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How to use keep-alive for page cache control in the Vue project
In the Vue project, keep-alive is a very useful component that can help us implement page cache control. By wrapping a component in a keep-alive tag, you can enable the component to retain its state when switching, thereby improving the page's loading speed and user experience. In this article, we will discuss how to use keep-alive in Vue projects and give some code examples to illustrate its usage and effects.
<template> <div> <keep-alive> <router-view></router-view> </keep-alive> </div> </template> <script> export default { name: "App", }; </script>
In the above code, we wrap 975b587bf85a482ea10b0a28848e78a4dd6e4ababe59793a4ac75fb9e5c5550e
in ea94f6e98799adaa6857b9c6444122eb
. In this way, every time the route is switched, the components rendered by 975b587bf85a482ea10b0a28848e78a4
will be cached.
activated
and deactivated
. Some custom logic can be defined in these two hook functions to provide better cache control. The sample code is as follows:
<template> <div> <keep-alive :include="['Home']" @activated="handleActivated" @deactivated="handleDeactivated"> <router-view></router-view> </keep-alive> </div> </template> <script> export default { name: "App", methods: { handleActivated() { // 在keep-alive激活时执行的逻辑 console.log("Activated"); }, handleDeactivated() { // 在keep-alive停用时执行的逻辑 console.log("Deactivated"); }, }, }; </script>
In the above code, we specify the components that need to be cached through the include
attribute, and through activated
and deactivated
properties are bound to the handleActivated
and handleDeactivated
methods respectively. This way, when these components are activated and deactivated, the corresponding methods will be called.
exclude
attribute. The sample code is as follows: <template> <div> <keep-alive :exclude="['Login']"> <router-view></router-view> </keep-alive> </div> </template>
In the above code, we use the exclude
attribute to specify the components that do not need to be cached, so that these components will not be cached.
Summary:
In the Vue project, using keep-alive can easily achieve page cache control. By wrapping components that need to be cached in keep-alive, the page loading speed and user experience can be improved. Through life cycle hook functions and properties, we can also have more fine-grained cache control. I hope this article can help you understand and apply the keep-alive component and play a greater role in your project.
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