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Vue2.0實現自適應解析度

本文例項為大家分享了2.0實現自適應解析度的具體程式碼,供大家參考,具體內容如下

1. 前臺框架:Vue2.0+elementUI 2.15.7

2. 開發工具:vs code

3. 安裝所需架包:

"post-import": "12.0.1",
"postcss-loader": "4.0.1YXNzw",
"postcss-pxtorem": "^5.1.1",

檢查是否安裝“flexible”架包,安裝了需解除安裝或者取消引用,該架包檔案會和修改過的“flexible”檔案衝突。

4. 建立flexibleEx.檔案(該檔案是修改flexible架包的flexible.js檔案,可以根據需求自行修改),放置在所需要的隨意位置,如:“/src/utils”目錄下面。

然後將“flexibleEx.js”引入到“main.js”中,如:

import '@/utils/flexibleEx.js'

檔案程式碼:

(function(win,lib) {
  var doc = win.document
  var docEl = doc.documentElement
  var metaEl = doc.querySelector('meta[name="viewport"]')
  var flexibleEl = doc.querySelector('meta[name="flexible"]')
  var dpr = 0
  var scale = 0
  var tid
  var flexible = lib.flexible |www.cppcns.com
| (lib.flexible = {}) if (metaEl) { console.warn('將根據已有的meta標籤來設定縮放比例') var match = metaEl .getAttribute('content') .match(/initial\-scale=([\d\.]+)/) if (match) { scale = parseFloat(match[1]) dpr = parseInt(1 / scale) } } else if (flexibleEl) { var content = flexibleEl.getAttribute('content') if (content) { var initialDpr = content.match(/initial\-dpr=([\d\.]+)/) var maximumDpr = content.match(/maximum\-dpr=([\d\.]+)/) if (initialDpr) { dpr = parseFloat(initialDpr[1]) scale = parseFloat((1 / dpr).toFixed(2)) } if (maximumDpr) { dpr = parseFloat(maximumDpr[1]) scale = parseFloat((1 / dpr).toFixed(2)) } } } if (!dpr && !scale) { var is = win.navigator.appVersion.match(/android/gi) var isIPhone = win.navigator.appVersion.match(/iphone/gi) var devicePixelRatio = win.devicePixelRatio if (isIPhone) { // iOS下,對於2和3的屏,用2倍的方案,其餘的用1倍方案 if (devicePixelRatio >= 3 && (!dpr || dpr >= 3)) { dpr = 3 } else if (devicePixelRatio >= 2 && (!dpr || dpr >= 2)) { dpr = 2 } else { dpr = 1 } } else { // 其他裝置下,仍舊使用1倍的方案 dpr = 1 } scale = 1 / dpr } docEl.setAttribute('data-dpr',dpr) if (!metaEl) { metaEl = doc.createElement('meta') metaEl.setAttribute('name','viewport') metaEl.setAttribute( 'content','initial-scale=' + scale + ',maximum-scale=' + scale + ',minimum-scale=' + scale + ',user-scalable=no' ) if (docEl.firstElementChild) { docEl.firstElementChild.appendChild(metaEl) } else { var wrap = doc.createElement('div') wrap.appendChild(metaEl) doc.write(wrap.innerHTML) } } function refreshRem() { const whiteList = [ '/managementKanban','/productionKanban','/controlBoard','/main' ] // 不重定向白名單路由 var width = docEl.getBoundingClientRect().width var rem = 0 var hrefList = window.location.href.split('/') var url = hrefList[hrefList.length - 1] var url0 = url.split('?') var urlEnd if (url0.length > 0) { urlEnd = url0[0] } if (!whiteList.includes('/' + urlEnd)) { if (width / dpr <= 1980 && width / dpr > 768) { width = 1980 * dpr rem = width / 48 } else if (width / dpr >= 5760) { width = 5760 * dpr rem = width / 48 } else { width = 540 * dpr rem = width / 20 } docEl.style.fontSize = rem + 'px' flexible.rem = win.rem = rem } } win.addEventListener( 'resize',function() { clearTimeout(tid) tid = setTimeout(refreshRem,300) },false ) win.addEventListener( 'DOMNodeInserted',50) },false ) win.addEventListener( 'pageshow',function(e) { if (e.persisted) { clearTimeout(tid) tid = setTimeout(refreshRem,300) } },false ) if (doc.readyState === 'complete') { doc.body.style.fontSize = 12 * dpr + 'px' } else { doc.addEventListener( 'DOMContentLoaded',function(e) { doc.body.style.fontSize = 12 * dpr + 'px' },false ) } refreshRem() flexible.dpr = win.dpr = dpr flexible.refreshRem = refreshRem flexible.rem2px = functio
n(d) { var val = parseFloat(d) * this.rem if (typeof d === 'string' && d.match(/rem$/)) { val += 'px' } return val } flexible.px2rem = function(d) { var val = parseFloat(d) / this.rem if (typeof d === 'string' && d.match(/px$/)) { val += 'rem' } return val } })(window,window['lib'] || (window['lib'] = {}))

5. 修改“build/utitls.js”檔案,新增程式碼:

function generateLoaders(loader,loaderOptions) {
    const loaders = options.usePostCSS ? [cssLoader] : [cssLoader];
 
    if (loader) {
      loaders.push({
        loader: loader + "-loader",options: Object.assign({},loaderOptions,{
          sourceMap: options.sourceMap
        })
      });
    }
 
    // Extract CSS when that option is specified
    // (which is the case during production build)
    if (options.extract) {
      return ExtractTextPlugin.extract({
        use: loaders,fallback: "vue-style-loader",publicPath: "../../"
      });
    } else {
      return ["vue-style-loader"].concat(loaders);
    }
  }

6. 修改更目錄下面“postcssrc.js”

module.exports = {
    plugins: {
        'autoprefixer': {
            overrideBrowserslist: [
                'Android 4.1','iOS 7.1','Chrome > 31','ff > 31','ie >= 8'
            ]
        },'postcss-pxtorem': {
            rootValue: 37.5,propList: ['*']
        }
    }
}

7. 注:介面自適應問題已經解決,但是介面呈現還會出現一些問題,現在需要自行修改異常介面,介面開發儘量使用rem,樣式儘量不要使用內聯樣式,這些都需要手動修改

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。