Javascript Uncaught ReferenceError: parameter is not defined

I have some Javascript code:

function addRow(tableID, rowId) {
var table = document.getElementById(tableID);
var rowPosition = document.getElementById(rowID).rowIndex;
//etc.
}

But this throws a Javascript error

"Uncaught ReferenceError: rowID is not defined"

Though looking on Firebug, I can see that the functions receives a corr开发者_如何学Pythonect row identifier, but once the code reaches the second line inside the function the parameter rowID seems unknown.

Can anyone help?

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JavaScript is case-sensitive. You've used rowId as the argument name (small "d") while inside the function you have rowID (capital "D"). Change the argument to rowID to fix the issue.

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You're passing the parameter rowId, but referencing it rowID. Variable names are case sensitive, they both need to be the same.