这篇文章主要讲解了“Vue3.0中怎么监听props”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“Vue3.0中怎么监听props”吧!
Vue3.0监听props的方法
第一种
直接监听这个props
export default defineComponent({ props: { isOpen: Boolean, }, emits: { "close-modal": null, }, setup(props, context) { watch( props, (newProps) => { console.log(newProps.isOpen); //这里看到新值 } ); const closeModal = () => { context.emit("close-modal"); }; return { closeModal, }; },});
第二种
监听里边的某一个属性
export default defineComponent({ props: { isOpen: Boolean, }, emits: { "close-modal": null, }, setup(props, context) { watch( () => props.isOpen, (newProps) => { console.log(newProps);//查看新值 } ); const closeModal = () => { context.emit("close-modal"); }; return { closeModal, }; },});
vue3.0监听props做数据回显
<template></template><script>import {defineComponent, reactive, watch} from 'vue';export default defineComponent({ name: "from", props: { record: { type: Object, default: null, } }, setup: function (props, context) { const formState = reactive({ headPic: '', nickname: '', password: '', username: '', roleDomainList: [] }); watch(props, (nweProps, oldProps) => { for (let item in formState) { formState[item] = nweProps.record[item]; } }); return { formState }; }})</script><style scoped></style>
感谢各位的阅读,以上就是“Vue3.0中怎么监听props”的内容了,经过本文的学习后,相信大家对Vue3.0中怎么监听props这一问题有了更深刻的体会,具体使用情况还需要大家实践验证。这里是编程网,小编将为大家推送更多相关知识点的文章,欢迎关注!