js小技巧

1.将字符串类型转成整型。转为10进制的整型。
  if(parseInt(m,10)>parseInt(moneyTemp,10))

 

2.js获取字节数，汉字为两个字节
    function getBytesCount(str)
        {
                var bytesCount = 0;
                if (str != null)
                {
                        for (var i = 0; i < str.length; i++)
                        {
                                var c = str.charAt(i);
                                if (/^[\u0000-\u00ff]$/.test(c))
                                {
                                        bytesCount += 1;
                                }
                                else
                                {
                                        bytesCount += 2;
                                }
                        }
                }
                return bytesCount;
        }