http://www.moe.gov.cn/images/h5.js

1var phoneWidth = parseInt(window.screen.width),
2	_phoneWidth = document.documentElement.clientWidth,
3	_isIpad = /iPad/.test(navigator.userAgent);
4
5var htmlEleO = document.getElementsByTagName('html')[0];
6
7var phoneScale = phoneWidth / 750;
8var ua = navigator.userAgent;
9if (/Android (\d+\.\d+)/.test(ua)) {
10	var version = parseFloat(RegExp.$1);
11	if (version > 2.3) {
12		document.write('<meta name="viewport" content="width=750, minimum-scale = ' + phoneScale + ', maximum-scale = ' + phoneScale + ', target-densitydpi=device-dpi">')
13	} else {
14		document.write('<meta name="viewport" content="width=750, target-densitydpi=device-dpi">')
15	}
16}
17if(htmlEleO.getAttribute('data-notmobile')){
18	document.addEventListener('DOMContentLoaded',function(){
19		var pageWidth = (document.getElementsByTagName('body')[0])&&document.getElementsByTagName('body')[0].clientWidth;
20		var meta = document.createElement('meta');
21		meta.setAttribute('name','viewport');
22		meta.setAttribute('content','width='+pageWidth+', user-scalable=no, target-densitydpi=device-dpi');
23		document.getElementsByTagName('head')[0].appendChild(meta);
24	},false);
25}else{
26	if (_phoneWidth == 1194 && _isIpad) {

27		document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" id="meta_pad_fun">')
28	} else if (_phoneWidth == 1024 && _isIpad) {
29		document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" id="meta_pad_fun">')
30	} else if (phoneWidth > 992) {
31		document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">')
32	} else if (_phoneWidth == 768 && _isIpad) {
33		document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" id="meta_pad_fun">')
34	} else if (phoneWidth == 834 && _isIpad) {
35		document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" id="meta_pad_fun">')
36	} else {
37		document.write('<meta name="viewport" content="width=750, user-scalable=no, target-densitydpi=device-dpi">')
38	}
39}
40
41
42
43if(window.addEventListener){/*防止pc ie8 报错*/
44window.addEventListener("onorientationchange" in window ? "orientationchange" : "resize", function() {
45	var a = document.getElementById('meta_pad_fun');
46	if (a != null) {
47		if (phoneWidth == 834) {
48			if (window.orientation === 180 || window.orientation === 0) {
49				a.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no')
50			}
51			if (window.orientation === 90 || window.orientation === -90) {
52				a.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no')
53			}
54		} else {
55			if (window.orientation === 180 || window.orientation === 0) {
56				a.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no')
57			}
58			if (window.orientation === 90 || window.orientation === -90) {
59				a.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no')
60			}
61		}
62	}
63}, false);
64}