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【前端庫】html 移動端適配(meta方法)

案例單擊我

js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 || (lib.flexible = {});

    if
(metaEl) { 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 isAndroid = 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(){ var width = docEl.getBoundingClientRect().width; if (width / dpr > 540) { width = 540 * dpr; } var rem = width / 10; docEl.style.fontSize = rem + 'px'; flexible.rem = win.rem = rem; } win.addEventListener('resize', function() { clearTimeout(tid); tid = setTimeout(refreshRem, 300); }, 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 = function(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'] = {}));

// 直接引入js檔案後

適配方法

  • 必須得在html頁面中使用meta。
  • 必須引入js,最好是在head裡面引入,因為,當頁面載入特別慢得時候,可以讓適配得頁面樣式展示好看點

最大寬度為 10rem。以750得設計圖,就是 750/10 = 75; 那麼設計圖中有寬度為120px得寬度,那麼就是 120px /75 = 1.6rem

此處應該貼上程式碼:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta content="yes" name="apple-mobile-web-app-capable">
    <meta content="yes" name="apple-touch-fullscreen">
    <meta content="telephone=no,email=no" name="format-detection">
    <meta name="flexible" content="initial-dpr=2" />
    <script src="flexible.js"></script>
    <style type="text/css">
    button {
        -webkit-appearance: none;
        border-radius: 0;
    }
    element::-webkit-scrollbar{
        display: none;
    }
        * {
            margin: 0;
            padding: 0;
        }
        .box {
            width: 4rem;
            height: 1.6rem;
            background: red;
        }
        body {
            background: #eeeeee;
        }
        .wap-box {
            width: 10rem;
            margin: 0 auto;
            background-color: #fff;
        }
    </style>
</head>
<body>
    <div class="wap-box">
        <div class="box">

        </div>
    </div>
    <script type="text/javascript">
        // $("body").css("height",parseInt($(".wrap").height())+parseInt($(".icon-main").height()));
    </script>
</body>
</html>