var test = (function(){
var self = {};
self.alert = function(){
console.log('this is alert')
}
//sleep
self.sleep = function(){},
self.extendJson = function(){},
self.formatParams = function(){},
self.httpAgent = function(){},
self.randomChar = function(){},
self.getCharLen = function(){},
self.subStr = function(){},
self.getPara = function(){},
self.subTime = function(){},//计算时间差，返回毫秒数
self.getUnixTime = function(){},//获取unix时间
self.formatTime = function(){},//时间格式化
self.getCookie = function(){},//获取cookie
self.setCookie = function(){},//设置cookis
self.getMeta = function(key){//获取meta标签内容
return document.querySelector('meta[name="'+key+']').getAttribute('content');
},
self.setMeta = function(key,des){//设置meta内容
document.querySelector('meta[name="'+key+']').setAttribute('content','des');
},
self.setMetaKey = function(des){
document.querySelector('meta[name="keywords"]').setAttribute('content',des.replace(/"/g,'”'));
},
self.setMetaDes = function(des){
document.querySelector('meta[name="description"]').setAttribute('content',des.replace(/"/g,'”'));
},
self.setSeo = function(title,keywords,des){
document.title = title+'-'+document.title;
self.setMetaKey(keywords);
self.setMetaDes(des);
}
return self;
}())
