// 将之前用的 options,loading,和调用接口的逻辑都抽离到hook中 const selectBind = useFetchSelect({ apiFun: getRemoteData, }); </script> <template> <div> <!-- 将hook返回的接口,通过 v-bind 绑定给组件 --> <a-selectv-bind="selectBind" /> </div> </template> 这样一来,代码行数直接又...
<div id="root"> <div v-bind:class="classObject"></div> </div> <script type="text/javascript"> new Vue({ el: "#root", data: { isActive: true, error: null }, computed: { classObject: function () { return { active: this.isActive && !this.error, 'text-danger': this.error...
functionuseFeatureX(){conststate=reactive({foo:1,bar:2})/*操作 state 的逻辑*//*返回时转换为ref*/returntoRefs(state)}exportdefault{setup(){/*可以在不失去响应性的情况下解构*/const{foo,bar}=useFeatureX()return{foo,bar}}} 适合简化在层级较多的响应式对象调用。 说明:ref与toRef的区别 ref复制...
import{toRefs,reactive}from'vue';functionuseMouse(){conststate=reactive({x:0,y:0});constupdate=e=>{state.x=e.pageX;state.y=e.pageY;}onMounted(()=>{window.addEventListener('mousemove',update);})onUnmounted(()=>{window.removeEventListener('mousemove',update);})returntoRefs(state);} 我们...
function setupComponent( instance: ComponentInternalInstance, isSSR = false ) { isInSSRComponentSetup = isSSR const { props, children, shapeFlag } = instance.vnode const isStateful = shapeFlag & ShapeFlags.STATEFUL_COMPONENT // {A} initProps(instance, props, isStateful, isSSR) // {B} ...
通过this直接访问到methods里面的函数的原因是:因为methods里的方法通过 bind 指定了this为 new Vue的实例(vm)。通过 this 直接访问到 data 里面的数据的原因是:data里的属性最终会存储到new Vue的实例(vm)上的 _data对象中,访问 this.xxx,是访问Object.defineProperty代理后的 this._data.xxx。
bind -> beforeMount inserted -> mounted remove update hook and insert a comment to note the user about the change componentUpdated -> updated unbind -> unmounted 🔴 VNode interface change (a runtime compat plugin is also possible, see the notes for RFC08) RFC13: Composition API import ....
to enable multiple stories to be created using different route setups, it was noticed that this caused the globalbeforeEachfunction to be added on every route. For example every time you click a different story the newbeforeEachhook is added - but previous ones are not removed, this results ...
push-message-before A hook function that fires before the push message is displayed. function function(message, name) Below are the removed properties show-log-time: Removed after 2.0.14 and 3.0.13 versions. warn-log-byte-limit: Removed after 2.1.0 and 3.1.0. warn-log-limit-enable: Remove...
module.exports = function mergeJSXProps (objs) { return objs.reduce(function (a, b) { // 省略大量代码 }, {}) } mergeJSXProps 函数主要的对 attrs、props、on、nativeOn、class、style、hook 的值进行合并,其中 attrs、props 的属性的值是对象类型,合并过程中类似于 Object.assign,比如: var data...