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Variable is undefined after out from the function block

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Mar 21.2007

Dear fellow developers,

I would like to know how to use the variable same out from the function block.?

1 var tmp;
2 function handleRequest(obj) {
3 var writeroot;
4 writeroot = obj.responseText;
5 tmp = writeroot;
6 }
7 document.write (tmp);

The variable at line 7 shown me “undefined” message,
please advice how to make the variable tmp have the same value with “writeroot”.

Thank you.

KY

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JavaScript

3 Comments(s) ↴

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@CrazyMerlinMar 21.2007 — where is the line that shows you running the function?
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@Tweak4Mar 21.2007 — The problem is your first line. You are instantiating the variable "tmp", but not giving it an initial value. Since lines 2-6 are a function, they aren't processed immediately, and when line 7 executes, tmp still doesn't have a value (hence the "undefined").

If you replace line 1 with:

var tmp = "temporary value we don't care about";

line 7 will display that.
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@kyfooauthorApr 05.2007 — Dear Tweak4,

I tried the suggestion you given to me.

By assign tempolary string to "tmp" at lione 1 as

var tmp = "tempolary value";

The value shown by line 6 have the value "tempolary value" instead of the new value from the function line 2 to line 6
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