Earlier, when we covered local variables,
how do you make a variable declared inside a function usable elsewhere?
Do you remember?
The answer is in the example below. :)
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ko" lang="ko"> |
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<head> |
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<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> |
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<title> User-defined Functions 3: Global Variables 3 </title> |
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<meta name="description" content=""> |
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<script type="text/javascript"> |
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//<!CDATA[ |
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function chk1() |
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{ |
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i=10; // dropping var makes it a global variable |
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alert(i); |
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} |
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function chk2() |
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{ |
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i=i+1; |
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alert(i) |
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} |
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//]]]]]]> |
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</script> |
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</head> |
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<body> |
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<p><input type="button" value="Button 1" onclick="chk1()" /></p> |
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<p><input type="button" value="Button 2" onclick="chk2()" /></p> |
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</body> |
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</html> |
