正则表达式(1)

HTML代码的屏蔽  function mask_HTMLCode(strInput) {    var myReg = /<(/w+)>/;    return strInput.replace(myReg, "<$1>");  } E-mail地址验证:  function test_email(strEmail) {   var myReg = /^[_a-z0-9]+@([_a-z0-9]+/.)+[a-z0-9]{2,3}$/;   if(myReg.test(strEmail)) return true;   return false;  }  

 

var myReg = /^[_a-z0-9]+@([_a-z0-9]+/.)+[a-z0-9]{2,3}$/;       if(form1.email.value == "" || form1.problem.value == "" || form1.answer.value == "" || form1.username.value == "" ){    str+="星号为必填项!/n";   }      if(form1.email.value!=""){    if(!myReg.test(form1.email.value)) {     str+="EMAIL输入有误，请重新输入！/n";    }   }      if(form1.password.value != form1.password2.value){    str+="两次密码输入不一致/n";   }      if(form1.code.value!=""){   if(!form1.code.value.match(/^[0-9]{6}$/)){    str+="邮编输入错误，请重新输入！/n";   }   }