problem in not replaceing minus sign(-) with a blank using regex

I am using this regex expression to replace some characters with "" I used it as

query=query.replace(/[^a-zA-Z 0-9 * ? :  . + - ^ "" _]+/g,'');

But when my query 开发者_如何学Cis as +White+Diamond, i get result +White+Diamond, but when query is -White+diamond i am getting White+diamond, it means - is replaced by "" that i don't want. Please tell me what is the problem.

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In regex, - means "from ... to ...", escape your - with a backslash: \-.

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What SteeveDroz said:

query=query.replace(/[^a-zA-Z0-9*?:.+\-^"_ ]+/g,'');

I'm assuming you want to exclude spaces as well. If not, remove the final space from the character class.