net/o2tL2ems/1/

解决方案

关于 vue.js 有一点需要了解，Peter 在评论中指出.模板不能是根元素，一般根标签只能是一个.

所以当你有这样的模板时:

你基本上是在向 vue.js 询问问题.带有 okBoom 的 div 结束后，Vue 将停止解析您的模板.

网上到处都有和我类似的问题:

• 奇怪的模板和 vue.js 的根节点

简而言之解决方案.将您的模板包装到 master span、div 或 transition 中(不过这个看起来有点老套，另一方面它不会生成不必要的 html 标签).

I am trying to follow documentation:

• https://vuejs.org/v2/guide/conditional.html

But for some reason my template is not working as expected, as soon as I put <template v-if="variable"> vue fails to render anything.

<script type="text/x-template" id="dashboard-inititial-message">

<template v-if="okBoom">
    <h1>Title</h1>
    <p>Paragraph 1</p>
    <p>Paragraph 2</p>
</template>

<div v-if="ok">
    <h1>Title</h1>
    <p>Paragraph 1</p>
    <p>Paragraph 2</p>
</div>
<div v-else>
    <p>ELSE</p>
</div>
</script>

Any advice?

Snippets that demonstrate problem:

https://jsfiddle.net/o2tL2ems/1/

解决方案

There is a thing to know about vue.js, Peter pointed it out in a comment. Template cannot be a root element and in general root tag can be only one.

So when you have template like this:

<script type="text/x-template" id="dashboard-inititial-message-mk1">
    <div v-if="okBoom">
        <h1>Title</h1>
        <p>Paragraph 1</p>
        <p>Paragraph 2</p>
    </div>
    <h3>adas</h3>
    <div v-if="ok">
        <h1>Title</h1>
        <p>Paragraph 1</p>
        <p>Paragraph 2</p>
    </div>
</script>

You basically asking vue.js for problems. Vue will stop parsing your template as soon as div with okBoom ends.

There are questions similar to mine all over the internet:

• Oddity with templates and root node with vue.js

Solution in short. Wrap your template into master span, div or transition (this one however seems to be a bit hacky, on the other hand it won't generate unnecessary html tags).

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