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var rules = {
isFilled:function(validate里提供的参数,可有可无){return function(由后面程序中传递进来的参数$value){return $value.replace(/\s/g,"").length>0&&$value!=validate里提供的参数}}
}
<input type="text" validate="isFilled" msg="本项目必须填写!">
<script type="text/javascript">
var nameSpace = {
checkForm:function(dForm){
if(!dForm) return false;
var rules = {
isFilled:function(s){return function($value){return $value.replace(/\s/g,"").length>0&&$value!=s}},
isNaN:function(){return function($value){return isNaN($value)}},
isNumber:function(){return function($value){return !isNaN($value)}},
isInt:function(){return function($value){return parseInt($value)==$value}},
isEmail:function(){return function($value){return /^\w+@\w+(?:\.\w+)+$/i.test($value)}},
fileType:function(list){return function($value){var r = new RegExp('\.(?:'+list+')$','i');return r.test($value)}},
moreThan:function(n){return function($value){return $value>n}},
lessThan:function(n){return function($value){return $value<n}},
equalTo:function(n){return function($value){return $value==n}},
maxLength:function(n){return function($value){return !($value.length>n)}},
minLength:function(n){return function($value){return !($value.length<n)}}
}
var chkInput = function(dObj){
for(var i=0,l=dObj.length;i<l;i++){
var dT = dObj[i];
var vr = dT.getAttribute('validate');//validate property
var vm = dT.getAttribute('msg');//msg property
var $value = dT.value;//value
if(vr){
vr = vr.split(';'),vm = vm.split(';');
for(var n=0;n<vr.length;n++){
var avr = vr[n].match(/^(\w+)\(([^\)]*)\)$/i);//match the validate string look like 'fooName(xxx)'
var avrName = avr?avr[1]:vr[n];//fooName
var avrArgs = avr?avr[2]:null;//xxx
var msg = vm[n]?vm[n]:vm[vm.length-1];//alert message
var EVR = (rules[avrName])?rules[avrName](avrArgs)($value):false;
if(!EVR){
alert(msg);
dT.focus();
return false;
}
}
}
}
return true;
}
return chkInput(dForm.elements);
}
}
</script>