transition文檔地址定義一個背景彈出層實現(xiàn)淡入淡出效果

<template> <div> <button @click='show = !show'> Toggle </button> <transition name='fadeBg'> <div v-if='show'>hello</div> </transition> </div></template><script> export default { data: () => ({ show: true }), };</script><style lang='less' scoped> .fadeBg-enter-active, .fadeBg-leave-active { transition: opacity 0.3s ease; } .fadeBg-enter, .fadeBg-leave-to { opacity: 0; } .bg { position: fixed; top: 20px; left: 0; z-index: 105; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5); }</style>

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