当前位置： 首页 > news >正文

河南商务学校网站建设seo提高关键词

news 2025/7/27 16:19:46
河南商务学校网站建设,seo提高关键词,成都百度网站制作,评价一个网站的优缺点学习：vue插件开发实例-图片预览插件 vue2-pre-img-plugin的gitee代码 准备工作 准备图片与基础的样式 将iconfont下载的字体图标资源放在src/assets/iconfont目录下将准备预览的图片放到src/static/images目录下 PrevImg.vue 在plugins/PrevImg目录下&#xff…

学习：vue插件开发实例-图片预览插件
vue2-pre-img-plugin的gitee代码

准备工作

准备图片与基础的样式

  • 将iconfont下载的字体图标资源放在src/assets/iconfont目录下
  • 将准备预览的图片放到src/static/images目录下

PrevImg.vue

在plugins/PrevImg目录下，创建PrevImg.vue。

直接引入静态图片资源，然后作为vue组件实例的data

<template><div class="prev-container"><div class="mask"></div><div class="indicator"><i class="iconfont icon-jiahao1"></i><i class="iconfont icon-jian"></i><i class="iconfont icon-reset"></i><i class="iconfont icon-close"></i></div><div class="img-wrapper"><img :src="imgPath"></div></div>
</template><script>
import img1 from '@/static/images/1.jpg'
import img2 from '@/static/images/2.jpg'
import img3 from '@/static/images/3.jpg'
import img4 from '@/static/images/4.png'
import img5 from '@/static/images/5.png'console.log('PrevImg->img1',img1); // PrevImg->img1 /img/1.1a1b49d1.jpgexport default {name: 'PrevImg2',data() {return {imgPath: img1}},
}
</script><style lang="scss">.prev-container {position: fixed;top:0;left: 0;width: 100%;height: 100%;.mask {position: absolute;background-color: rgba(0,0,0,.3);width: 100%;height: 100%;z-index: -1;}.indicator {display: flex;justify-content: flex-end;padding: 20px;z-index: 100;i {padding: 10px;background-color: rgba(255,255,255,.3);border-radius: 50%;margin: 0 5px;cursor: pointer;}}.img-wrapper {position: absolute;top: 0;width: 100%;height: 100%;z-index: -1;display: flex;align-items: center;justify-content: center;img {max-height: 100%;max-width: 80%;transition: all 0.5s;}}}
</style>

App.vue

App.vue中使用改组件

<template><div id="app"><prev-img/></div>
</template><script>import PrevImg from '@/plugins/prevImg/PrevImg'export default {name: 'App',components: {PrevImg}
}
</script><style>
* {margin: 0;
}body {display: flex;flex-direction: column;
}.btn-box {text-align: center;margin-top: 20px;
}
</style>

静态效果

在这里插入图片描述

封装插件

修改PrevImg.vue

为按钮绑定相关的方法，图片的路径，将由外部传递过来

<template><div class="prev-container" v-show="isShow"><div class="mask"></div><div class="indicator"><i @click="operate('zoomIn')" class="iconfont icon-jiahao1"></i><i @click="operate('zoomOut')" class="iconfont icon-jian"></i><i @click="operate('rotate')" class="iconfont icon-reset"></i><i @click="close" class="iconfont icon-close"></i></div><div class="img-wrapper"><img :src="imgPath" :style="imgStyle" alt=""></div></div>
</template><script>export default {name: 'PrevImg',components: {},data() {return {isShow: false,imgPath: '',transform: {rotate: 0,scale: 1}}},computed:{imgStyle() {let {rotate, scale} = this.transformreturn {transform: `scale(${scale}) rotate(${rotate}deg)`}}},methods: {open({url}) {this.isShow = truethis.imgPath = url},close() {console.log('object');this.isShow = false},operate(command) {if(command == 'zoomIn') {this.transform.scale += 0.04} else if(command == 'zoomOut') {this.transform.scale -= 0.04} else if(command == 'rotate') {this.transform.rotate += 90} }}
}
</script><style lang="scss">.prev-container {position: fixed;top:0;left: 0;width: 100%;height: 100%;.mask {position: absolute;background-color: rgba(0,0,0,.3);width: 100%;height: 100%;z-index: -1;}.indicator {display: flex;justify-content: flex-end;padding: 20px;z-index: 100;i {padding: 10px;background-color: rgba(255,255,255,.3);border-radius: 50%;margin: 0 5px;cursor: pointer;}}.img-wrapper {position: absolute;top: 0;width: 100%;height: 100%;z-index: -1;display: flex;align-items: center;justify-content: center;img {max-height: 100%;max-width: 80%;transition: all 0.5s;}}}
</style>

定义插件逻辑

import PrevImg from '@/plugins/prevImg/PrevImg'export default {install(Vue, options) {let PrevImgConstructor = Vue.extend(PrevImg)let instance = new PrevImgConstructor()/* 这里会打印dom */console.log('instance', instance.$mount().$el);// instance <div class="prev-container" style="display: none;">...</div>/* 把组件转换成了dom，插入到了body中  */document.body.appendChild(instance.$mount().$el) let opts = {open(url) {// 调用组件实例上定义的方法instance.open({url})},close() {instance.close()}}// 挂载到vue组件实例上Vue.prototype.$prevImg = opts}
}

main.js中应用此插件

import Vue from 'vue'
import App from './App.vue'import '@/assets/iconfont/iconfont.css'
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';import prevImg from './plugins/prevImg';Vue.config.productionTip = falseVue.use(ElementUI)
Vue.use(prevImg)new Vue({render: h => h(App),
}).$mount('#app')

App.vue中使用此插件

<template><div id="app"><div class="btn-box"><el-button @click="preview">打开预览</el-button></div></div>
</template><script>
import img1 from '@/static/images/1.jpg'
import img2 from '@/static/images/2.jpg'
import img3 from '@/static/images/3.jpg'
import img4 from '@/static/images/4.png'
import img5 from '@/static/images/5.png'export default {name: 'App',components: {},methods: {preview() {// 原本测试的是把PrevImg.vue组件给引进来, 直接调用子组件的方法使用, 但// 是没想到插件还能这么玩的, 感觉那种方式会更好// this.$refs.prevImgRef.open()this.$prevImg.open(img4)}}
}
</script><style>
* {margin: 0;
}body {display: flex;flex-direction: column;
}.btn-box {text-align: center;margin-top: 20px;
}
</style>

在这里插入图片描述

图片预览列表

在这里插入图片描述

修改App.vue

<template><div id="app"><div class="btn-box"><el-button @click="preview">打开预览</el-button></div></div>
</template><script>
import img1 from '@/static/images/1.jpg'
import img2 from '@/static/images/2.jpg'
import img3 from '@/static/images/3.jpg'
import img4 from '@/static/images/4.png'export default {name: 'App',components: {},methods: {preview() {// this.$refs.prevImgRef.open()this.$prevImg.open(0,[img1,img2,img3,img4])}}
}
</script><style>
* {margin: 0;
}body {display: flex;flex-direction: column;
}.btn-box {text-align: center;margin-top: 20px;
}
</style>

修改插件逻辑

import PrevImg from '@/plugins/prevImg/PrevImg'
export default {install(Vue, options) {let PrevImgConstructor = Vue.extend(PrevImg)let instance = new PrevImgConstructor()/* 这里会打印dom */console.log('instance', instance.$mount().$el);// instance <div class="prev-container" style="display: none;">...</div>/* 把组件转换成了dom，插入到了body中  */document.body.appendChild(instance.$mount().$el) let opts = {open(imgIdx,imgPaths) {instance.open({imgIdx,imgPaths})},close() {instance.close()}}Vue.prototype.$prevImg = opts}
}

修改PrevImg.vue

<template><div class="prev-container" v-show="isShow"><div class="mask"></div><div class="indicator"><i @click="operate('zoomIn')" class="iconfont icon-jiahao1"></i><i @click="operate('zoomOut')" class="iconfont icon-jian"></i><i @click="operate('rotate')" class="iconfont icon-reset"></i><i @click="close" class="iconfont icon-close"></i></div><div :class="['prev-next', 'left', { 'pointer-allowd': isPrev }]" @click="operate('left')"><i class="iconfont icon-houtuishangyige"></i></div><div :class="['prev-next', 'right', { 'pointer-allowd': isNext }]" @click="operate('right')"><i class="iconfont icon-qianjinxiayige"></i></div><div ref="imgWrapper" :class="['img-wrapper']"><img :src="imgPaths[imgIdx]" :style="imgStyle" alt=""></div></div>
</template><script>export default {name: 'PrevImg',components: {},data() {return {isShow: false,imgIdx: 0,imgPaths: [],transform: {rotate: 0,scale: 1},enterAniClass: '',}},computed: {imgStyle() {let { rotate, scale } = this.transformreturn {transform: `scale(${scale}) rotate(${rotate}deg)`}},isNext() {return this.imgIdx != this.imgPaths.length - 1},isPrev() {return this.imgIdx != 0},},mounted() {this.$refs['imgWrapper'].addEventListener('webkitAnimationEnd', (e) => {console.log('动画停止了');this.enterAniClass = ''})},methods: {open({ imgIdx, imgPaths }) {this.isShow = truethis.imgIdx = imgIdxthis.imgPaths = imgPaths},close() {console.log('object');this.isShow = falsethis.transform = {rotate: 0,scale: 1}},operate(command) {if (command == 'zoomIn') {this.transform.scale += 0.04} else if (command == 'zoomOut') {this.transform.scale -= 0.04} else if (command == 'rotate') {this.transform.rotate += 90} else {this.transform = {rotate: 0,scale: 1}if (command == 'left') {if (this.imgIdx == 0) {return}this.imgIdx = this.imgIdx - 1} else if (command == 'right') {if (this.imgIdx == this.imgPaths.length - 1) {return}this.imgIdx = this.imgIdx + 1}}}}
}
</script><style lang="scss">
.prev-container {position: fixed;top: 0;left: 0;width: 100%;height: 100%;.mask {position: absolute;background-color: rgba(0, 0, 0, .3);width: 100%;height: 100%;z-index: -1;}.pointer-allowd {cursor: pointer !important;}.prev-next {width: 36px;height: 36px;border-radius: 50%;background-color: rgba(255, 255, 255, .3);text-align: center;line-height: 36px;cursor: not-allowed;position: absolute;top: 0;bottom: 0;margin: auto;z-index: 2000;}.left {left: 30px;}.right {right: 30px;}.indicator {display: flex;justify-content: flex-end;padding: 20px;z-index: 100;i {padding: 10px;background-color: rgba(255, 255, 255, .3);border-radius: 50%;margin: 0 5px;cursor: pointer;}}.img-wrapper {position: absolute;top: 0;width: 100%;height: 100%;z-index: -1;display: flex;align-items: center;justify-content: center;img {max-height: 100%;max-width: 80%;transition: all 0.5s;}}
}</style>
http://www.zhongyajixie.com/news/60458.html

相关文章：

  • wordpress 自动生成标签网站排名优化教程
  • 武汉电商网站建设合肥全网推广
  • 网站制作过程中碰到的问题网站流量统计分析
  • 无网站做cpa申请网站怎样申请
  • 公司建网站多少钱百度号码认证平台官网
  • 宝塔做网站443链接重庆网络seo公司
  • 网站建设与管理大纲天津seo排名公司
  • 南京市雨花台区建设局网站种子资源
  • qq网站官网2022拉新推广平台
  • 怎么做国际网站苏州seo培训
  • 怎样申请建立自助网站代理广告投放平台
  • 网站建设 碧辉腾乐建站小程序
  • 开发区网站建设色盲
  • 找个可以直接看的网站济南百度
  • 设计类专业包括哪些北京网站seo哪家公司好
  • 做网站如何月入10万自媒体平台哪个收益高
  • 公司网站建设手续今日足球赛事分析推荐
  • 网站不备案可以做微信小程序么怎么请专业拓客团队
  • 网站建设图标百度关键词刷搜索量
  • wordpress+禁用版本滕州网站建设优化
  • wordpress logy上海关键词排名优化怎样
  • 设计师网站哪个好南昌百度推广联系方式
  • 遵义网站制作和推广宣传推广方案模板
  • 网站开发与设计 需求分析导航网站怎么推广
  • 建一个购物网站要多少钱百度网盘客服在线咨询
  • 烟台市住房和城乡建设厅网站站长工具seo综合查询降级
  • 如何申请自己的个人网站百度一下你就知道下载
  • 顺的做网站便宜吗营销网站大全
  • 学做美食视频网站备案查询站长工具
  • 软件开发需要的软件郴州seo