一些不错的JS自定义函数第1/2页

function isNumber(st)
{
var Letters = "1234567890-.";
var i;
var c;
if(st.charAt( 0 )=='.')
return false;
if(st.charAt( 0 )=='-'&&st.charAt( 1 )=='.')
return false;
if( st.charAt( st.length - 1 ) == '-' )
return false;
for( i = 0; i {
c = st.charAt( i );
if (Letters.indexOf( c ) <0)
return false;
}
return true;
}

function createCOOKIE(name,value,days){
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
expires = "; expires="+date.toGMTString();
};
document.COOKIE = name+"="+value+expires+"; path=/";
};

function readCOOKIE(name){
var nameEQ = name + "=";
var ca = document.COOKIE.split(';');
for(var i=0;i var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
};
return null;
};

function request(st) {
var ustr=document.location.search;
var intPos = ustr.indexOf("?");
var strRight = ustr.substr(intPos + 1);
var arrTmp = strRight.split("%26");
for(var i = 0; i {
var arrTemp = arrTmp[i].split("=");
if(arrTemp[0].toUpperCase() == st.toUpperCase()) return arrTemp[1];
}
return "";
}

function hideObject(obj) {
obj.style.display = "none";
}

function showObject(obj) {
obj.style.display = "block";
}