每个页面都需要加
<script>
(function (doc, win, width) {
var docEl = doc.documentElement,
resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
recalc = function () {
var clientWidth = docEl.clientWidth;
if (!clientWidth) return;
docEl.style.fontSize = 100 * (clientWidth / width) + 'px';
};
if (!doc.addEventListener) return;
win.addEventListener(resizeEvt, recalc, false);
doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window, 750);
</script>
图片懒加载
//img设置一个自定义属性，用来放真是的img路径。用getAttribute获取自定义属性的值
<script type="text/javascript">
var aImg = document.querySelectorAll('img');
var len = aImg.length;
var n = 0;//存储图片加载到的位置，避免每次都从第一张图片开始遍历
window.onscroll = function() {
scroll_on();
};
function scroll_on(){
var seeHeight = document.documentElement.clientHeight;
var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
for (var i = n; i < len; i++) {
if (aImg[i].offsetTop+500 < seeHeight + scrollTop) {
// if (aImg[i].getAttribute('src') == '') {
aImg[i].src = aImg[i].getAttribute('guoyu-src');
// }
n = i + 1;
console.log('n = ' + n);
}
}
}
scroll_on();
</script>
