6、结合类 6.1 email的判断。 function ismail(mail) { return(new RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(mail)); } 6.2 手机号码的验证 6.3 身份证的验证 function isIdCardNo(num) { if (isNaN(num)) {alert("输入的不是数字!"); return false;} var len = num.length, re; if (len == 15) re = new RegExp(/^(\d{6})()?(\d{2})(\d{2})(\d{2})(\d{3})$/); else if (len == 18) re = new RegExp(/^(\d{6})()?(\d{4})(\d{2})(\d{2})(\d{3})(\d)$/); else {alert("输入的数字位数不对!"); return false;} var a = num.match(re); if (a != null) { if (len==15) { var D = new Date("19"+a[3]+"/"+a[4]+"/"+a[5]); var B = D.getYear()==a[3]&;&;(D.getMonth()+1)==a[4]&;&;D.getDate()==a[5]; } else { var D = new Date(a[3]+"/"+a[4]+"/"+a[5]); var B = D.getFullYear()==a[3]&;&;(D.getMonth()+1)==a[4]&;&;D.getDate()==a[5]; } if (!B) {alert("输入的身份证号 "+ a[0] +" 里出生日期不对!"); return false;} } return true; } 画图: