如何使用正则表达式和javascript对表单进行全面验证

使用时请将下面的javascript代码存到一个单一的js文件中。
1、表单要求

<form name="formname" onSubmit="return validateForm(this)"></form>

将对表单中的所有以下类型的域依次验证，所有验证是去除了前导和后缀空格的，要注意是区分大小写的。
2、空值验证
表单中任意域加上emptyInfo属性将对此域是否为空进行验证（可以和最大长度验证\一般验证方式同时使用）。
无此属性视为此域允许空值。
如：
3、最大长度验证（可以和空值验证、一般验证方式同时使用）：

或,<br/>3、一般验证方式(不对空值做验证）:<br/>如：<input type="text" validator="^(19|20)[0-9]{2}$" errorInfo="不正确的年份!" ><br/>4、标准验证(不与其它验证方式同时使用）：<br/>全部通过<input type="hidden">来实现，并且不需要name属性以免提交到服务器。<br/>4.1、合法日期验证：<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><input type="text" name="yearfieldName" value="2004">注：这里也可以是<select name="yearfieldName"></select>，以下同 <input type="text" name="monthfieldName" value="02"> <input type="text" name="dayfieldName" value="03"> <input type="hidden" validatorType="DateGroup" year="yearfieldName" month="monthfieldName" day="dayfieldName" errorInfo="不正确的日期!"></pre><div class="contentsignin">登录后复制</div></div><p>yearfieldName、monthfieldName、dayfieldName分别为年月日字段，月和日可以是两位(MM)或一位格式(M)，<br/>此处不对每个字段分别检验(如果要检验，请在年月日三个域分别使用前面的一般验证方式），只对日期的最大值是否合法检查;<br/>4.2、日期格式验证(请注意，此验证不对日期是否有效进行验证，还未找到从格式中得到年月日数据的方法^_^)：<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><input type="text" name="datefieldName" value="2003-01-03 21:31:00"> <input type="hidden" validatorType="Date" fieldName="datefieldName"; format="yyyy-MM-dd HH:mm:ss" errorInfo="不正确的日期!"></pre><div class="contentsignin">登录后复制</div></div><p>其中格式仅对y、M、d、H、m、s进行支持(其它字符视为非时间的字符)<br/>4.3、列表验证：<br/>检验列表(checkbox、redio、select)是否至少选中了一条记录(对select主要用于多项选择)<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><input type="checkbox" name="checkbox1"> <input type="hidden" validatorType="Checkbox" fieldName="checkbox1" errorInfo="请至少选中一条记录!"></pre><div class="contentsignin">登录后复制</div></div><p>其中validatorType可以是Checkbox、R、Select;<br/>对于一个select表单，如果要求选择一条不能是第一条的记录，请用下列方式:<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><select name="select1" emptyInfo="请选择一个选项!"> <option value="">==请选择==</option> <option value="1">1</option> <select></pre><div class="contentsignin">登录后复制</div></div><p>4.4、Email验证：<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><input type="text" name="email"> <input type="hidden" fieldName="email" validatorType="Email" separator="," errorInfo="不正确的Email!"></pre><div class="contentsignin">登录后复制</div></div><p>其中separator为可选项，表示输入多个email时的分隔符(无此选项只能是一个地址）<br/>4.5、加入其它javascript操作：<br/></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><script type="text/javascript"> function functionname(){ 自定义方法 } </script> 表单中加入<input type="hidden" validatorType="javascript" functionName="functionname">（此时emptyInfo等属性无效） 时将调用function属性中指定的javascript方法（要求方法返回true或false，返回false将不再验证表单，也不提交表单)。 5、在表单通过验证提交前disable一个按钮（也可将其它域disable,不能与其它验证同在一个域)，不要求按钮是表单中的最后一个 <input type="button" name="提交" validatorType="disable"> 6、不验证表单 <input type="hidden" name="validate" value="0" functionName="functionname"> 当validator域值为0时不对表单进行验证，直接提交表单或执行指定function并返回true后提交表单 functionName为可选 --> <script type="text/javascript"> function getStringLength(str){ var endvalue=0; var sourcestr=new String(str); var tempstr; for (var strposition = 0; strposition < sourcestr.length; strposition ++) { tempstr=sourcestr.charAt(strposition); if (tempstr.charCodeAt(0)>255 || tempstr.charCodeAt(0)<0) { endvalue=endvalue+2; } else { endvalue=endvalue+1; } } return(endvalue); } function trim(str){ if(str==null) return ""; if(str.length==0) return ""; var i=0,j=str.length-1,c; for(;i<str.length;i++){ c=str.charAt(i); if(c!=&#39; &#39;) break; } for(;j>-1;j--){ c=str.charAt(j); if(c!=&#39; &#39;) break; } if(i>j) return ""; return str.substring(i,j+1); } function validateDate(date,format,alt){ var time=trim(date.value); if(time=="") return; var reg=format; var reg=reg.replace(/yyyy/,"[0-9]{4}"); var reg=reg.replace(/yy/,"[0-9]{2}"); var reg=reg.replace(/MM/,"((0[1-9])|1[0-2])"); var reg=reg.replace(/M/,"(([1-9])|1[0-2])"); var reg=reg.replace(/dd/,"((0[1-9])|([1-2][0-9])|30|31)"); var reg=reg.replace(/d/,"([1-9]|[1-2][0-9]|30|31))"); var reg=reg.replace(/HH/,"(([0-1][0-9])|20|21|22|23)"); var reg=reg.replace(/H/,"([0-9]|1[0-9]|20|21|22|23)"); var reg=reg.replace(/mm/,"([0-5][0-9])"); var reg=reg.replace(/m/,"([0-9]|([1-5][0-9]))"); var reg=reg.replace(/ss/,"([0-5][0-9])"); var reg=reg.replace(/s/,"([0-9]|([1-5][0-9]))"); reg=new RegExp("^"+reg+"$"); if(reg.test(time)==false){//验证格式是否合法 alert(alt); date.focus(); return false; } return true; } function validateDateGroup(year,month,day,alt){ var array=new Array(31,28,31,30,31,30,31,31,30,31,30,31); var y=parseInt(year.value); var m=parseInt(month.value); var d=parseInt(day.value); var maxday=array[m-1]; if(m==2){ if((y%4==0&&y%100!=0)||y%400==0){ maxday=29; } } if(d>maxday){ alert(alt); return false; } return true; } function validateCheckbox(obj,alt){ var rs=false; if(obj!=null){ if(obj.length==null){ return obj.checked; } for(i=0;i<obj.length;i++){ if(obj[i].checked==true){ return true; } } } alert(alt); return rs; } function validateRadio(obj,alt){ var rs=false; if(obj!=null){ if(obj.length==null){ return obj.checked; } for(i=0;i<obj.length;i++){ if(obj[i].checked==true){ return true; } } } alert(alt); return rs; } function validateSelect(obj,alt){ var rs=false; if(obj!=null){ for(i=0;i<obj.options.length;i++){ if(obj.options[i].selected==true){ return true; } } } alert(alt); return rs; } function validateEmail(email,alt,separator){ var mail=trim(email.value); if(mail=="") return; var em; var myReg = /^[_a-z0-9]+@([_a-z0-9]+\.)+[a-z0-9]{2,3}$/; if(separator==null){ if(myReg.test(email.value)==false){ alert(alt); email.focus(); return false; } } else{ em=email.value.split(separator); for(i=0;i<em.length;i++){ em[i]=em[i].trim(); if(em[i].length>0&&myReg.test(em[i])==false){ alert(alt); email.focus(); return false; } } } return true; } function validateForm(theForm){// 若验证通过则返回true var disableList=new Array(); var field = theForm.elements; // 将表单中的所有元素放入数组 for(var i = 0; i < field.length; i++){ var vali=theForm.validate; if(vali!=null){ if(vali.value=="0"){ var fun=vali.functionName; if(fun!=null){ return eval(fun+"()"); } else{ return true; } } } var empty=false; var value=trim(field[i].value); if(value.length==0){//是否空值 empty=true; } var emptyInfo=field[i].emptyInfo;//空值验证 if(emptyInfo!=null&&empty==true){ alert(emptyInfo); field[i].focus(); return false; } var lengthInfo=field[i].lengthInfo;//最大长度验证 if(lengthInfo!=null&&getStringLength(value)>field[i].maxLength){ alert(lengthInfo); field[i].focus(); return false; } var validatorType=field[i].validatorType; if(validatorType!=null){//其它javascript var rs=true; if(validatorType=="javascript"){ eval("rs="+field[i].functionName+"()"); if(rs==false){ return false; } else{ continue; } } else if(validatorType=="disable"){//提交表单前disable的按钮 disableList.length++; disableList[disableList.length-1]=field[i]; continue; } else if(validatorType=="Date"){ rs=validateDate(theForm.elements(field[i].fieldName),field[i].format,field[i].errorInfo); } else if(validatorType=="DateGroup"){ rs=validateDateGroup(theForm.elements(field[i].year),theForm.elements(field[i].month),theForm.elements(field[i].day),field[i].errorInfo); } else if(validatorType=="Checkbox"){ rs=validateCheckbox(theForm.elements(field[i].fieldName),field[i].errorInfo); } else if(validatorType=="Radio"){ rs=validateRadio(theForm.elements(field[i].fieldName),field[i].errorInfo); } else if(validatorType=="Select"){ rs=validateSelect(theForm.elements(field[i].fieldName),field[i].errorInfo); } else if(validatorType=="Email"){ rs=validateEmail(theForm.elements(field[i].fieldName),field[i].errorInfo); } else{ alert("验证类型不被支持, fieldName: "+field[i].name); return false; } if(rs==false){ return false; } } else{//一般验证 if(empty==false){ var v = field[i].validator; // 获取其validator属性 if(!v) continue; // 如果该属性不存在,忽略当前元素 var reg=new RegExp(v); if(reg.test(field[i].value)==false){ alert(field[i].errorInfo); field[i].focus(); return false; } } } } for(i=0;i<disableList.length;i++){ disableList[i].disabled=true; } return true; } </script></pre><div class="contentsignin">登录后复制</div></div><p><br></p> </div> </div> <div class="wzconShengming_sp"> <div class="bzsmdiv_sp">本站声明</div> <div>本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn</div> </div> </div> <ins class="adsbygoogle" style="display:block" data-ad-format="autorelaxed" data-ad-client="ca-pub-5902227090019525" data-ad-slot="2507867629"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <div class="AI_ToolDetails_main4sR"> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-5902227090019525" data-ad-slot="3653428331" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); 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