1. 解释vue/no-shared-component-data规则 vue/no-shared-component-data是Vue官方ESLint插件中的一个规则,用于确保Vue组件的data属性是一个函数。这个规则的目的是防止组件实例之间共享同一个数据对象,从而避免数据污染和状态不一致的问题。 2. 理解为什么在Vue中组件的data必须是一个函数 在Vue中,每个
如果是上面这种写法,不出意外的话,在vs code data处将会出现红线报错data property in component must be a function,提示我们data必须是一个function。 为什么 好,重点来了,为什么呢?原因就是:通过函数返回数据对象,保证了每个组件实例都有一个唯一的数据副本,避免了组件间数据互相影响。 先上结论: 每个子组件注册...
function Component(){ this.data = this.data() } Component.prototype.data = function (){ ...
then because of how JavaScript works, every single instance of the component will share this property.This is not what you want in 99.9% of the cases, and instead you must do:data: function() { return { counter: 0 } }It might be non-intuitive at first, but once you accept this ...
Object.defineProperty(target, key, sharedPropertyDefinition) } //方法映射 function initMethods (vm: Component, methods: Object) { const props = vm.$options.props for (const key in methods) { //这些都是开发环境的提示信息,可以忽略 if (process.env.NODE_ENV !== 'production') { ...
To restrict the types of values that a property can store, associate a data type with the property in the property definition. For example, this code requires that values assigned to X must be of a type that is compatible with double, and any assigned values are stored as a double....
When using remote data binding, all chart actions will be processed on the server-side. To avoid postback for every action, configure the chart to load all data upon initialization and handle actions on the client-side. To enable this behavior, utilize the offline property of the DataManager...
export function initState (vm: Component) { // 为当前组件创建了一个watchers属性,为数组类型 vm._watchers保存着当前vue组件实例的所有监听者(watcher) vm._watchers = [] // 从实例上获取配置项 const opts = vm.$options //如果vm.$options上面定义了props 初始化props 对props配置做响应式处理 ...
In the component editor, view or modify the property values, and then close the editor. To save the updated package, on theFilemenu, clickSave Selected Items. Set the properties of a data flow component in the Properties window In SQL Server Data Tools (SSDT), open the Integration Services...
The MSXML library can be imported in Win32® and even common language runtime (CLR)-targeted code, but it remains an external black box acting as a server component. .NET Framework-based applications, on the other hand, can use XML core classes right alongside the othe...