vue 片懒加载怎么弄,vue怎么预加载片

v-lazy 表示在图片没有出来之前，会有loding的图标去占位

步骤1.安装插件

npm i vue-lazyload -S

步骤2.全局配置 在main.js中设置

// 懒加载，在图片数据还没有更新之前显示的loding图片，----import VueLazyload from 'vue-lazyload'Vue.use(VueLazyload, {// 第一种 直接设置图片 小公司----弊端:图片是盗取的，稳定性差// loading: "https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=3266227385,3580863888&fm=26&gp=0.jpg",// 第二种 引入内部的----常用 loading:'/localLazy/loading-bubbles.svg' //(在public中创建了 localLazy文件夹，里面文件后缀为svg,文件内容见步骤四)});

步骤3.设置需要显示的图片

<div class="left"> <!-- 在img标签中，数据。直接加 v-lazy前缀即可 例： --> <img v-lazy="item.poster"/> </div>

步骤4…步骤2中 localLazy文件夹，为自己配置的样式，文件后缀为 svg

以下为代码 可直接复制使用 为动图

第一个

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32" fill="#ee7a23"> <path transform="translate(2)" d="M0 12 V20 H4 V12z"> <animate attributeName="d" values="M0 12 V20 H4 V12z; M0 4 V28 H4 V4z; M0 12 V20 H4 V12z; M0 12 V20 H4 V12z" dur="1.2s" repeatCount="indefinite" begin="0" keytimes="0;.2;.5;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.8 0.4 0.8" calcMode="spline" /> </path> <path transform="translate(8)" d="M0 12 V20 H4 V12z"> <animate attributeName="d" values="M0 12 V20 H4 V12z; M0 4 V28 H4 V4z; M0 12 V20 H4 V12z; M0 12 V20 H4 V12z" dur="1.2s" repeatCount="indefinite" begin="0.2" keytimes="0;.2;.5;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.8 0.4 0.8" calcMode="spline" /> </path> <path transform="translate(14)" d="M0 12 V20 H4 V12z"> <animate attributeName="d" values="M0 12 V20 H4 V12z; M0 4 V28 H4 V4z; M0 12 V20 H4 V12z; M0 12 V20 H4 V12z" dur="1.2s" repeatCount="indefinite" begin="0.4" keytimes="0;.2;.5;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.8 0.4 0.8" calcMode="spline" /> </path> <path transform="translate(20)" d="M0 12 V20 H4 V12z"> <animate attributeName="d" values="M0 12 V20 H4 V12z; M0 4 V28 H4 V4z; M0 12 V20 H4 V12z; M0 12 V20 H4 V12z" dur="1.2s" repeatCount="indefinite" begin="0.6" keytimes="0;.2;.5;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.8 0.4 0.8" calcMode="spline" /> </path> <path transform="translate(26)" d="M0 12 V20 H4 V12z"> <animate attributeName="d" values="M0 12 V20 H4 V12z; M0 4 V28 H4 V4z; M0 12 V20 H4 V12z; M0 12 V20 H4 V12z" dur="1.2s" repeatCount="indefinite" begin="0.8" keytimes="0;.2;.5;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.8 0.4 0.8" calcMode="spline" /> </path></svg>

第二个

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32" fill="#ee7a23"> <circle transform="translate(8 0)" cx="0" cy="16" r="0"> <animate attributeName="r" values="0; 4; 0; 0" dur="1.2s" repeatCount="indefinite" begin="0" keytimes="0;0.2;0.7;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.6 0.4 0.8" calcMode="spline" /> </circle> <circle transform="translate(16 0)" cx="0" cy="16" r="0"> <animate attributeName="r" values="0; 4; 0; 0" dur="1.2s" repeatCount="indefinite" begin="0.3" keytimes="0;0.2;0.7;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.6 0.4 0.8" calcMode="spline" /> </circle> <circle transform="translate(24 0)" cx="0" cy="16" r="0"> <animate attributeName="r" values="0; 4; 0; 0" dur="1.2s" repeatCount="indefinite" begin="0.6" keytimes="0;0.2;0.7;1" keySplines="0.2 0.2 0.4 0.8;0.2 0.6 0.4 0.8;0.2 0.6 0.4 0.8" calcMode="spline" /> </circle></svg>

第三个

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 14 32 18" width="32" height="4" fill="#f20" preserveAspectRatio="none"> <path opacity="0.8" transform="translate(0 0)" d="M2 14 V18 H6 V14z"> <animateTransform attributeName="transform" type="translate" values="0 0; 24 0; 0 0" dur="2s" begin="0" repeatCount="indefinite" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </path> <path opacity="0.5" transform="translate(0 0)" d="M0 14 V18 H8 V14z"> <animateTransform attributeName="transform" type="translate" values="0 0; 24 0; 0 0" dur="2s" begin="0.1s" repeatCount="indefinite" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </path> <path opacity="0.25" transform="translate(0 0)" d="M0 14 V18 H8 V14z"> <animateTransform attributeName="transform" type="translate" values="0 0; 24 0; 0 0" dur="2s" begin="0.2s" repeatCount="indefinite" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </path></svg>

第四个

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="64" height="64" fill="#dd7479"> <circle cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(45 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.125s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(90 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.25s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(135 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.375s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(180 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.5s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(225 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.625s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(270 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.75s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(315 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.875s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle> <circle transform="rotate(180 16 16)" cx="16" cy="3" r="0"> <animate attributeName="r" values="0;3;0;0" dur="1s" repeatCount="indefinite" begin="0.5s" keySplines="0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8;0.2 0.2 0.4 0.8" calcMode="spline" /> </circle></svg>