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Javascript 中的实用的JS表单验证提示效果

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2010-01-10 浏览: 26 ::

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JavaScript 表格高亮类的应用[高级] CSS 直方图布局示例

一个流行且实用的JS表单验证提示，演示了怎么自定义错误信息的显示方式，同时通过写FormValid.showError类方法来实现错误显示方式自定义. errMsg 是一个错误消息的数组，这样方便自定义,errName是对应错误信息元件名数组，这样可以非富自定义显示方式，FormValid.allName记录了所有有验证规则的字段名数级，在自定义中可以使用到。

<!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>表单验证提示效果</title>
<style type="text/css">
body{ color:#666666; font-size:12px}
h1{ font-size:20px;}
input{ border:#999999 1px solid; background-color:#FFFFEE}
.button2{ background-color:#FF9900; border-bottom:#E34A00 2px solid;border-right:#E34A00 2px solid; border-top:#FFB693 2px solid;border-left:#FFB693 2px solid; color:#FFFFFF; font-weight:bold}
dl {
font:normal 12px/15px Arial;
position: relative;
width: 350px;
}
dt {
clear: both;
float:left;
width: 80px;
padding: 4px 0 2px 0;
text-align: left;
}
dd {
float: left;
width: 200px;
margin: 0 0 8px 0;
padding-left: 6px;
}
.hint {
display: none;
position: absolute;
right: -160px;
width: 200px;
margin-top: -4px;
border: 1px solid #c93;
padding: 10px 12px;
background: #ffc url(/upload/tech/20100110/20100110114021_310dcbbf4cce62f762a2aaa148d556bd.gif) no-repeat -10px 5px;
}
.hint .hint-pointer {
position: absolute;
left: -10px;
top: 5px;
width: 10px;
height: 19px;
background: url(/upload/tech/20100110/20100110114021_310dcbbf4cce62f762a2aaa148d556bd.gif) left top no-repeat;
}
</style>
<script language="JavaScript" type="text/javascript">
var FormValid = function(frm) {
this.frm = frm;
this.errMsg = new Array(); this.errName = new Array();
this.required = function(inputObj) {
if (typeof(inputObj) == "undefined" || inputObj.value.trim() == "") {
return false;
} return true;
}
this.eqaul = function(inputObj, formElements) { var fstObj = inputObj; var sndObj = formElements[inputObj.getAttribute('eqaulName')];
if (fstObj != null && sndObj != null) {
if (fstObj.value != sndObj.value) {
return false;
}
} return true;
}
this.gt = function(inputObj, formElements) { var fstObj = inputObj; var sndObj = formElements[inputObj.getAttribute('eqaulName')];
if (fstObj != null && sndObj != null && fstObj.value.trim()!='' && sndObj.value.trim()!='') {
if (fstObj.value <= sndObj.value) {
return false;
}
} return true;
} this.compare = function(inputObj, formElements) { var fstObj = inputObj; var sndObj = formElements[inputObj.getAttribute('objectName')];
if (fstObj != null && sndObj != null && fstObj.value.trim()!='' && sndObj.value.trim()!='') {
if (!eval('fstObj.value' + inputObj.getAttribute('operate') + 'sndObj.value')) {
return false;
}
} return true; } this.limit = function (inputObj) { var len = inputObj.value.length; if (len) { var minv = inputObj.getAttribute('min'); var maxv = inputObj.getAttribute('max'); minv = minv || 0; maxv = maxv || Number.MAX_VALUE; return minv <= len && len <= maxv; } return true; } this.range = function (inputObj) { var val = parseInt(inputObj.value); if (inputObj.value) { var minv = inputObj.getAttribute('min'); var maxv = inputObj.getAttribute('max'); minv = minv || 0; maxv = maxv || Number.MAX_VALUE; return minv <= val && val <= maxv; } return true; } this.requireChecked = function (inputObj) { var minv = inputObj.getAttribute('min'); var maxv = inputObj.getAttribute('max'); minv = minv || 1; maxv = maxv || Number.MAX_VALUE; var checked = 0; var groups = document.getElementsByName(inputObj.name); for(var i=0;i<groups.length;i++) { if(groups[i].checked) checked++; } return minv <= checked && checked <= maxv; } this.filter = function (inputObj) { var value = inputObj.value; var allow = inputObj.getAttribute('allow'); if (value.trim()) { return new RegExp("^.+\.(?=EXT)(EXT)$".replace(/EXT/g, allow.split(/\s*,\s*/).join("|")), "gi").test(value); } return true; } this.isNo = function (inputObj) { var value = inputObj.value; var noValue = inputObj.getAttribute('noValue'); return value!=noValue; }
this.checkReg = function(inputObj, reg, msg) {
inputObj.value = inputObj.value.trim();
if (inputObj.value == '') {
return;
} else {
if (!reg.test(inputObj.value)) { this.addErrorMsg(inputObj.name,msg); }
}
}
this.passed = function() {
if (this.errMsg.length > 0) {
FormValid.showError(this.errMsg,this.errName);
frt = document.getElementsByName(this.errName[0])[0]; if (frt.type!='radio' && frt.type!='checkbox') { frt.focus(); }
return false;
} else {
return true;
}
}
this.addErrorMsg = function(name,str) {
this.errMsg.push(str); this.errName.push(name);
}
this.addAllName = function(name) { FormValid.allName.push(name);
}
}
FormValid.allName = new Array();
FormValid.showError = function(errMsg) { var msg = ""; for (i = 0; i < errMsg.length; i++) { msg += "- " + errMsg[i] + "\n"; } alert(msg);
}
function validator(frm) { var formElements = frm.elements; var fv = new FormValid(frm); for (var i=0; i<formElements.length;i++) { var validType = formElements[i].getAttribute('valid'); var errorMsg = formElements[i].getAttribute('errmsg'); if (validType==null) continue; fv.addAllName(formElements[i].name); var vts = validType.split('|'); var ems = errorMsg.split('|'); for (var j=0; j<vts.length; j++) { var curValidType = vts[j]; var curErrorMsg = ems[j]; switch (curValidType) { case 'isNumber': case 'isEmail': case 'isPhone': case 'isMobile': case 'isIdCard': case 'isMoney': case 'isZip': case 'isQQ': case 'isInt': case 'isEnglish': case 'isChinese': case 'isUrl': case 'isDate': case 'isTime': fv.checkReg(formElements[i],RegExps[curValidType],curErrorMsg); break; case 'regexp': fv.checkReg(formElements[i],new RegExp(formElements[i].getAttribute('regexp'),"g"),curErrorMsg); break; case 'custom': if (!eval(formElements[i].getAttribute('custom')+'(formElements[i],formElements)')) { fv.addErrorMsg(formElements[i].name,curErrorMsg); } break; default : if (!eval('fv.'+curValidType+'(formElements[i],formElements)')) { fv.addErrorMsg(formElements[i].name,curErrorMsg); } break; } } } return fv.passed();
}
String.prototype.trim = function() { return this.replace(/^\s*|\s*$/g, "");
}
var RegExps = function(){};
RegExps.isNumber = /^[-\+]?\d+(\.\d+)?$/;
RegExps.isEmail = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/;
RegExps.isPhone = /^(($\d{2,3}$)|(\d{3}\-))?($0\d{2,3}$|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$/;
RegExps.isMobile = /^(($\d{2,3}$)|(\d{3}\-))?13\d{9}$/;
RegExps.isIdCard = /(^\d{15}$)|(^\d{17}[0-9Xx]$)/;
RegExps.isMoney = /^\d+(\.\d+)?$/;
RegExps.isZip = /^[1-9]\d{5}$/;
RegExps.isQQ = /^[1-9]\d{4,10}$/;
RegExps.isInt = /^[-\+]?\d+$/;
RegExps.isEnglish = /^[A-Za-z]+$/;
RegExps.isChinese = /^[\u0391-\uFFE5]+$/;
RegExps.isUrl = /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/;
RegExps.isDate = /^\d{4}-\d{1,2}-\d{1,2}$/;
RegExps.isTime = /^\d{4}-\d{1,2}-\d{1,2}\s\d{1,2}:\d{1,2}:\d{1,2}$/;
</script>
<script type="text/javascript">
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
oldonload();
func();
}
}
}
function prepareInputsForHints() { var inputs = document.getElementsByTagName("input"); for (var i=0; i<inputs.length; i++){ // test to see if the hint span exists first if (inputs[i].parentNode.getElementsByTagName("span")[0]) { // the span exists! on focus, show the hint inputs[i].onfocus = function () { this.parentNode.getElementsByTagName("span")[0].style.display = "inline"; } // when the cursor moves away from the field, hide the hint inputs[i].onblur = function () { this.parentNode.getElementsByTagName("span")[0].style.display = "none"; } } } // repeat the same tests as above for selects var selects = document.getElementsByTagName("select"); for (var k=0; k<selects.length; k++){ if (selects[k].parentNode.getElementsByTagName("span")[0]) { selects[k].onfocus = function () { this.parentNode.getElementsByTagName("span")[0].style.display = "inline"; } selects[k].onblur = function () { this.parentNode.getElementsByTagName("span")[0].style.display = "none"; } } }
}
addLoadEvent(prepareInputsForHints);
</script>
<script type="text/javascript">
FormValid.showError = function(errMsg,errName) { for (key in FormValid.allName) { document.getElementById('errMsg_'+FormValid.allName[key]).innerHTML = ''; } for (key in errMsg) { document.getElementById('errMsg_'+errName[key]).innerHTML = errMsg[key]; }
}
</script>
</head>
<body>
<h1>表单验证提示效果</h1>
<form action="" method="post" onsubmit="return validator(this)">
<dl> <dt><label for="name">帐号:</label></dt> <dd><input name="name" id="name"type="text" valid="required" errmsg="用户名不能为空!" /> <span class="hint" id="errMsg_name">注册帐号（只支持数字和字母,如:love,love520）<span class="hint-pointer"></span></span> </dd> <dt><label for="password">密码：</label></dt> <dd><input name="password" id="password" type="password" valid="required" errmsg="密码不能为空!" /> <span class="hint" id="errMsg_password">请输入密码,请最少输入最少6位最多12位密码<span class="hint-pointer"> </span></span> </dd> <dt><label for="password2">确认密码：</label></dt> <dd> <input name="password2" id="password2"　type="text" type="password" valid="eqaul" eqaulName="password" errmsg="两次密码不同!" /> <span class="hint" id="errMsg_password2">请再输入一次上面的密码<span class="hint-pointer"></span></span> </dd> <dt><label for="email">邮箱:</label></dt> <dd><input name="email" id="email"type="text" valid="required|isEmail" errmsg="Email不能为空|Email格式不对!"/> <span class="hint" id="errMsg_email">请输入邮箱(Email),推荐使用网易邮箱@163.com<span class="hint-pointer"></span></span> </dd> <dt><label for="year">生日:</label></dt> <dd><select id="year" name="year"> <option value="1983">1983</option> <option value="1984">1984</option> <option value="1985">1985</option> </select>年<select name="m" id="m"> <option value="5">5</option> <option value="6">6</option> <option value="7">7</option> <option value="12">12</option>
</select>月<select name="d" id="d"> <option value="5">5</option> <option value="6">6</option> <option value="7">7</option> <option value="12">12</option>
</select>日<span class="hint">请输入你的生日<span class="hint-pointer"></span></span> </dd> <dt><label for="qq">QQ/MSN:</label></dt> <dd><input name="qq" id="qq" type="text" valid="required" errmsg="没有填写QQ或MSN"/> <span class="hint" id="errMsg_qq">请输入你的QQ或MSN号码<span class="hint-pointer"></span></span> </dd> <dt><label for="tel">电话:</label></dt> <dd><input name="tel" id="tel" type="text" valid="required|isMobile" errmsg="手机不能为空|手机格式不对!" /> <span class="hint" id="errMsg_tel">请输入你的电话<span class="hint-pointer"></span></span> </dd> <dt class="button"></dt> <dd class="button"><input type="submit" name="Submit" value=" 提 交 " class="button2"/></dd>
</dl>
</form>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

JavaScript 表格高亮类的应用[高级] CSS 直方图布局示例

Javascript 中的 实用的JS表单验证提示效果

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Javascript 中的实用的JS表单验证提示效果