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javascript ÑéÖ¤´úÂëÕûÀí

//the common event,If your brower is firefox,you should use this function instead of "window.event"
function getEvent() {
if(document.all)
return window.event; //get ie event
func=getEvent.caller;
while(func!=null) {
var arg0=func.arguments[0];//alert(arg0);
if(arg0) {
if((arg0.constructor==Event || arg0.constructor ==MouseEvent) || (typeof(arg0)=="object" && arg0.preventDefault && arg0.stopPropagation)) {
return arg0;
}
}
func=func.caller;
}
return null;
}
//È¥³ý×ó²à¿Õ¸ñ
function LTrim(str)
{
return str.replace(/^\s*/g,"");
}

//È¥ÓÒ¿Õ¸ñ
function RTrim(str)
{
return str.replace(/\s*$/g,"");
}

//È¥µô×Ö·û´®Á½¶ËµÄ¿Õ¸ñ
function trim(str)
{
return str.replace(/(^\s*)|(\s*$)/g, "");
}

//È¥³ý×Ö·û´®Öмä¿Õ¸ñ
function CTim(str)
{
return str.replace(/\s/g,'');
}

//ÊÇ·ñΪÓÉÊý×Ö×é³ÉµÄ×Ö·û´®
function is_digitals(str)
{
var reg=/^[0-9]*$/;//Æ¥ÅäÕûÊý
return reg.test(str);
}

//ÑéÖ¤ÊÇ·ñΪÕûÊý£¬°üÀ¨Õý¸ºÊý£»
function Is_Int(str)
{
var reg=/^(-|\+)?\d+$/;
return reg.test(str);
}

//ÊÇ´óÓÚ0µÄÕûÊý
function Is_positive_num(str)
{
var reg=/^\d+$/;
return reg.test(str);
}

//¸ºÕûÊýµÄÑéÖ¤
function Is_minus(str)
{
var reg=/^-\d+$/;
return reg.test(str);
}

//ÑéÖ


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