import { on , off } from '@/utils/domUtils' const clickOutside = { mounted(el, binding) { function eventHandler(e) { if (el.contains(e.target) || el === e.target) { return false } if (binding.value && typeof binding.value === 'function') { binding.value(e) } } el.__c...
[Vue warn]:Unhandled error during executionofsetupfunction 案例重现: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // 错误示例setup(){conststate=reactive({})initCriticalData()// 直接调用高风险方法return{state}}// 正确示例setup(){conststate=reactive({})onMounted(()=>{try{initCriticalData(...
<template> {{ greeting }} World! </template> module.exports = { data: function () { return { greeting: 'Hello' } } } p { font-size: 2em; text-align: center; } 组件的骨架(HTML)、样式(CSS)和数据或操作(JS)都在同一个地方,开发者需要思考如何将整个系统拆分成更小的子模块,或者...
2.1 基本用法 constfullName=computed(()=>{returnfirstName.value+' '+lastName.value}) 1. 2. 3. 2.2 底层原理 exportfunctioncomputed(getter){letvalueletdirty=trueconsteffectFn=effect(getter,{lazy:true,scheduler:()=>{dirty=truetrigger(obj,'value')}})constobj={getvalue(){if(dirty){value=eff...
onSwipeItem(item, i) {returnfunction(direction, mouseEvent){console.log("Swiped item ", i,": ", item," in direction ", direction); }; }, }, Touch and Tap These events are provided by this library.Most of these work on Desktop & Mobile. ...
functionuseScopedCounter(){constscope=effectScope()constcount=ref(0)scope.run(()=>{watchEffect(()=>{console.log('count in scope:',count.value)})})return{count,stop:()=>scope.stop()}} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. ...
transition; } if (true && setRoot) { setRoot(root); } else { result = root; } } catch (err) { handleError(err, instance, 1 /* RENDER_FUNCTION */); result = createVNode(Comment); } currentRenderingInstance = null; return result; } // 好了,有了完整的组件实例和对应的vnode信息了...
functiononDragStartCallback(ev){...// return false; — for cancel} onDrag Type:Function Required:false Default:null Called before the element is dragged. The function receives the next values ofxandy. Iffalseis returned by any handler, the action will cancel. ...
[Style] [popover] (element-plus@2.3.12,根据官网el-popover虚拟触发案例,在vue3中导入ClickOutside指令显示找不到node_modules/element-plus/es/components/ck-outside/style/css) According to the el-popover virtual trigger case on the official website, importing ClickOutside directive in vue3 shows th...
’ll have to instantiate the starting point of the map marker by setting it to the first coordinate in the feature array. We’ll do this by declaring a reactive state so our point position is reactive. We’ll then return the point position so we can access it outside of this function....