JavaScript error ' expected identifier, string or number ' in Ie6,ie7

Problem:

The code works fine under Forefox and IE8, but the error is under IE6:

Expected identifier, string or number

If there are multiple options for a variable option, then we can separate it with commas, but the last option cannot have a comma. Although IE8 and Firefox can ignore this comma, but IE6 will be an error (it is said that the IE7 will also error)

Solution:

The workaround is simple, remove the extra comma.

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JavaScript error ' expected identifier, string or number ' in Ie6,ie7