原生alert的缺点
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会阻塞一切操作,影响用户体验
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很多浏览器会默认静止alert,例如微信。
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原生alert框样式丑陋。
demo地址: 用力点我
项目地址: web-style 希望大家多多关注。项目里有css样式和vue组件。目标是快速构建后台系统。有一定自适应的设计。
css
思路:最外层是一个黑色透明撑满全屏幕的div并且是fixed的 div.modal-mask 。
在mask内部是一个垂直居中的div框大小可以固定。垂直居中方法有几种可选。我选用的是flex。关键性的css代码如下
.modal-mask{ position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(55,55,55,.6); z-index: 100; display: flex; align-items: center; justify-content: center;}.modal-confirm{ width: 400px; box-sizing: border-box; padding: 30px 40px; background-color: #fff; border-radius: 6px;}@media only screen and (max-width: 640px) { .modal-confirm{ width: 100%; margin: 0 20px; padding: 10px 20px; }}
其中 modal-confirm 是alert框,有固定的宽度400px 还有padding。 然后我们做了一个小小的自适应。 在小屏上(屏幕宽度小于640px)取消了固定宽度。减少了padding的值,看起来更小巧。
开发vue组件
vue template
首先我希望这个组件功能能像原生的alert事件一样随时随地的方便调用。 不希望每次都 new Vue({}) 一个实例。 所以我做了一些不一样的设计。
<div class="modal-mask" v-show="show"> <div class="modal-confirm"> <h2 id="i-class-iconfont-icon-questioncircle-i-title"> <i class="iconfont icon-questioncircle"></i> {{ title }} </h2> <div class="confirm-content"> {{ content }} </div> <div class="confirm-btns"> <button class="btn" @click="op(1)">取 消</button> <button class="btn btn-primary" @click="op(2)">确 定</button> </div> </div> </div>
v-show 是控制alert组件的显示和隐藏的指令。 {{ }} 是vue默认的模版标记。
@click 是绑定click事件的指令
vue data
new Vue({ el: '#V-confirm', data: { show: false, onCancel: false, onOk: false, title: '', content: '' } })
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show 是控制显示隐藏的标记。
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onCancel onOk 是点击取消或者确定时候触发的回调。
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title content 是alert显示的文本。
vue methods
methods: { op(type){ this.show = false if(type == '1'){ if(this.onCancel) this.onCancel() }else{ if(this.onOk) this.onOk() } this.onCancel = false this.onOk = false document.body.style.overflow = '' }, alert(setting){ this.title = setting.title || '标题' this.content = setting.content || '内容' this.onOk = setting.onOk || false this.onCancel = setting.onCancel || false this.show = true document.body.style.overflow = 'hidden' } } }
alert(setting) 方法是控制显示alert组件的方法。接受一个object的参数配置。
op(type) 方法是点击取消和确定按钮的时候触发的时候。
hack代码
var element = document.createElement('div'); element.id = 'V-confirm' element.innerHTML = template document.body.appendChild(element)
这一段代码作用是一开始就把vue实例插入到 body 底部,方便直接 alert 调用。
加入一些动画效果
依赖的是vue指令 transition 具体的用法教程 大家去 过渡-传送门
.modal-enter, .modal-leave { opacity: 0;}.modal-transition{ transition: all .3s ease;}.modal-enter .modal-confirm,.modal-leave .modal-confirm { transform: scale(1.1);}.modal-transition{ transition: all .3s ease;}
用法
var setting = {} setting.title = '你确定删除吗?' setting.content = '删除不可以恢复...' setting.onOk = function(){} setting.onCancel = function(){} $confirm.alert(setting)

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HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.


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