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39 lines
970 B
39 lines
970 B
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>v-once</title>
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</head>
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<body>
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<!--
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v-bind: 单向绑定，可简写为 :xxx
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v-model: 双向绑定
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v-for: 循环逻辑
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v-on: 绑定监听事件，可简写为 @xxx
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v-if\v-else: 条件逻辑
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v-show: 条件渲染
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v-text: 所在标签替换文本
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v-html: 将文本渲染成html代码，具有安全隐患
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v-cloak: 在vue.js加载完成前加载html代码，结合css防闪烁 无需赋值
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v-once：指定节点仅在初始化时渲染，之后不在更新
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-->
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<div id="root">
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<h2 v-once>n的初始值：{{n}}</h2>
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<h2>当前n值：{{n}}</h2>
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<button @click="n++">n+1</button>
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</div>
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<script type="text/javascript" src="../vue.js"></script>
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</body>
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<script type="text/javascript">
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Vue.config.productionTip = false // 组织开发环境提示
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// 创建Vue实例
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const x = new Vue({
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el: '#root',
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data: {
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n: 1,
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}
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})
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</script>
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</html>
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