$(function () {
var imglist = document.getElementsByTagName("img");
//安卓4.0+等高版本不支持window.screen.width，安卓2.3.3系统支持
var _width;
doDraw();
window.onresize = function () {
//捕捉屏幕窗口变化，始终保证图片根据屏幕宽度合理显示
doDraw();
}
function doDraw() {
_width = window.innerWidth;
for (var i = 0, len = imglist.length; i < len; i++) {
DrawImage(imglist[i], _width);
}
}
function DrawImage(ImgD, _width) {
var image = new Image();
image.src = ImgD.src;
image.onload = function () {
//限制，只对宽高都大于30的图片做显示处理
if (image.width > 30 && image.height > 30) {
if (image.width > _width) {
ImgD.width = _width;
ImgD.height = (image.height * _width) / image.width;
} else {
ImgD.width = image.width;
ImgD.height = image.height;
}
}
}
}
})
原文：/wanggc/p/4531140.html
