What is the meaning of "Invalid Argument" and what causes this error when debugging JavaScript in Internet Explorer? -

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i getting error when using getelementbyid(). won't post entire program since it's homework assignment, when comment out line of code don't more syntax errors. should looking in rest of code have caused problem?

document.getelementbyid("bugone").style.left = xpos + "px";

also- "invalid argument" error caused by?

"invalid argument" going runtime error, not syntax error. don't jump getelementbyid() culprit - have lot going on in 1 line of code. debugging, it's useful break complex statements:

var bugone = document.getelementbyid("bugone"); var left = xpos + "px"; bugone.style.left = left;

in ie8, if set bad value on style property, "invalid argument" error. i'm guessing xpos contains either undefined or nan. set breakpoint in debugger , examine value of xpos.


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