Shoutbox

quote:

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Originally posted by CookieRevised

quote:

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Originally posted by roflmao456
@cookie: that enumeration for status code you posted returns undefined if like variable[MyStatus]. using it like variable.STATUS_ONLINE will work, however.

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blame matty, he posted it, not me

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Ah yes, you can't use the value of a variable or expression as identifier for a property when you're defining an object literal. "STATUS_ONLINE" is interpreted as a string identifier for the property, it does not take the value of STATUS_ONLINE to use as identifier.

Here are some example snippets, for those interested in what went wrong here:

Javascript code:

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var key = "123";
var obj = {
    key : "abc"
};
// obj.key or obj["key"] equals "abc"
// obj[key] is undefined
 
var obj = {
    "key" : "abc"
};
// same object as above
 
var i = 0;
var obj = {
    (i++) : "first",
    (i++) : "second"
};
// gives a syntax error
// property identifier must be a constant number or string
 
var i = 0;
var obj = {};
obj[i++] = "first";
obj[i++] = "second";
// this will work though, the square brackets can take both constant or variable values

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