js error Object doesn't support this property or method reason analysis_javascript skills

js error:
Object doesn't support this property or method
Cause of the problem:
1: The js code uses the javascript keyword
2: The method name conflicts with the form or div form name
3 There is name="submit" in .button
4. When uploading pictures, it prompts: Object doesn't support this property or method
Cause: The version of AspJpeg installed on the server is lower than version 1.4.
Solution: Install the AspJpeg component of version 1.4 or above.

I also encountered this problem, and later found:

Copy the code The code is as follows:

function TfybxMoneyTotalCheck()
{
.....
var TfybxMoneyTotalCheck=0
}

The name of the function and the definition of var A name is the same. So this report is wrong. .