✍ 寫一個擴展性較強的搜索主頁

時間 2020-06-13

標籤一個擴展性較強搜索主頁简体版

原文原文鏈接

前置

點擊按鈕切換搜索引擎
搜索框跟隨切換改變樣式
使用 vue 最快了

template

爲了方便擴展，使用 v-for 循環渲染出按鈕，綁定切換搜索引擎的 method ，傳入不一樣名稱以區別搜索引擎。按鈕的樣式也動態綁定。javascript

輸入框動態綁定樣式，在點擊按鈕切換搜索引擎時，搜索框綁定的樣式對應的 data 改變。css

<template>
  <section id="search-wrapper">
    <el-row class="search-wrapper-row">
      <el-row style="margin-bottom: 10px">
        <el-button
          size="mini"
          type="primary"
          v-for="(item, index) in source"
          @click="changeSource(item.name)"
          :key="index"
          :style="
                        `background:${item.color};border-color:${item.color}`
                    "
          >{{ item.name }}</el-button
        >
      </el-row>
      <el-input :placeholder="searchbarStyle.placeholder" :class="searchbarStyle.className" v-model="searchValue" clearable>
        <el-button @click="submit" slot="append" icon="el-icon-search"></el-button>
      </el-input>
    </el-row>
  </section>
</template>

script

datahtml

baseUrl 搜索引擎地址
searchValue input v-model 綁定的搜索內容
searchbarStyle 搜索框對應的樣式，值類型爲 Object, 方便擴展不一樣搜索框樣式
source 按鈕的樣式即名稱，數組對象, 方便按鈕擴展

methodsvue

changeSource 點擊按鈕時觸發，接收搜索引擎 name，內部使用 Map，匹配對應的函數，在函數中更改 baseUrl 和 searchbarStyle，因爲在 template 動態綁定了 searchbarStyle，這樣就能根據所選擇的搜索類型改變搜索框的樣式了。java

代碼塊較長，我將它摺疊

export default {
  data() {
    return {
      baseUrl: 'https://www.baidu.com/s?ie=UTF-8&wd=',
      searchValue: '',
      searchbarStyle: {
        className: 'baidu',
        placeholder: '百度一下，你就知道',
      },
      source: [
        {
          name: '百度',
          color: '#2932E1',
        },
        {
          name: '必應',
          color: '#0c8484',
        },
        {
          name: '搜狗',
          color: '#FF6F17',
        },
        {
          name: '谷歌',
          color: '#4285F4',
        },
        {
          name: 'NPM',
          color: '#EA4335',
        },
      ],
    }
  },
  methods: {
    changeSource(name) {
      const actions = new Map([
        [
          '百度',
          () => {
            this.baseUrl = 'https://www.baidu.com/s?ie=UTF-8&wd='
            this.searchbarStyle = {
              className: 'baidu',
              placeholder: '百度一下，你就知道',
            }
          },
        ],
        [
          '必應',
          () => {
            this.baseUrl = 'https://cn.bing.com/search?FORM=BESBTB&q='
            this.searchbarStyle = {
              className: 'bing',
              placeholder: '必應搜索',
            }
          },
        ],
        [
          '搜狗',
          () => {
            this.baseUrl = 'https://www.sogou.com/web?query='
            this.searchbarStyle = {
              className: 'sougou',
              placeholder: '搜狗搜索',
            }
          },
        ],
        [
          '谷歌',
          () => {
            this.baseUrl = 'https://www.google.com/search?q='
            this.searchbarStyle = {
              className: 'google',
              placeholder: 'Google Search',
            }
          },
        ],
        [
          'NPM',
          () => {
            this.baseUrl = 'https://www.npmjs.com/search?q='
            this.searchbarStyle = {
              className: 'npm',
              placeholder: 'Search Packages',
            }
          },
        ],
      ])
      actions.get(name)()
    },
    submit() {
      const url = this.baseUrl + this.searchValue
      window.open(url)
    },
  },
}

style

在 searchbarStyle 對象中有個 className 字段，input 會動態綁定與之對應的 css class。好比選擇百度時對應 .baidu, 選擇必應時對應 .bing etc. 因爲使用了 scss 預處理器，經過 @each 循環它們就行了。git

$sources-color: (
  baidu: #2932e1,
  bing: #0c8484,
  sougou: #ff6f17,
  google: #4285f4,
  npm: #ea4335,
);

$source-list: baidu bing sougou google npm;

@each $source in $source-list {
  .#{$source} {
    .el-input-group__append,
    input {
      border-color: map-get($sources-color, $source);
      &:hover {
        border-color: map-get($sources-color, $source);
      }
    }
    .el-icon-search {
      color: map-get($sources-color, $source);
      &:hover {
        border-color: map-get($sources-color, $source);
      }
    }
  }
}