Let's apply parameters once.
Applying it to the background-color-changing example we showed earlier might be even more helpful.
If you run the example you'll see —
whereas the previous example only changed the background,
this revised code now shows a different value in the popup window every time.
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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 function 5. (parameter 2) </title> |
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<script type="text/javascript"> |
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//<!CDATA[ |
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//parameter / values placed in parentheses so the function can receive them |
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function bg_change(c,n) |
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{ |
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document.bgColor=c; |
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alert(n); |
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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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<form method="post" action=""> |
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<p> |
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<input type="button" value="reset" onclick="bg_change('white',1)" /> |
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<input type="button" value="red" onclick="bg_change('red',2)" /> |
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<input type="button" value="yellow" onclick="bg_change('yellow',3)" /> |
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<input type="button" value="green" onclick="bg_change('green',4)" /> |
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</p> |
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</form> |
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</body> |
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</html> |
