jsオペレータの実例コード

 
  
var $mfunc=function(){ 
  
return { 
  
//          ,    ,        , 
  
//1.ie6;2.ie7; 3.ie8;4.ie5.5;5,Firefox;6.chrome;7.Opera;8.Safari;0.         
  
//            
  
whichOS:function(){ 
  
var useragent=navigator.userAgent.toLowerCase(); 
  
return (/MSIE 6/i.test(useragent)==true&&1)|| 
  
(/MSIE 7/i.test(useragent)==true&&2)|| 
  
(/MSIE 8/i.test(useragent)==true&&3)|| 
  
(/MSIE 5/i.test(useragent)==true&&4)|| 
  
(/Firefox/i.test(useragent)==true&&5)|| 
  
(/Chrome/i.test(useragent)==true&&6)|| 
  
(/Opera/i.test(useragent)==true&&7)|| 
  
(/Safari/i.test(useragent)==true&&8)||0 
  
} 
  
} 
  
}()