Internet Explorer’s Trailing Comma Woes
Internet Explorer is notorious for breaking on trailing commas in JavaScript array declaration. e.g.
var obj = {
a: 1,
b: 2,
};
fails on IE, while all other browsers just ignore the innocuous trailing comma after second element.
Weeding out these commas from JavaScript code is absolute PITA. However, here is a regular expression search string I wrote to search such instances in the code.
,\s*\n+\s*[\}\)\]]
Even better,
,\s*\n+(\s*\/\/.*\n)*\s*[\}\)\]]
matches multiple new lines and comments.
