javascript - how to create two different nameSpaces in one same nameSpace avoiding covering the first one? -


i want use 2 string(which dont know content) create 2 namespace.and dont want create new 1 if namespace exists. here code:

function createnamespace(namespace) {     var spacearr = namespace.split(".");     var curspace = window;      //judge if namespace exists.     var i;     for(i in spacearr)     {         curspace = curspace[spacearr[i]];         if(curspace)             window.alert("namespace1:" + namespace + "\ncurspace exists:" + curspace + "\ni:" + + "\nspacearr[i]:" + spacearr[i] + "|");         else         {             curspace = {};             window.alert("namespace1:" + namespace + "\ncurspace not found:" + curspace + "\ni:" + + "\nspacearr[i]:" + spacearr[i] + "|");             break;         }     }      //now curspace must have been created.     i++;     //window.alert("namespace2:" + namespace + "\ni:" + + "\nspacearr.length:" + spacearr.length);     //create namespace     for(;i < spacearr.length; i++)     {         //window.alert("namespace2:" + namespace + "\ni:" + + "\nspacearr.length:" + spacearr.length);         if(i == 0)         {             window[spacearr[i]] = {};             curspace = window[spacearr[i]];         }         else         {             //window.alert("namespace3:" + namespace + "\ncurspace[spacearr[i]]:" + curspace[spacearr[i]]);             curspace[spacearr[i]] = {};             curspace = curspace[spacearr[i]];         }     }     return curspace; }

the problem is,if send"mytest.mynamespace"and"mytest.monanamespace" func,it alert"curspace not found",which should "curspace exists:" when send "mytest.monanamespace" . can`t tell mistakes are,can tell me?

i think algorithm little complex. refactored little , added test , verified worked in console. have written code several times, pretty sure have hit requirements

function createnamespace(namespace) {     var spacearr = namespace.split(".");     var curspace = window;      //judge if namespace exists.     var = 0;     for(i = 0;i < spacearr.length; i++)     {         var next = spacearr[i];         console.log(curspace, next);         if(curspace[next] == undefined)         {             curspace[next] = {};             curspace = curspace[next]         }         else         {             curspace = curspace[next];         }     }      return curspace; } createnamespace("mytest.mynamespace"); console.log(mytest.mynamespace); mytest.mynamespace.myname = "leat hakkor"; createnamespace("mytest.monanamespace"); console.log(mytest.monanamespace); console.log(mytest.mynamespace.myname);

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