Target IE7 with jQuery

I am trying to target IE7 with an if statement in a jQuery function. My code to this specific bit is:

if($.browser.msie &a开发者_开发技巧mp;& $.browser.version.substring(0) == "7") {
    //Do something
}

Is this correct?

Try:

if($.browser.msie && parseInt($.browser.version, 10) == 7) {
    //Do something
}   

And as @Andrew Whitaker comments, instead of targeting a specific browser, consider detecting features instead.