编写简洁的页面表单验证程序功能简述：使用方法

2022-07-15 80酷酷网 80kuku.com

　　表单验证|程序|页面

，原始文件应用一个日历输入控件在此省略。。。

总代码：

运行代码框
<!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><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>vForm表单验证程序</title><style type="text/css"></style><script language="JavaScript" type="text/javascript">//程序基本思路：通过扩展对象来实现，将String扩展将默认的表单元素扩展定义两个自定义对象。//String.isEmail//String.isUrl//表单元素.required//表单元素.isvalid//表单元素.validate////字符串验证扩展//├电子邮件验证String.prototype.isEmail = function(){var tmpStr = this;var email = /^\w+([-+.]\w+)*\w+([-.]\w+)*\.\w+([-.]\w+)*$/;return email.test(tmpStr)}//├http地址验证String.prototype.isUrl = function(){var url = /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`[\]\':+!]*([^<>\"\"])*$/;var tmpStr = this;return url.test(tmpStr);}//├日期验证（第一部分）String.prototype.isDateTime = function(){if(Date.parse(this)　　Date.parseDate(this)){return true;}else{return false;}}String.prototype.isInteger = function(){var _i = /^[-\+]?\d+$/;var _s = this; return _i.test(_s);}Date.prototype.toIsoDate = function(){var _d = this;var _s;_Y =_d.getFullYear();_M = _d.getMonth() + 1;_D = _d.getDate();_H = _d.getHours();_I = _d.getMinutes();_S = _d.getSeconds();with(_d){_s = [getMonth() + 1,getDate(),getHours(),getMinutes(),getSeconds()];}for(var i = 0; i < _s.length; i++){if (_s[i].toString().length == 1)_s[i]= '0'+_s[i];}return (_Y + '-'+_s[0]+'-'+_s[1]+' '+_s[2]+':'+_s[3]+':'+_s[4])}//├日期验证（第二部分）Date.parseDate = function(str, fmt) {fmt = fmt　　"%Y-%m-%d %H:%M";var today = new Date();var y = 0;var m = -1;var d = 0;var a = str.split(/\W+/);var b = fmt.match(/%./g);var i = 0, j = 0;var hr = 0;var min = 0;for (i = 0; i < a.length; ++i) {if (!a[i])continue;switch (b[i]) { case "%d": case "%e":d = parseInt(a[i], 10);break; case "%m":m = parseInt(a[i], 10) - 1;break; case "%Y": case "%y":y = parseInt(a[i], 10);(y < 100) && (y += (y > 29) ? 1900 : 2000);break; case "%b": case "%B":for (j = 0; j < 12; ++j) {if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { m = j; break; }}break; case "%H": case "%I": case "%k": case "%l":hr = parseInt(a[i], 10);break; case "%P": case "%p":if (/pm/i.test(a[i]) && hr < 12)hr += 12;else if (/am/i.test(a[i]) && hr >= 12)hr -= 12;break; case "%M":min = parseInt(a[i], 10);break;}}if (isNaN(y)) y = today.getFullYear();if (isNaN(m)) m = today.getMonth();if (isNaN(d)) d = today.getDate();if (isNaN(hr)) hr = today.getHours();if (isNaN(min)) min = today.getMinutes();if (y != 0 && m != -1 && d != 0)return new Date(y, m, d, hr, min, 0);y = 0; m = -1; d = 0;for (i = 0; i < a.length; ++i) {if (a[i].search(/[a-zA-Z]+/) != -1) {var t = -1;for (j = 0; j < 12; ++j) {if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { t = j; break; }}if (t != -1) {if (m != -1) {d = m+1;}m = t;}} else if (parseInt(a[i], 10) <= 12 && m == -1) {m = a[i]-1;} else if (parseInt(a[i], 10) > 31 && y == 0) {y = parseInt(a[i], 10);(y < 100) && (y += (y > 29) ? 1900 : 2000);} else if (d == 0) {d = a[i];}}if (y == 0)y = today.getFullYear();if (m != -1 && d != 0)return new Date(y, m, d, hr, min, 0);return today;};//扩展完成//对象定义var vform = new Object;//获取弹出提示的显示位置vform.getAbsolutePos = function(el) {var _p = { x: 0, y: 0 }; do{_p.x += (el.offsetLeft - el.scrollLeft);_p.y += (el.offsetTop - el.scrollTop); } while(el=el.offsetParent) return _p; };vform.toString = function(){return("vForm表单验证程序\n版本：1.0beta\n作者：雷晓宝\n时间：2006-07-31\n网址：http://lxbzj.com\n许可：LGPL");}vform.rules = new Array;vform.rules.add = function(obj,minLength,dataType,errmsg,maxLength,rule,patams){ var curlen = this.length; this[curlen] = [obj,minLength,dataType,errmsg,maxLength,rule,patams]; //this[curlen] = [ 0 , 1 , 2 , 3 , 4 , 5 , 6 ]; return this.length;}vform.init= function(){if(document.getElementById(this.form_id)){//获取表单var o = document.getElementById(this.form_id);//遍历规则for(var i = 0 ;i< this.rules.length;i++){_r = this.rules[i]//如果存在元素，则添加验证程序if(_o = o.elements[_r[0]]){//判断是是否必填,是否有最小长度if(_r[1] > 0 ){_o.required = true;//必填的含义和最小长度为1是一样的_o.minLength = parseInt(_r[1]);}else{_o.required = false;_o.minLength = 0;}//判断是否有最大长度;if(_r[4]){_o.maxLength = parseInt(_r[4]);}//添加长度验证函数_o.validLength = function (){var b =true;if(this.minLength){b = (this.minLength <= this.value.length);}if(this.type == 'textarea' && this.maxLength ){b = b && (this.maxLength >= this.value.length );}return (b);}//添加验证，进行格式验证switch(_r[2]){case 'e-mail':_o.validate = function(){this.isvalid = this.validLength() && this.value.isEmail();return (this.isvalid);};break;case 'url':_o.validate = function(){if (this.value.substring(0,7) != 'http://')this.value = 'http://' +this.value;this.isvalid = this.validLength() && this.value.isUrl();return (this.isvalid);}break;case 'date':_o.validate = function(){var _d = Date.parse(this.value)　　Date.parseDate(this.value);this.value = _d.toIsoDate();this.isvalid = this.validLength() && this.value.isDateTime();return (this.isvalid);a=a>b?1:1;}break;case 'number':_o.validate = function(){this.isvalid = this.validLength() && this.value.isInteger();return (this.isvalid);}break;case 'any':_o.validate = function(){this.isvalid = this.validLength();return this.isvalid}break;default :var regexp = /^\\\w+$/;if ( regexp.test(_r[2]))//表示必须和同表单下的某个字段的值一样。用于重复输入的验证{_el = _r[2].substring(1);if (o.elements[_el]){_o.equal = _el;_o.validate = function(){if(_o = this.form.elements[this.equal]){if ( (_o.value == this.value) && this.validLength()){return true;}else {return false;}}else{alert('setup error');}}}else{alert(_el + 'is not a valid form element');_o.validate = function(){return true;}}}var regexp1 = /^\\(==　!=　>=　<=　>　<)/;if ( regexp1.test(_r[2]) ){_s0 = _r[2];_s1 = RegExp.$1;_s2 = _s0.replace(regexp1,'');_operator = _s1.substring(0);//比较操作符var regexp2 = /^\w+$/;if (regexp2.test(_s2))//是一个标志符，整数或者变量{_o.operation = _operator+_s2;_o.validate = function(){_b = true;if (this.value.length !=0){_b = eval(this.value+this.operation+';');}_b = _b && this.validLength();return _b;}}};break;}//添加验证提示(div标签)并初始化var _p = vform.getAbsolutePos(_o);_o.tip = new tip(_r[3],vform.err_class,_p.x+_o.offsetWidth+3,_p.y);_o.tip.init();//失去焦点时，开始验证_o.onblur =function(e){if(this.minLength 　　 this.value.length >0) { if( this.validate() ){this.tip.hide();}else{this.tip.show();//显示错误信息//this.focus(); 添加这句在ie里会导致死循环 :(return false;}}}}}//焦点验证可能会失败,所以最后需要表单提交前的验证作为最后的补充。document.getElementById(this.form_id).onsubmit = function(){var valid = true;for(i=0;i<this.elements.length;i++){_o = this.elements[i];if(_o.minLength && !_o.isvalid){_o.tip.show();valid = false;}}return valid;}}}//弹出提示定义function tip(text,className,x,y){var o = document.createElement("div");o.style.display = "none";o.innerHTML = text;//var t = document.createTextNode(text);document.body.appendChild(o);//o.appendChild(t);this.init = function(dis){o.className = "info";o.style.left = x+"px";o.style.top = y+"px";o.style.zindex = 100;if(dis){o.style.display = "";}else{o.style.display = "none";}}this.show = function(){o.style.display = "";}this.hide = function(){o.style.display = "none";}}function start(){vform.form_id = 'form1';//必须是表单的idvform.err_class = 'info';//出错提示的样式//验证规则，逐条填写vform.rules.add('frm_name',1,'e-mail','请您按照 userdomain.com 的格式输入电子邮件地址。<br /><span http://www.domain.com 的格式输入您的网址。<br /><span 的格式输入日期。<br /><span /><span /><span /><span /><span /><span ><form id="form1" name="form1" method="get" action=""><label for="frm_name">e-mail:<input name="frm_name" type="text" class="text_input" id="frm_name" title="输入一个电子邮箱地址"/></label>*<p><label for="r_pass0">输入密码：<input name="r_pass0" type="text" class="text_input" id="r_pass0" title="输入您希望的密码 " /></label>*</p><p><label for="r_pass1">密码确认：<input name="r_pass1" type="text" class="text_input" id="r_pass1" title="将密码确认一次" /></label>*</p><p><label for="frm_sel">选择：<select name="frm_sel" id="frm_sel" title="请选择一个答案"><option value="0">请选择一个答案</option><option value="1" selected="selected">1000</option><option value="2">2000</option><option value="3">3000</option><option value="4">4000</option><option value="5">5000</option><option value="6">6000</option></select></label>*</p><p><label for="input3">输入网址：<input name="myweb" type="text" class="text_input" id="input3" title="输入一个网址" onmousemove="" value="http://" maxlength="100"/></label>*</p><p><label for="dateinput">输入日期<input name="dateinput" type="text" class="text_input" title="输入一个日期" id="dateinput"/></label>*</p><p><label for="mub">输入数字<input name="qq" type="text" class="text_input" title="填写数字" id="mub"/></label></p><p><label for="len">输入任意但长度限制为10个<input name="least10" type="text" class="text_input" maxlength="88" id="len"/>*</label></p><p><label for="text">只能输入100个<textarea name="ok100" cols="40" rows="5" id="text" title="详细内容"> *

vForm1.0beta

作者：雷晓宝
时间：2006-08-08
网址：http://lxbzj.com
e-mail:lxbzmy163.com
许可：LGPL

功能简述：

验证：
- http地址。
- 时间日期
- e-mail
- 数字
- 字符长度检查
- 一项输入与另一项输入比较（例如：密码的确认输入）
- 大小比较（只能有一个比较符号）
特点
- 扩展容易，可以方便的添加自己需要的验证方式
- 兼容性好（ie5,6 firefox,oprea）。
- 可用性好，没有使用alert()来弹出提示;

使用方法

使用时，需要定义一个出错提示框的样式，本例的样式为：div.info { width: 170px; overflow:visible; height:auto; font-size: small; position: absolute; background-color: #FFffdd; border: 1px solid #000; filter:progid:DXImageTransform.Microsoft.Shadow(color=#111111,direction=135,strength=3); padding: 5px; }

然后在网页<head>部分中添加<script type="text/javascript" src="calendar/calendar.js"></script>
，然后可以写一个函数设置表单名称，验证规则，function start() { vFormvform.form_id = 'form1'; vform.err_class = 'info'; // (obj,required(true/false),dataType,errmsg,minlen,maxlen,rule,patams) //验证规则，逐条填写 vform.rules.add('frm_name',1,'e-mail','请您按照 userdomain.com 的格式输入电子邮件地址。<br /><span http://www.domain.com 的格式输入您的网址。<br /><span 的格式输入日期。<br /><span /><span /><span <body >

编写简洁的页面表单验证程序功能简述：使用方法

vForm1.0beta

功能简述：

验证：

特点

使用方法