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39 lines
970 B
39 lines
970 B
<!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> |