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一个非常强大完整的web表单验证程序(3)
作者:佚名 来源:闪吧 整理日期:2007-5-1

var span = document.createElement("SPAN");

span.id = "__ErrorMessagePanel";

span.style.color = "red";

this.ErrorItem[i].parentNode.appendChild(span);

span.innerHTML = this.ErrorMessage[i].replace(/\d+:/,"*");

}

catch(e){alert(e.description);}

}

this.ErrorItem[1].focus();

break;

default :

alert(this.ErrorMessage.join("\n"));

break;

}

return false;

}

return true;

},

limit : function(len,min, max){

min = min || 0;

max = max || Number.MAX_VALUE;

return min <= len && len <= max;

},

LenB : function(str){

return str.replace(/[^\x00-\xff]/g,"**").length;

},

ClearState : function(elem){

with(elem){

if(style.color == "red")

style.color = "";

var lastNode = parentNode.childNodes[parentNode.childNodes.length-1];

if(lastNode.id == "__ErrorMessagePanel")

parentNode.removeChild(lastNode);

}

},

AddError : function(index, str){

this.ErrorItem[this.ErrorItem.length] = this.ErrorItem[0].elements[index];

this.ErrorMessage[this.ErrorMessage.length] = this.ErrorMessage.length + ":"
+ str;

},

Exec : function(op, reg){

return new RegExp(reg,"g").test(op);

},

compare : function(op1,operator,op2){

switch (operator) {

case "NotEqual":

return (op1 != op2);

case "GreaterThan":

return (op1 > op2);

case "GreaterThanEqual":

return (op1 >= op2);

case "LessThan":

return (op1 < op2);

case "LessThanEqual":

return (op1 <= op2);

default:

return (op1 == op2);

}

},

MustChecked : function(name, min, max){

var groups = document.getElementsByName(name);

var hasChecked = 0;

min = min || 1;

max = max || groups.length;

for(var i=groups.length-1;i>=0;i--)

if(groups[i].checked) hasChecked++;

return min <= hasChecked && hasChecked <= max;

},

IsDate : function(op, formatString){

formatString = formatString || "ymd";

var m, year, month, day;

switch(formatString){

case "ymd" :

m = op.match(new RegExp("^\\s*((\\d{4})|(\\d{2}))([-./])(\\d{1,2})\\4(\\d{1,2})\\s*$"));

if(m == null ) return false;

day = m[6];

month = m[5]--;

year = (m[2].length == 4) ? m[2] : GetFullYear(parseInt(m[3], 10));

break;

case "dmy" :

m = op.match(new RegExp("^\\s*(\\d{1,2})([-./])(\\d{1,2})\\2((\\d{4})|(\\d{2}))\\s*$"));

if(m == null ) return false;

day = m[1];

month = m[3]--;

year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10));

break;

default :

break;

}

var date = new Date(year, month, day);

return (typeof(date) == "object" && year == date.getFullYear()
&& month == date.getMonth() && day == date.getDate());

function GetFullYear(y){return ((y<30 ? "20" : "19") +
y)|0;}

}

}

</script>
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