1、你的数组的最后一项不能带逗号，这是语法错误
2、date如果以0开头，会被转成八进制的数字，也就是
0703 为十进制的 451
0903 因为包含大于8的数值，所以不会转
0521 为十进制的 337
3、所以要实现你的效果，简单一点就是如下
var xxxx = [{ year:2012, date:"0703" },
{ year:2012, date:"0930" },
{ year:2013, date:"1218" },
{ year:2013, date:"0521" }
]
// 如果要降序，只要所1和-1的返回值互换就好了
xxxx.sort(function(a,b){
if(a.year > b.year){
return 1
}else if(a.year < b.year){
return -1
}else{
if(a.date > b.date){
return 1
}else if(a.date < b.date){
return -1
}else{
return 0
}
}
})
判断当前页面是否在app内部打开，单纯的web前端还不能解决需要客户端对userAgent添加自己app相关的字段
(useragent设置Android：http://www.jincon.com/archives/354/)
(useragent设置IOS：http://www.jianshu.com/p/5f02451b8e87)
var userAgent = navigator.userAgent.toLowerCase(), //获取userAgent
isInapp = userAgent.indexOf("sunyuki")>=0//查询是否有相关app的相关字段
希望对你有帮助！
准备的材料分别是：chrome浏览器、电脑。1、首先打开chrome浏览器，点击菜单上的“设置”按钮。
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2、其次，鼠标拉到底部，点击底部的“高级”按钮。
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3、接着，点击“网站设置”按钮。
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4、从弹出的面板，再再点击“JavaScript”菜单。
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5、最后将“允许（推荐）”按钮打开，之后刷新页面即可生效。
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