Question

我想使用两个字符串（如果nameSpace存在，我想要t know their content) to create two nameSpace.And i don想创建一个新字符串。这是我的代码：

function createNameSpace(nameSpace)
{
    var spaceArr = nameSpace.split(".");
    var curSpace = window;

    //judge if this nameSpace exists.
    var i;
    for(i in spaceArr)
    {
        curSpace = curSpace[spaceArr[i]];
        if(curSpace)
            window.alert("nameSpace1:" + nameSpace + "\ncurSpace do exists:" + curSpace + "\ni:" + i + "\nspaceArr[i]:" + spaceArr[i] + "|");
        else
        {
            curSpace = {};
            window.alert("nameSpace1:" + nameSpace + "\ncurSpace not found:" + curSpace + "\ni:" + i + "\nspaceArr[i]:" + spaceArr[i] + "|");
            break;
        }
    }

    //now curSpace must have been created.
    i++;
    //window.alert("nameSpace2:" + nameSpace + "\ni:" + i + "\nspaceArr.length:" + spaceArr.length);
    //create the nameSpace
    for(;i < spaceArr.length; i++)
    {
        //window.alert("nameSpace2:" + nameSpace + "\ni:" + i + "\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;
}

问题是，如果我将“myTest.myNameSpace”和“myTest.monaNameSpace”发送到此函数中，它会发出“curSpace not found”，当我发送“myTest.monaNameSpace”时应该是“curSpace do exists：” “。我不知道错误在哪里，有人可以告诉我吗？

Answer 1

我认为你的算法有点复杂。我稍微重构了一下并添加了测试并验证它在控制台中工作。我也多次写过这段代码，所以我很确定我已达到你的要求

function createNameSpace(nameSpace)
{
    var spaceArr = nameSpace.split(".");
    var curSpace = window;

    //judge if this nameSpace exists.
    var i = 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);

如何在同一个名称空间中创建两个不同的nameSpace，避免覆盖第一个？

1 个答案: