移动适配的几种方式

2,971
1.直接利用js适配
(function (doc, win) {
    var docEl = doc.documentElement,
      resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
      recalc = function () {
          var clientWidth = docEl.clientWidth;
          if (!clientWidth) return;
          docEl.style.fontSize = 100 * (clientWidth / 750) + 'px';
      };
    if (!doc.addEventListener) return;
 win.addEventListener(resizeEvt, recalc, false);
 doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);

例如:100px=1rem;10px=0.1rem;1px=0.01rem;

2.利用js+less适配

(function (win) {
    function setUnitA() {
        document.documentElement.style.fontSize = document.documentElement.clientWidth / 10 + "px";
    }
    var h = null;
    window.addEventListener("resize", function () { clearTimeout(h); h = setTimeout(setUnitA, 300); }, false);
    setUnitA();
})(window);

less:文件顶部定义@unit: 750/10rem,然后css全文件的单位直接用@unit。

例如:100px=100/@unit;10px=10/@unit;1px=1/@unit;

3.利用less适配。

html {
    font-size: 20px;
}
@media only screen and (min-width: 401px) {
    html {
        font-size: 25px !important;
    }
}
@media only screen and (min-width: 428px) {
    html {
        font-size: 26.75px !important;
    }
}
@media only screen and (min-width: 481px) {
    html {
        font-size: 30px !important;
    }
}
@media only screen and (min-width: 569px) {
    html {
        font-size: 35px !important;
    }
}
@media only screen and (min-width: 641px) {
    html {
        font-size: 40px !important;
    }
}
@unit: 40rem;
例如:100px=100/@unit;10px=10/@unit;1px=1/@unit;