This time I will show you how to use the Vue component to implement the pop-up window function. What are the precautions for using the Vue component to implement the pop-up window function. The following is a practical case, let's take a look.
I have been using the element-ui framework recently and used the Dialog dialog component. The effect achieved is roughly the same as a pop-up component I made in my previous mobile project. Then I wanted to share with you the implementation method of this pop-up window component. The following article will guide you through the implementation of a pop-up window component.
The main content of this article will involve the implementation of pop-up window masks, the use of slot slots, props and $emit parameters, and the specific component codes are also uploaded. If you like it, you can like/follow and support it. I hope everyone can gain something from reading this article.
The final effect of the component
##Implementation steps
<template> <p class="dialog"> <!--外层的遮罩 点击事件用来关闭弹窗,isShow控制弹窗显示 隐藏的props--> <p class="dialog-cover back" v-if="isShow" @click="closeMyself"></p> <!-- transition 这里可以加一些简单的动画效果 --> <transition name="drop"> <!--style 通过props 控制内容的样式 --> <p class="dialog-content" :style="{top:topDistance+'%',width:widNum+'%',left:leftSite+'%'}" v-if="isShow"> <p class="dialog_head back"> <!--弹窗头部 title--> <slot name="header">提示信息</slot> </p> <p class="dialog_main" :style="{paddingTop:pdt+'px',paddingBottom:pdb+'px'}"> <!--弹窗的内容--> <slot name="main">弹窗内容</slot> </p> <!--弹窗关闭按钮--> <p class="foot_close" @click="closeMyself"> <p class="close_img back"></p> </p> </p> </transition> </p> </template>
background. The css of the specific content can be set according to your own needs.
<style lang="scss" scoped> // 最外层 设置position定位 .dialog { position: relative; color: #2e2c2d; font-size: 16px; } // 遮罩 设置背景层,z-index值要足够大确保能覆盖,高度 宽度设置满 做到全屏遮罩 .dialog-cover { background: rgba(0,0,0, 0.8); position: fixed; z-index: 200; top: 0; left: 0; width: 100%; height: 100%; } // 内容层 z-index要比遮罩大,否则会被遮盖, .dialog-content{ position: fixed; top: 35%; // 移动端使用felx布局 display: flex; flex-direction: column; justify-content: center; align-items: center; z-index: 300; } </style>
The above is a single slot It is called the default slot. The correct way to use the slot in the parent component is:
<my-component> <!--在my-component里面的所有内容片段都将插入到slot所在的DOM位置,并且会替换掉slot标签--> <!--这两个p标签,将替换整个slot标签里面的内容--> <p>这是一些初始内容</p> <p>这是更多的初始内容</p> </my-component>
<p class="dialog_head back "> <!--弹窗头部 title--> <slot name="header">提示信息</slot> </p> <p class="dialog_main " :style="{paddingTop:pdt+'px',paddingBottom:pdb+'px'}"> <!--弹窗的内容--> <slot name="main">弹窗内容</slot> </p>
The method of using the pop-up component slot in the parent component is as follows.
<dialogComponent> <p slot="header">插入到name为header的slot标签里面</p> <p class="dialog_publish_main" slot="main"> 这里是内容插入到子组件的slot的name为main里面,可以在父组件中添加class定义样式,事件类型等各种操作 </p> </dialogComponent>
Then bind the props data in the parent component.
<script> export default { props: { isShow: { //弹窗组件是否显示 默认不显示 type: Boolean, default: false, required:true, //必须 }, //下面这些属性会绑定到p上面 详情参照上面的html结构 // 如: :style="{top:topDistance+'%',width:widNum+'%'}" widNum:{ //内容宽度 type: Number, default:86.5 }, leftSite:{ // 左定位 type: Number, default:6.5 }, topDistance: { //top上边距 type: Number, default:35 }, pdt:{ //上padding type: Number, default:22 }, pdb:{ //下padding type: Number, default:47 } }, } </script>
<dialogComponent :is-show="status.isShowPublish" :top-distance="status.topNum"> </dialogComponent>
ps:props传递数据不是双向绑定的,而是 单向数据流 ,父组件的数据变化时,也会传递到子组件中,这就意外着我们不应该在子组件中修改props。所以我们在关闭弹窗的时候就 需要通过 $emit 来修改父组件的数据 ,然后数据会自动传到子组件中。
现在基本上弹窗组件都已实现的差不多了,还差一个弹窗的关闭事件,这里就涉及到子组件往父组件传参了。
4. $emit 触发父组件事件修改数据,关闭弹窗
Vue中在子组件往父组件传参,很多都是通过 $emit 来触发父组件的事件来修改数据。
在子组件中,在点击关闭,或者遮罩层的时候触发下面这个方法:
methods: { closeMyself() { this.$emit("on-close"); //如果需要传参的话,可以在"on-close"后面再加参数,然后在父组件的函数里接收就可以了。 } }
父组件中的写法:
<dialogComponent :is-show="status.isShowPublish" :top-distance="status.topNum" @on-close="closeDialog"> </dialogComponent> //"on-close是监听子组件的时间有没有触发,触发的时候执行closeDialog函数 methods:{ closeDialog(){ // this.status.isShowPublish=false; //把绑定的弹窗数组 设为false即可关闭弹窗 }, }
可以用弹窗组件实现下列这种信息展示,或者事件交互:
弹窗组件代码
上面是把弹窗的每个步骤拆分开来,一步步解析的,每一步都说的比较清楚了,具体连起来的话,可以看看 代码 ,再结合文章就能理的很清楚了。
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