网上找的一个表单验证类及使用例子(稍微修改了下)
test.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>无标题页</title>
<script type="text/javascript" src="validate.js"></script>
</head>
<body>
<form id="form1">
<table width="600" border="0" cellspacing="0" cellpadding="2" style="font:12px Tahoma">
<tr>
<td>密码</td>
<td>password</td>
<td><input type="text" name="password" controlName="密码" dataType="password" /></td>
</tr>
<tr>
<td>密码确认</td>
<td>confirm</td>
<td><input type="text" name="confirm" controlName="密码确认" confirm="password" /></td>
</tr>
<tr>
<td width="57">英文</td>
<td width="60">english</td>
<td width="471"><input type="text" name="english" controlName="英文" dataType="english" dataLength="4,10" />
4~10个字符</td>
</tr>
<tr>
<td>中文</td>
<td>chinese</td>
<td><input type="text" name="chinese" required="required" controlName="中文" dataType="chinese"/>非空</td>
</tr>
<tr>
<td>数字</td>
<td>number</td>
<td><input type="text" name="number" controlName="数字" dataBetween="10,100" />大于10，小于100</td>
</tr>
<tr>
<td>整数</td>
<td>integer</td>
<td><input type="text" name="integer" controlName="整数" dataType="integer" /></td>
</tr>
<tr>
<td>浮点数</td>
<td>float</td>
<td><input type="text" name="float" controlName="浮点数" dataType="float" /></td>
</tr>
<tr>
<td>日期</td>
<td>date</td>
<td><input type="text" name="date" controlName="日期" dataType="date" /></td>
</tr>
<tr>
<td>邮件</td>
<td>email</td>
<td><input type="text" name="email" controlName="邮件" dataType="email" /></td>
</tr>
<tr>
<td>网址</td>
<td>url</td>
<td><input type="text" name="url" controlName="网址" dataType="url" /></td>
</tr>
<tr>
<td>电话</td>
<td>phone</td>
<td><input type="text" name="phone" controlName="电话" dataType="phone" /></td>
</tr>
<tr>
<td>手机</td>
<td>mobile</td>
<td><input type="text" name="mobile" controlName="手机" dataType="mobile" /></td>
</tr>
<tr>
<td>IP地址</td>
<td>ip</td>
<td><input type="text" name="ip" controlName="IP地址" dataType="ip" /></td>
</tr>
<tr>
<td>邮编</td>
<td>zipcode</td>
<td><input type="text" name="zipcode" controlName="邮编" dataType="zipcode" /></td>
</tr>
<tr>
<td>QQ号码</td>
<td>qq</td>
<td><input type="text" name="qq" controlName="QQ号码" dataType="ip" /></td>
</tr>
<tr>
<td>MSN</td>
<td>msn</td>
<td><input type="text" name="msn" controlName="MSN" dataType="msn" /></td>
</tr>
<tr>
<td>身份证</td>
<td>idcard</td>
<td><input type="text" name="idcard" controlName="身份证" dataType="idcard" /></td>
</tr>
<tr>
<td colspan="3" align="left">
<input type="button" value=" 测试 " onclick="return validator();" />
<input type="button" value=" 下一步 " onclick="next();" />
</td>
</tr>
</table>
</form>
<script type="text/javascript">
function next()
{
var flag = validator();
if(flag != false)
alert("ok");
}
</script>
</body>
</html>
validate.js
//去除字符串两边的空格
String.prototype.trim = function () {
return this.replace(/(^\s+)|(\s+$)/g, "");
}
//检测字符串是否为空
String.prototype.isEmpty = function () {
return !(/.?[^\s ]+/.test(this));
}
//检测值是否介于某两个指定的值之间
String.prototype.isBetween = function (val, min, max) {
return isNaN(val) == false && val >= min && val <= max;
}
//获取最大值或最小值
String.prototype.getBetweenVal = function (what) {
var val = this.split(',');
var min = val[0];
var max = val[1] == null ? val[0] : val[1];
if (parseInt(min) > parseInt(max)) {
min = max;
max = val[0];
}
return what == 'min' ? (isNaN(min) ? null : min) : (isNaN(max) ? null : max);
}
var validator = function () {
this.allTags = document.getElementsByTagName('*');
//字符串验证正则表达式
this.reg = new Object();
this.reg.english = /^[a-zA-Z0-9_\-]+$/;
this.reg.chinese = /^[\u0391-\uFFE5]+$/;
this.reg.number = /^[-\+]?\d+(\.\d+)?$/;
this.reg.integer = /^[-\+]?\d+$/;
this.reg.float = /^[-\+]?\d+(\.\d+)?$/;
this.reg.date = /^(\d{4})(-|\/)(\d{1,2})\2(\d{1,2})$/;
this.reg.email = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
this.reg.url = /^(((ht|f)tp(s?))\:\/\/)[a-zA-Z0-9]+\.[a-zA-Z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/;
this.reg.phone = /^((\(\d{2,3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$/;
this.reg.mobile = /^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$$/;
this.reg.ip = /^(0|[1-9]\d?|[0-1]\d{2}|2[0-4]\d|25[0-5]).(0|[1-9]\d?|[0-1]\d{2}|2[0-4]\d|25[0-5]).(0|[1-9]\d?|[0-1]\d{2}|2[0-4]\d|25[0-5]).(0|[1-9]\d?|[0-1]\d{2}|2[0-4]\d|25[0-5])$/;
this.reg.zipcode = /^[1-9]\d{5}$/;
this.reg.qq = /^[1-9]\d{4,10}$/;
this.reg.msn = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
this.reg.idcard = /(^\d{15}$)|(^\d{17}[0-9Xx]$)/;
//错误输出信息
this.tip = new Object();
this.tip.unknow = '未找到的验证类型，无法执行验证。';
this.tip.paramError = '参数设置错误，无法执行验证。';
this.tip.required = '不允许为空。';
this.tip.english = '仅允许英文字符及下划线 (a-zA-Z0-9_)。';
this.tip.chinese = '仅允许中文字符。';
this.tip.number = '不是一个有效的数字。';
this.tip.integer = '不是一个有效的整数。';
this.tip.float = '不是一个有效的浮点数。';
this.tip.date = '不是一个有效的日期格式。 (例如：2007-06-29)';
this.tip.email = '不是一个有效的电子邮件格式。';
this.tip.url = '不是一个有效的超链接格式。';
this.tip.phone = '不是一个有效的电话号码。';
this.tip.mobile = '不是一个有效的手机号码。';
this.tip.ip = '不是一个有效的IP地址。';
this.tip.zipcode = '不是一个有效的邮政编码。';
this.tip.qq = '不是一个有效的QQ号码。';
this.tip.msn = '不是一个有效的MSN帐户。';
this.tip.idcard = '不是一个有效的身份证号码。';
//获取控件名称
this.getControlName = function ()
{
return this.element.getAttribute('controlName') == null
? '指定控件的值'
: this.element.getAttribute('controlName');
}
//设定焦点
this.setFocus = function (ele) {
try {
ele.focus();
} catch (e){}
}
//输出错误反馈信息
this.feedback = function (type) {
try {
var msg = eval('this.tip.' + type) == undefined ?
type :
this.getControlName() + eval('this.tip.' + type);
} catch (e) {
msg = type;
}
alert(msg);
this.setFocus(this.element);
};
//执行字符串验证
this.validate = function () {
var v = this.element.value;
//验证是否允许非空
var required = this.element.getAttribute('required');
if (required != null && v.isEmpty()) {
this.feedback('required');
return false;
}
//验证是否合法格式
var dataType = this.element.getAttribute('dataType');
if (!v.isEmpty() && dataType != null && dataType.toLowerCase() != 'password') {
dataType = dataType.toLowerCase();
try {
if (!(eval('this.reg.' + dataType)).test(v)) {
this.feedback(dataType);
return false;
}
} catch(e) {
this.feedback('unknow');
return false;
}
}
//执行数据验证
var confirm = this.element.getAttribute('confirm');
if (confirm != null) {
try {
var data = document.getElementsByName(confirm)[0].value;
if (v != data) {
alert('两次输入的内容不一致，请重新输入。');
this.setFocus(this.element);
return false;
}
} catch (e) {
this.feedback('paramError');
return false;
}
}
//验证数字大小
var dataBetween = this.element.getAttribute('dataBetween');
if (!v.isEmpty() && dataBetween != null) {
var min = dataBetween.getBetweenVal('min');
var max = dataBetween.getBetweenVal('max');
if (min == null || max == null) {
this.feedback('paramError');
return false;
}
if (!v.isBetween(v.trim(), min, max)) {
this.feedback(this.getControlName() + '必须是介于 ' + min + '-' + max + ' 之间的数字。');
return false;
}
}
//验证字符长度
var dataLength = this.element.getAttribute('dataLength');
if (!v.isEmpty() && dataLength != null) {
var min = dataLength.getBetweenVal('min');
var max = dataLength.getBetweenVal('max');
if (min == null || max == null) {
this.feedback('paramError');
return false;
}
if (!v.isBetween(v.trim().length, min, max)) {
this.feedback(this.getControlName() + '必须是 ' + min + '-' + max + ' 个字符。');
return false;
}
}
return true;
};
//执行初始化操作
this.init = function () {
for (var i=0; i<this.allTags.length; i++) {
if (this.allTags[i].tagName.toUpperCase() == 'INPUT' ||
this.allTags[i].tagName.toUpperCase() == 'SELECT' ||
this.allTags[i].tagName.toUpperCase() == 'TEXTAREA')
{
this.element = allTags[i];
if (!this.validate())
return false;
}
}
};
return this.init();
}