我需要在JS中创建一个变量名称...
obj = {};
obj.fooonex = {};
obj.fooonex.start = 1;
obj.fooonex.end = 2;
a = "foo";
b = "one";
c = "x";
test = a + b + c;
alert(obj.test.start);
我希望结果为“1”
答案 0 :(得分:10)
你需要这样做:
alert(obj[test].start);
答案 1 :(得分:-1)
通用2修复,即更强大的解决方案
goops!甚至每件事都是字符串!!!
从上面的问题我扩展objectname,propertyname为字符串Jang! ... 强>
objectname = "obj";
propertyname = "start";
//尝试提醒(get(objectname +“。”+ test +“。”+ propertyname));
function get(path) {
var next = window;
path = path.split(/[\[\]\.]+/);
if (path[path.length - 1] == "") {
path.pop();
};
while (path.length && (next = next[path.shift()]) && typeof next === "object" && next !== null);
return path.length ? undefined : next;
}
另一个
function getPropertyValueByPath (obj, path)
{
path = path.split(/[\[\]\.]+/);
if(path[path.length - 1] == "")
{
path.pop();
};
while(path.length && ( obj = obj[path.shift()]));
return obj;
}
用法
alert(getPropertyValueByPath(obj,test+ "." + propertyname ));
alert(get(objectname + "." + test + "." +propertyname));
非推荐方式
eval(objectname + "." + test + "." +propertyname )
Another way `eval("obj." + test + ".start")`
a way of insecure and non-advised eval()