作为javascript开发,vue中created与mounted区别 ?


在Vue.js中,`created`和`mounted`都是生命周期钩子函数,它们在组件被创建和渲染时分别被调用。 `created`钩子在组件被创建时被调用。在这个阶段,所有的属性已经被设置,所有的子组件也已经被创建,但是DOM元素尚未被渲染。 ```javascript export default { name: 'HelloWorld', created() { console.log('created') }, data() { return { msg: 'Welcome to Your Vue.js App' } }, template: '<div>hello {{ msg }}</div>' } ``` `mounted`钩子在组件被创建并挂载到DOM上之后被调用。在这个阶段,所有的数据都已经渲染到DOM中。 ```javascript export default { name: 'HelloWorld', mounted() { console.log('mounted') }, data() { return { msg: 'Welcome to Your Vue.js App' } }, template: '<div>hello {{ msg }}</div>' } ``` 如果你需要在组件被挂载到DOM上之后进行一些操作,例如发起网络请求,获取数据等,你应该使用`mounted`钩子。而如果你只是需要在组件被创建时做一些初始化操作,例如设置一些默认值,你应该使用`created`钩子。 [2023-11-09 01:34:20 | AI写代码神器 | 283点数解答]
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