一个实用的JS表单验证提示效果_表单按钮特效

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(http://www.mb5u.com/jscss/demoimg/200911/pointer.gif) no-repeat -10px 5px;
}

.hint .hint-pointer {
    position: absolute;
    left: -10px;
    top: 5px;
    width: 10px;
    height: 19px;
    background: url(http://www.mb5u.com/jscss/demoimg/200911/pointer.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);

</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>
 </p>
</body>
</html>

所属频道：表单按钮特效/更新时间：2012-11-21

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