问题总结21-02-15至21-02-21

⭐vue.config.js配置

https://www.jianshu.com/p/b358a91bdf2d

⭐css清除默认样式

/**
 * Eric Meyer's Reset CSS v2.0 (http://meyerweb.com/eric/tools/css/reset/)
 * http://cssreset.com
 */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header,
menu, nav, output, ruby, section, summary,
time, mark, audio, video, input {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, menu, nav, section {
    display: block;
}

body {
    line-height: 1;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
    content: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* custom */
a {
    color: #7e8c8d;
    text-decoration: none;
    -webkit-backface-visibility: hidden;
}

li {
    list-style: none;
}

::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track-piece {
    background-color: rgba(0, 0, 0, 0.2);
    -webkit-border-radius: 6px;
}

::-webkit-scrollbar-thumb:vertical {
    height: 5px;
    background-color: rgba(125, 125, 125, 0.7);
    -webkit-border-radius: 6px;
}

::-webkit-scrollbar-thumb:horizontal {
    width: 5px;
    background-color: rgba(125, 125, 125, 0.7);
    -webkit-border-radius: 6px;
}

html, body {
    width: 100%;
}

body {
    -webkit-text-size-adjust: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

⭐修改element-ui样式不可以用scoped

⭐div在屏幕居中

https://zhuanlan.zhihu.com/p/114396520

⭐word-spacing属性调整单词间距，letter-spacing属性调整字之间间距

⭐vue的跳转方式

https://www.cnblogs.com/mouseleo/p/11364333.html

⭐vue修改data里的数据

⭐JS获取各种浏览器窗口可视部分大小（可视部分不包含工具栏、标签栏等）

function getViewportSize(w){
  w= w || window;
  //除了IE8以及更早版本外，其它浏览器都能用
  if(w.innerWidth != null){ return { w:w.innerWidth, h:w.innerHeight } };
  //对标准模式下的IE或任何浏览器
  var d=w.document;
  if(document.compatMode == "CSS1Compat"){
    return { w:d.documentElement.clientWidth, 
             h:d.documentElement.clientHeight }
  }
  //对怪异模式下的浏览器
  return { w:d.body.clientWidth , h:d.body.clientHeight }
}
let aaa = getViewportSize(); 
aaa.w是可见宽度
aaa.h是可见高度

⭐vue通过data值改变css样式

https://blog.csdn.net/weixin_40829594/article/details/100977722

⭐vue监听浏览器窗口大小变化

<template>
  <section class="p-10">
    <h1> {{ screenWidth }} × {{ screenHeight }} </h1>
  </section>
</template>
<script>
  export default {
    data() {
      return {
        screenWidth: '',
        screenHeight: ''
      };
    },
    mounted() {
      this.screenWidth = document.body.clientWidth;
      this.screenHeight = document.body.clientHeight;
      window.onresize = () => {
        return (() => {
          this.screenWidth = document.body.clientWidth;
          this.screenHeight = document.body.clientHeight;
        })();
      };
    }
  }
</script>

<style lang="scss">
</style>

⭐做vue整页面轮播图时适配方法

<template>
  <div class="projectProgress">
    <el-carousel
      trigger="click"
      :height="height + 'px'"
      :interval="30000"
      indicator-position="none"
    >
      <el-carousel-item>
        <img
          :class="[isWidth ? 'isWidth' : 'isHeight']"
          src="http://zs-tek.com/static/img/projectProgress/1%E9%A1%B9%E7%9B%AE%E7%9C%8B%E6%9D%BF.png"
        />
      </el-carousel-item>
      <el-carousel-item>
        <img
          :class="[isWidth ? 'isWidth' : 'isHeight']"
          src="http://zs-tek.com/static/img/projectProgress/2%E9%A1%B9%E7%9B%AE%E5%BD%92%E6%A1%A3.png"
        />
      </el-carousel-item>
      <el-carousel-item>
        <img
          :class="[isWidth ? 'isWidth' : 'isHeight']"
          src="http://zs-tek.com/static/img/projectProgress/3%E4%BA%BA%E6%89%8D%E5%88%86%E5%B8%83.png"
        />
      </el-carousel-item>
      <el-carousel-item>
        <img
          :class="[isWidth ? 'isWidth' : 'isHeight']"
          src="http://zs-tek.com/static/img/projectProgress/4%E4%B8%93%E5%88%A9%E6%8A%80%E6%9C%AF.png"
        />
      </el-carousel-item>
    </el-carousel>
  </div>
</template>

<script>
export default {
  data() {
    return {
      height: 0,
       0,
      isWidth: true
    };
  },
  methods: {
    calculationHeight: function() {
      return window.document.documentElement.clientHeight;
    },
    calculationWidth: function() {
      return window.document.documentElement.clientWidth;
    }
  },
  created() {
    this.height = this.calculationHeight();
    this.width = this.calculationWidth();
    // console.log(this.calculationHeight(), this.calculationWidth());
    if (this.width / this.height > 16 / 9) {
      this.isWidth = false;
    } else {
      this.isWidth = true;
    }
  },
  mounted() {
    window.onresize = () => {
      return (() => {
        this.height = this.calculationHeight();
        this.width = this.calculationWidth();
        if (this.width / this.height > 16 / 9) {
          this.isWidth = false;
        } else {
          this.isWidth = true;
        }
      })();
    };
  }
};
</script>

<style>
.isWidth {
  max- 100vw;
}
.isHeight {
  max-height: 100vh;
}
.projectProgress .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 150px;
  margin: 0;
}
.projectProgress .el-carousel__item:nth-child(n) {
  background-color: #fff !important;
}
.projectProgress .el-carousel__button {
  background-color: #000 !important;
}
.projectProgress .el-carousel__arrow {
  background-color: rgba(0, 0, 0, 0.211) !important;
  color: #fff6 !important;
   60px;
  height: 60px;
  font-size: 40px;
}
.el-carousel__item {
  overflow: visible;
}
</style>