Js 数据验证

$.fn.extend({
isObj: function (str) {
if (str == null || typeof (str) == 'undefined')
return false;
return true;
},
strTrim: function (str) {
if (!isObj(str))
return "";
str = str.replace(/^\s+|\s+$/g, '');
return str;
},
isNaN: function (str) {
return $.fn.strTrim(str).length > 0;
},
isGuidNaN: function (value) {
return value == "00000000-0000-0000-0000-000000000000";
},
isMobile: function (value) {
if (!(/^1[3|4|5|7|8]\d{9}$/.test(value))) {
return false;
}
return true;
},
isTel: function (value) {
var pattern = /^((0\d{2,3})-)(\d{7,8})(-(\d{3,}))?$/;
return pattern.test(value);
},
isDecimal: function (str) {
return (/^(([1-9]\d*)|\d)(\.\d{1,3})?$/).test(str.toString());
},
isInt: function (val) {
return (/^[0-9]\d*$/).test(strTrim(val.toString()));
},
getUrlParms: function (paras) {
var url = location.href;
var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
var paraObj = {}
for (i = 0; j = paraString[i]; i++) {
paraObj[j.substring(0, j.indexOf("=")).toLowerCase()] = j.substring(j.indexOf("=") + 1, j.length);
}
var returnValue = paraObj[paras.toLowerCase()];
if (typeof (returnValue) == "undefined") {
return "";
} else {
if (returnValue.indexOf("#") != -1) {
returnValue = returnValue.substr(0, returnValue.indexOf("#"))
}
return returnValue;
}
},
changeTwoDecimal: function (x) {
if (isNaN(x)) {
return 0.00;
}

var f_x = parseFloat(x);
if (isNaN(f_x)) {
alert('function:changeTwoDecimal->parameter error');
return false;
}
var f_x = Math.round(x * 100) / 100;
var s_x = f_x.toString();
var pos_decimal = s_x.indexOf('.');
if (pos_decimal < 0) {
pos_decimal = s_x.length;
s_x += '.';
}
while (s_x.length <= pos_decimal + 2) {
s_x += '0';
}
return s_x;
}
});