IE6,IE7,IE8 Report JS Error: expected identifier, string or number causes and solutions

Today when debugging a page encountered a problem, in the IE9 Run a good script, in the IE8 Open when the error pop:expected identifier, String ornumber, according to experience, should be defined when the object is the end of the last property followed by a comma, but after checking it again did not find that this situation, and then carefully looked at the location of the error, found that there is a definition of JSON Object attributes, attribute names are not enclosed in quotation marks, so add up and try again, the problem is solved.

In summary, when an error occurs expected identifier, string or number, you should first check whether the last property followed by a comma when using the object literal, which is in JS The new handwritten code is more common, such as:

{' A ': ' Avalue ', ' B ': ' BValue ',}

, second, you should check that the literal attribute name is enclosed in quotation marks, and the error example:

{A: ' Avalue ', B: ' BValue '}

Change to:

{' A ': ' Avalue ', ' B ': ' BValue '}

The problem is solved.