switch case

Question

在js文件中使用switch case语句不起作用，改为if else就好使了，什么原因？var option; /* switch(obj._printSelectedOption){ case 1: case 8: option = "_navi"; break; case 2: case 7: option = "_navi_dis"; break; case 4: case 5: option = "_dis"; break; case 10: case 14: option = "_dcl"; break; case 11: case 16: option = "_dcl_dis"; break; case 12: case 15: option = "_navi_dcl"; break; case 13: case 17: option = "_navi_dcl_dis"; break; default: option = ""; break; }*/ if(obj._printSelectedOption ==1 ||obj._printSelectedOption ==8){ option = "_navi"; }else if(obj._printSelectedOption ==2 ||obj._printSelectedOption ==7){ option = "_navi_dis"; }else if(obj._printSelectedOption ==4 ||obj._printSelectedOption ==5){ option = "_dis"; }else if(obj._printSelectedOption ==10 ||obj._printSelectedOption ==14){ option = "_dcl"; }else if(obj._printSelectedOption ==11 ||obj._printSelectedOption ==16){ option = "_dcl_dis"; }else if(obj._printSelectedOption ==12 ||obj._printSelectedOption ==15){ option = "_navi_dcl"; }else if(obj._printSelectedOption ==13 ||obj._printSelectedOption ==17){ option = "_navi_dcl_dis"; }else{ option = ""; }