Javascr ipt语言编写的表单验证，利用正则表达式校验格式等。实现文本框中英文数字校验，日期格式校验，邮箱、电话、手机校验-Javascr ipt form validation language, the use of regular expressions parity format. Alphanumeric text box to achieve parity, date format validation, mail, telephone, mobile phone and so on parity