JavaScript测试日期(字符串格式)是否超过30天

也许是这样的:

var then = new Date("11/2/2009").getTime(),
    now  = new Date().getTime(),
    thirtyDaysInMilliseconds = 2592000000;
if (now - then > thirtyDaysInMilliseconds) { doSomething(); }

var olddate = "11/02/2009"
var dt = Date.parse( olddate );
return ( ( Date.getTime() - dt.getTime() ) < 2592000000 );